8/12/2019 Gun Drill 18lb QF Gun Mark IV Carriages Mark V http://slidepdf.com/reader/full/gun-drill-18lb-qf-gun-mark-iv-carriages-mark-v 1/88 {fs.~ued w~t/~ rm~, Ord~r.~ or April, 924 [Urow~ Copyright Itr~er~ed U 8 GUN DRILL PoI~ 18~FoullUer OF. un Mark IV, CARRIAGE, MARK V. 1924 ~ FUHLI~flED flT Wa MAJEST~ 8TtT~ON1I1lr OPF1C1~. To1,. prirchoura dtrrcUy from R.M,~TATION~IVt oFi’fCJ~ gtbo following jn,,ls imporiol hone Xi swoy, Løndon. W,t~. ~ ~8, A bir~pdou ~trnet. Loi~doo~ W. k york S~ro ~ ionohp rerI Si Abdrew’ Orn n ~;C rdUf; iou, Oerrpo ~trrE J~thburgi~ ortinuogi~ ~ny flokael~nr. 1U~4 Price 3d. Nets
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8/12/2019 Gun Drill 18lb QF Gun Mark IV Carriages Mark V
iii. The extent of tho zone.iv. The shortest range at which the battery is likely to
fire.
2. He selectsand establishes the command post.This should be so situated—1 . That th~G.P.O. can see and control all guns from it.
ii. That as far as possible) his orders can beheardby allS.Cs. and Nos. 1. (It will usually be best situatedon the windwardflank.)
iii. That guns andwagonsdriving on to theposition shallnot drive over the telephone line to the observa-tion post O.P. .
3. He is responsiblei. For the selection of the aiming point when required)
and for pointing this out to the S.Cs. over hisdirectoror a dial sight.
ii. That the line of fire of the pivot gun is laid out asordered by the B.C.
iii. That the lines of the remaining guns are laid out
parallel to that of thepivotgun.4. When the map co-ordinate method (Artillery Training,Vol. II, 1923, See. 50, 4 (iii) and 6 of giving his initial ordersis employed by the B.C., the G.P.O. will make the necessarycalculations and correctionsand report theresult to the O.P.
~. Ho is responsible for the recording of zero lines in thebattery. After giving the original line of fire to the guns hewill order “Record as Zero Lines.”
These records will then stand unless a subsequent order to“Record as Zero Lines” is received.6 . When for any special reason, such as
i. restricted position,ii. close country, oriii, the tactical situation,
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it is necessary for any of the following means of laying fromround to round to be recorded at, or employed by, the guns;howiU:—
a arrange for planting t i m e battery picket, whichhe willsubsequently indicate to the S.Cs.,
or b) order theplantingof aiming posts,or (a) order paralleloscopcs to ho set up.
7 . When ordered by the B.C. to do so, or when from thenature of the position or the tactical situation it appearsnecessary, he will calculate and report the lowest quadrantelevation at which the guns can clear the crest, not onlyimmediately in front but also as far to each flank as ho hasreason to believe that the guns will have to fire. lie willbase his calculation of this quadrant elevation on the largest
crest angle reported from theguns, to whichangle ho will addthe elevation duo to the range to t i m e crest plus the safetyallowance requirod when firing over our own troops. SeeSec. 49, p. 2, ArtilleryTraining, Vol. II, 1923).
8 . When necessary, owing toi. the irregularplacingof t i m e guns,
or ii. a large switchbeingordered,
lie will:—
a report thegun intervals to the O.P. b) calculate and orderany position corrections.(a) construct a concentration table.~
9.—i. Ho is responsible for passing to the battery theorders received from the 0.1’.
ii. He will issue, in theircorrect position in thesequence,any orders which may have been omitted by theB.C. , owing to the use of standard orders.
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iii. He will query any- order which appears to him to contain any verbal slip, error or unintentional
omission.
10. Ho will control tho battery in action, ensuring that itsfire discipline is maintained. lie will only report suchinformation to the O.P. as may be necessary to enable theB.C. to observeand correct the fire of individual guns. SeeSee. 49, 2, also ArtilleryTraining, Vol . II, 1923).
11. When the order “parallel lines” to a imamed gun isreceived ho will pass thisorder to t i m e battery, adding the drillinetimod by whichit is to be carried out. The method selectedshould be the most convenient and ~ceurate, having regard
to t i m e reliability of the laying out and recording of the zerolines.
12. When elinometerlaying is ordered, or becomes necessaryowingto acasualty to t i m e sights, I m e will calculatethequadrantelevations and order them to thegun or guns concerned.
13. Ho will maintaiui at the command post any records ofregistrations that may ho ordered by the B.C. (For t i m e
purposes of this record information received from section
commanderswill be reduced to normalconditions.)14. Whenever the B.C. is himself commanding from in or
near t i m e battery position i.e., by voice control), ho will assistthe B.C. by passing orders, watching for acknowledgmentsand otherwiseas may be ordered at the time.
DUTIES O~SECTION COMMANDER.
No~na—Onservice i~ma~jnot always be possible for section
commanders to be with their sections in action, and it rmioy lieinadvisable to withdraw a No. 1 from his gun to act as seclien
commander. In this case such of the following duties as effect
both guns will be performed by the G.P.O., and such as effect
individual guns by the Non 1.
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1. He COMMANDS his section and is responsible for tiioserviceability of its EQUIPMENT and the correctness of its
drill.
2. On coming into action lie will ascertain from the G.P.O.the aiming point and indicate it to his Nos. 1. This is best
done by calling them to a gun of the sectioim and turning t i m e
dial sight on to theaiming point, lie places himself whereliecan best see and hear the B.C. or G.P.O. and will only moveabout whoa necessary for the supervision of his section, Inordinary circumstances he should be on the flank of hi~
section nearest the commandpost.
3. He will acknowledge orders from t i m e command post bysaluting with the hand nearest t i m e G.P.O., finishing with t i m e
hand vertically above the head.Ho oniy passes ORDERS when he sees that his Nos. 1 or
the neighbouring S.C. have failed to acknowledge .
4. lie keeps a permanent record of such of t i m e following asare necessary for the guns of his section. MUZZLEVELOCITY, DROOP, JtJMI’, GUN CORRECTIONS and
FUZE CORRECTIONS.He supervises the TESTING and ADJUSTMENT of t i m e
sights of his section. See Chap. IV.
5 . When in action he takes a note of the ZERO LINERECORDS of his guns but will not keepany record of ordersduringa shoot.
6 . He reports the CREST ANGLES t.o the G.P.O. whenordered to do so.
7. Ho is RESPONSIBLE that, before fire is opened onanytarget,his guns arelaycd in theDIRECTIONORDERED.
Linesmay be checked by any of the following means
i. Comparing the line of I m i s guns with the flank gun ofthe neighbouring section by looking along eachgun with reference to sonme distant object in front.
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ii. Measuring the switch of each gun from its aiming
posts or some known point in front.iii. Taking bearings of the axis of each gun with a pius.
matie compass.
8. He CONTROLS his section in action.This control is best carried out by watching and listening
rather than by personal inspection of sights, etc., e.g., asregards deflection corrections, observation of which hand isused by 3 will provide a check that deflections arebeingputon in the correctdirection; as regardsfuzosetting, comparison
of the fuze lengths called outwill exposeany considerable error.9. When his section is RANGING, if for any reason one
gun is not ready, ho will fire BOTHELEVATIONS from t i m eother gun, thehigher elevation first, reporting the fact to the
G.P.O.10. At BATTERY FIRE ho will report to the G.P.O. when ‘
one of his guns MISSES ITS TURN.
11. Ho will REPORT to the G.P.O. when either of his gunsgoes OUT OF ACTION or when lie finds that an ERROR
has been made which is likely to have AFFECTED THE
SHOOTING.12. If PARALLELLINES to a gun ofhis section is ordered,
he will calculateandgive the line of firo to theremaining gunsof the battery, using the drill method ordered by the G.P.O.
DUTIES OF 1.1. He COMMANDS and is responsiblefor theentire service
of his gun.
2. Ho gives the WORDS OF COMMAND detailed for himin Chapter II, and repeats all ORDERS affectinghis detach.
ment which imave not been heardby the men concerned. Hisorders must be given clearly, but no louder than is necessaryto enable hij~detachment to hear.
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• lie assists in passing orders down the battery when neces-sary.
He acknowledges all orders by saluting. Ho will salute
with the hand nearest the G.P.O., finishing with tho hand• vertically above the head.3. He is responsible for ensuring:—
i. That the BUFFER is properly filled. He sees thatthero is oil in t i m e tankandthat the isolating valveis open.
ii. That the I4ECUPERATOR is correctly charged withliquid and air. Ho sees that the tail rod is flush
with therear end of theslot in theprojection of thecradle cap.
iii. That the GLANDS, NUTS SECURING PISTON
RODS, andCUT-OFF GEAR are correct,iv. That the PROTUSION of the STRIKER is correct.v, That the SIGHTS are tested; this is done under tho
supervision of the S.C.vi. That theMUZZLE VELOCITYof thegun is correctly
set on the range gear and fuze indicators.
4. He selects the GUN PLATFORM. A good platform isone that provides firm and level ground for the wheels and asufficiency of firm ground into which the spadeswill bed andhold. If a level platform cannot be found and time permits,
thehigher wheel is dug in.5. On coming into action ho mans the RIGHT GUN
WHEEL. When manning wheels , the spokes should begrasped as near the felloes as possible.6 . He attends to the CRADLE CLAMPING GEAR, opens
theRIGHTTRAIL andattends to theRIGHTREMOVABLESPADE.
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• 7 . lIe ascertains, when ordered, the CREST ANGLE andreports it to the S.C.
8 . He selects the auxiliary aiming point and enters on the
recording plate tho ZERO LINE RECORDS.9. When the LIN’E OF FIRE to a NEW TARGET is
ordered, he gauges the new line so that when thegun is layedhe can be certain that it is pointing in the DIRECTiON
ORDERED.If the line ordered is outside t i m e LIMIT OF TRAVERSE,
he superintends themovement of thetrails.In traversing the gun by means of the trails, a movement
of both trails of one yard in t i m e same directioncorresponds to10 degrees of traverse, e.g. :—for a movementof 20 degrees tothe right, the right trail is moved inwards two yards, thelefttrail is carried outwards and thewheels manned until furthermovement is stopped by t i m e right trail.
10.Ti. Ho applies
a The POSITION CORRECTION which, if
required, is ordered in the form“POSITION CORRECTION No.... plus or
• minus ... (yards),” and is applied to allelevations ordered, but is cancelled by afresh target beingordered.
b) Corrections during fire for effect, which areordered in the form
“No.... add or drop ... (yards).” These arecancelled by a fresh elevation being
ordered.
ii. When laying by field -chinomctcr, ho applies theINDEX CORRECTION if any) of his elinometer,and passes corrected elevationsto 2.
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iii. \Vhen time fuzes are issued for which there is nofuze indicator, 1 . will be provided with a fuzocorrectionboard on whichwill be shown correctionsto fuzo lengths required for gain or loss of t i m e
muzzle velocity of thegun.
11. When an anglo of sight is ordered, he examines timsettings of the SIGHT CLINOMETER. lie occasionallyexamines the settings of t i m e RANGE GEAR and FUZE
~ INDICATORS, and DIAL SIGHT.~‘ 12. Ho supervises the preparation and suppiy of AMNUNI-~ ‘ TION. As time fuzes deteriorate rapidly if unprotected from
~ damp, only s u c i m as arc required for immediate use will be0 uncovered. When one group of ammunition is nearly cx-~ pondcd, ho reports particulars of time next group to be used.~ 13. lIe supervises LOADING.~ lie sees that t i m e , caps of No. 106 fuzes havebeen removed
~ and occasionallyexamines thesetting of time fuzes.~ 14. He gives t i m e order to FIRE. The gun will on no~ account be fired witimout his order, Before giving this order
I m e sees that time gun is in all respects ready, and that tliedetachment is clear of therecoil.
‘15. lie is responsible that t i m e INTERVAL between roundsis properly kept as regards i m i s own gun. When a salvo orquick rate of battery fire (less than 5 seconds interval) isordered, im e extends his right arm above i m i s head as soon asi m i s gun is ready to fire.
16 . If the firing lever on the carriage hasbeen damaged,
im efires
timegun by meansof t i m e LANYARD attached to thetrigger. At “OPEN SIGHTS” or “INDIRECT BY
TRAVERSE,” he fires t i m e gun by means of the lanyardwimich will be attached to t i m e lmandlo of the firing lever bya clove hitch; he gives t i m e order to FIRE as awarning to thedetachment.
ii 27—83)T A 3
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17 . At intervals im e checks t i m e LENG’I’H OF RECOIL.He coimmpares time elevation given by time recoil indicator withthe elevation on the olevation aresituated below the sights.
18 . If t i m e run-out duringthelast low inches is ei t imer sluggish
or violent, li e adjusts t i m e VALVE, ADJUSTING RUN-OUT.19. lie watches the action of t i m e SPADES on recoil, afl(l,
wlmcn necessary, to increase th~steadiness of time carriage,
im e adjusts their supportsor, assisted by 4,drives in t i m e remov-able spades. Tho best results areusually obtained when tIme
removable spades arc driveim in after time pcrmaimcnt spadeshave been bedded. Before driving in time removable spades
im e must remove the securing key. When withdrawing timo
removable ~i~ades, im e depresses the catclm retaimmimig withlus foot and pulls time spade t- imrough time trail into the tra-velling position and secures it by inserting the securing key.
20. Wheim firing at high angles of elevation, ho sees thatTHE BREECH will not foul the ground on recoil, orderinga hole to be dug if necessary. Jf timis is not done, serious
damage may result.
21. Wlmen RAPID or PROLONGED FIRING takes
place, ho takes every opportumiity of attendingto his
equip-m e m m t . If t i m e g m m n is imot, the bore should ho cooled witim
water wheim “ Stand easy” is ordered.
DUTIES OF 2.I. He LIMBERS UP and UNLIMBERS in conjunction
with 3 and attends to the SHIELD, BRAKE, RANGEGEAR INDICATOR, BREECH MECHANiSM and breecimamid
muzzle COVERS.2. He attends to the BRAKE during travelling. Ho
puts on the brake in actioim. \Vheim in actionor on time road, im omust be careful not to apply the brake too hard.
3. J im aetion im o mans the right GUN-WHEEL, if ordered.
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4. Wiien t i m e trails are being moved in action and theainming point is to t i m e leftor rear, lie assists I to traverse thegun into t i m e direction ordered by laying on t-o the aiimiing
point over the FLNI)ER of tue i)IAL SIGHT and mhrectmng5 and 6 to move the trails by signalling with the paint bft i m e hand.
I S . lie set-s the RANGE GEAR INDICATOR at the ele-vation ordered by I, depressing last, closes the breech, removes
his imand from t i m e elevating hand-whee l , and reports “ Setl e m m d enough for I and 3 to hear.
6. Wlmen laying by FIELD CLINOMETER lie sets it at
time elevation ordered by I, and lays for elevation by elevatingthe gun until the bubble of time field clinometer runs to the
front and then depressing until the bubble is in the centreof it-s run. He sees that the c l i m m o n m e t e r plane and the baseof time elitmometer are free from grit or dirt, a i m c i that time
clinomet-er is piaced o m m the positioning marks of the planefor eacim lay.
7 . TO OPEN THE BREECH.—He seizes t i m e breecimmechanism lever with time right hand as time gun runs out
and draws it towards him, thus opening the breech andejecting the cartridge case. Ho tlmen holds the lever atright angles to t i m e gun with his left hand, so that neitherthe breech block nor time extractor will interfere with loading.
If the gun hasnot been fired he pushes the imang-fire latchforward to unlock t i m e breech before opening it.
8. TO CLOSE THE BREECH.—--l-Ie closes the breechwith his left imand. He must not slam the breech, and lie
should keep his imand on the lever throughout its wholemovement. If thmcre is difficulty in closing the breccim,I m o will emideavour to press the round home by grasping t i m e
lever with botim imaiids and exciting time whole weight of hisbody upon it. Ho must on no account use the breech screw
as a hamnuer to drive time cartridge home.
a 27—83)T A 4
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DUTIES OF 1. lIe LIMBERS UP and UNLIMBERS withi 2. lIe
LAYS a m i d is responsiblefor t i m e SIGHT COVER, lie FIRESt i m e gun except when “ OPEN SIGhTS” or “INDiRECTBY TRAVERSE” has b e e m m ordered. Ho directs 4 whenplantingAIMING I’OSTS. lIe assists I to test theSIGHTS.
2.—i. lie LAYS FOR LINE and with 2 lays for ELEVA-TION. He lays for line 0 m m f-lie left edge of the
aiming poit unless otherwise ordered.
ii. At INDIRECT LAYING with SIGHT CL1NO-
METER, lie sot-s the dial sight and sight clino-met-er at time angles ordered. He elevates time
gun until the bubble of the s i g i m t clinon’mctcrruns to the front and depresses until t i m e bubble
is nearly central. lie lays roughly for line.
WT
imcn 2 has reported “Set” lie cross-levels
the sight amid laysaccurately for line. Ho depresses
the gun until the bubble of time sigimt chinometer
is central and report -s “ Ready.”iii. At INDIRECT LAYING wit-hi FIELD CLINO.
METER, he sets time dial sight and sight chino-meter at t i m e angles ordered. Ho elevates andthen depresses the g u m m until the bubble of thesight clinometer is in time centre of its roil, lielays roughly for line. Wheim 2 imas reported” Set,”
ho cross-levels t i m e sight, lays accurately forline a m m d reports “Ready.”
iv. At DIRECT LAYING, lie sets t h m e open sight atthe deflection ordered. He lays for line and
elevation. After 2 has reported “ Set “ he cross-levels, chocks his lay and reports “ Ready.”
If ordered to take the anglo of sighit, lie cheekshis lay and levels the sight climmometer by the
micrometer head.
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v. At INDIRECTBY TRAVERSE, im e lays INDIRECTby SIGHT CLINOMETER, but after tue firstround is fired lie takes up all orders for LINE
on t i m e traversing gear.vi. W l m c m i LAYING for ELEVATION ho depresses
last top of t i m e imand-wheel to the front) with at
least o m m o comnpictc turn of t i m e hand-whee l .vii. T i m e normalposition of his HANDS is as follows
Right l i a m m d cii time traversing imand-wlmeelheft hand on t i m e elevating hand-whee l .
4. To use the TRAVERSING GEAR to time best advantage
the ZERO line should be layed out with ZERO traverse.When time doesnot p e r i m m i t - of this thesetting of the traversing
gear shonid he as near ZERO as possible. After the spadesare embedded , the trails will m m o t be moved so long as the
line is w i t h m i i m the scope of the traversimmg gear.
5. CROSSHEADS are fit-ted t-o a i m n i m m g posts to compensatefor laterah movenment of time sight-. Ilotim crossheads haves i m n i h n m r markings amid numbers. I-fe notes wimicim corres-pond’mng pair of markings are in line and uses them to lay
on. lie direet~4 to clamp crossheads low do*n, so that t i m e
bottom of time far one is just visible over the top of t i m e nearone.
6. At a CHANGE OF TARGET if time angie is given asnmore right or left ,” I m o turns t i m e micrometer iieads of t h m o
dial sight thmrough t i m e angle ordered. If t i m e angle is giveimfrom zero line, im e sets tlmo dial sight at time recorded zero
line angle and then turns the micronmeter heads of tine dial
siglmt through time angle ordered.7. I-fe fires thegun. As s O O i m astine gum is layed lie removes
his left Imand from time ‘elevating imanid-wheci , places his r igimthand on time firing lever and reports “ Ready.” At time
0 1 1 C m “ Fire“ lie pulls t i m e lever smartly, releases it at once
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wimen opportunity offers, time burrswill he reniovedummdcr instructiomms from I.
iv. Timey will put on o m i e side all cracked or dented
cartridge cases and rounds witim time wire or seal
of No. 106 fuze broken, reporting particulars
to I to enable him to return the rounds.v. Is SORTEI) into groups by nature amid fuze.
vi. Is i’ROTECTEI) fronm extrenmes of temperature rind
from damp.
vii. Is ISSUED from time group ordered.
4. W i m e m m preparing ammurmit - ion with No. 106 FIJZE t imeyremove time cartridge clips. No safety cap is to ho removed
from a No. 100 fuze, or time wire orseal broken tint-il time roummd
is about to ho loaded. On removing time cap they exanmilme
each f m u z e to see that time tape is corm’ectiy wound amid that time
ends of time shearing wire are visible. If a No. 106 fuzo has
become rmmmcapped or time wire amid seal is fouumd to be brokeim,time fuse is to be regarded as dammgerous and treated accord-ingly. A No. 106 fuse wit-hi wire or seal broken is on rioaccount.to be replaced in a l inmber or wagon.
5. W im e im preparimgShRAPNEL tbmey remove time cartridge
chps and fuse covers. 6 follows up all orders for corrector
am-id elevation on time FUZE 1N1 ICATOR, a m i d calls out f-hefuse sett i img loud enough for his section comnmaumder to hear.
lie always uses time reader for followimmg up the elevation, aimd
calls omit time highest fuse setting visible to time left of time edge
of the reader.6. 5 sets fuzes with a fuze key to the settings called by 6.
He follows up time set-flings as they are called, so that lie hasaiwaysaroummid ready to be fired. 6 assists 5 when he is not
using the fuze indicator. They re-set mcii fuse accuratelyat safety before replacinig the round in time wagomi.
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I takes a pace to time ream’ witim his riglmt foot and a paceto t i m e left w i t i m iris heft foot. The left-hand man of t i m e rear
r a m m k takes,a pace to t i m e front. At the samnc timiie time n-c-mainider of t i m e f r o m - i t rank take a pace to t i m e rigimt and t i m erear rank a pace to t i m e left.
(Time detacimment is thmen again told off.)
4. POSITIONS WHEN MOUNTED.
1 . and the coverer on their horses on the left of thu leaders of
time gun and firing battery wagon respectively; 2 and 3 ciithe gun limber; 5 and 6 on time wagon limber; 4 on t i m e
wagon of time firing battery; 7 and 8 on t i m e limber, 9 on the
wagon of time first hue; ], 4, 6 and 8 Oh t i m e near side, 3, 5, 7and 9 on time off.
5. TO MOUNT.
Sect-ion commammder .
“ Detachments, prepare to amount.”
Themen double to thicir places at the carriages and lay i m o l dof t i m e guard irons; 2, 6, 8 and9 with t i m e left hand,3, 4, 5 and7 with t i m e right i m a m i d , each placing a foot on the trail, perchor spoke.
Section commander.
“Mount.”
Thewholespring into t imeir places. The menu on the limbersturn round to time front, lifting their feet close togctimer, amid
throwinmg thorn over t i m e guard irons. They sit upright,
holding time haumdstraps with the inner and the guarni iron with
the outer hand. Thus is time position of attention.
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Time carriage is imalted amid time detachmmucnt r e m m u u i m at their
posts.
Section comnnumundcr.
‘‘ Det-acimnueuuts rear.”
2 and 3 replace time drag-ropes 0 m m time shi~id the d e t - m m e h m m e m m tdouble to their place-s amid ha-it.
9. TO MOVE THE GUN WITHOUT DRAG-ROPES
WHEN LIMBERED UP.
Sect-ion commander.
IVII/uoutdrag-ropes, prepare
t o edt-once.”
I takes post two yards in front of his sub-section.
2 and 3 pusim iii rear of time shield ; 4 and 5 nman the g n uwlmecis; 8 and 9 go to time pole, and time remainder assist-, 6on time lie-ar side, 7 on the off.
Section commmmander.
“ JValk nmarch.”
Time carriage is nmoved to time f r o m m t - .
Section comnmaumder .
“ Hall.”
Time carriage is halted a m i u l the detaeimmneumt renmain at their
posts.
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4 unkeys and Separates the trails.1 a u - i d 4 o p e u m t i m e trails.2 lowers the
shield, raisest i m e upper
shield,opeius the
breech, puts on thebrake and pushes the slipper of t i m e recoilindicatoras far forward as possible.
3 fixes the sight chinonmetcramid dial sight, a m - i d unchanmps the
oscillating bracket of the sight.5 and 6 go to the p c r c h m and 4 to t i m e rigimt wagon wheel.
5 releases time limber hiook catcim and with 6 lifts the perch
clear of the hook .4, 5 and 6 man-imaumdlo the wagon body timrouglm a quarter
circle to the left, 5 and 6 lower the perch to the greumid. 4puts o m m time brake if necessary.
S and 6 lower the shields of time limber and wagon and
prepare ammunition.
6 fixes t i m e fun - c indicator.The detachment take up their position-s in action.
Action right, Action left, Action rear.
At “Action right” the trail is carried round timreugim aquarter of a circle to the left, 2 moving round the trail eye.
At “Action left” the trail is carried round through a
quarter of a circle to t i m e r ig imt , 3 moving round the trail
eye.At “Action Rear” the trail is immediately lowered to the
ground.
W h c m m training detachments in these movements, thedetail given under “Action Front” must be modif iedaccordingly with regard to movement of teams, trail and
t i m e work of 2 and 3.
No ’ rmm.— When coming into action in the open :—~The wagonlimber will normally be sent to the wagon line and the wagon
B 27—83)v A 6
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The G.P.O. adds to the angle reported the elevation duoto range to the crest, pies the allowance for safety see
Sec. 17, Artillery Training, Vol. II, 1923), and reportsthe resultant quadrant angle to the battery commander.
N0TL—Tho S.C. should order the correct angle of sight
for the gun after the crest angle has been taken.
20. TO PLANT AIMING POSTS.
Section commander.
“ Aiming po.its front r rear).
4 doubles out in front (or rear) of his gun with two aiming
posts and plants them as directed by 3 in line with the dial
sight set at zero or (180 degrees). Re plants the near postfirst at about 50 yards from tJm gun. He then plants thefurther post as far from the gun as possible up to about 100yards.
If the order “Replant aiming posts “ is given, 4 doublesout, and, at tho signal from 3, pulls up the posts, the further
one first, and replants them.
21. PARALLEL LINES TO A NAMED GUN.Zero Line Method.
Section commander.
“ Parallel lines to No... Zero tine method.”
3 of the named gun relays for line.
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3 sets time traversing gear at zero, replaces time dial siglmt,
and sight clinonmeter, and clanmps time oscillating bracket of
time sight.
4 brings in a x m d replaces time aiming posts unless otherwiseordered.
5 and 6 re-set time fu~esat safety, replace clips and amunu-
nition aimd close a~lids.6 replaces time fuzo indicator.
3 elevates time gun to stops ; 2 britmgs time guim to time travel-ling position.
I secures t i m e eradlo clamping geitr .
2 with 3 raises and secures the lower shield.2 lowers the upper shield.
4, 5 and 6 litnijer up time wagon, 5 and 6)ift time perch m u m d
carry it tlmrougim a quarter circle to time right and placo itel- i the hook ; 4 mans time left wheel.
37. TO LIMBER UP.
R e a r limberup.
Section eommaumde r .
“ Rear limber up.”
The detachment take post as follows
2 and 3 between breecim and wimecis, I i u m front of 2, 4 infront of 3, kneelingwitim their backs to time axletrce; 5 and 6ready to hook in the wagon team.
The limber approaches from the right; I orders “Hail”
early enough to ensure timat, wimcn imalted, t i m e ofi wheelwill be opp32ito the trail eye ; the limber is halted and
squared.
1 . orders “ Limber up “ ; 2 and 3 lift the trail and piace
it on time hook; I and 4 man time wheels.
5 and 6 hook in the wagon team.
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On disnmountecl parades they f O r n m detacimmeimt rear.
Front limber up.
Section commander.
“Front limber up.”
2 and 3 lift the trail ; 4 mans the left armd 5 time right guru.wimeel ; time gun is run clear of the wagon a m m d time trail iscarried timrough a half circle to the right 2 moving round
the trail) and low-cued to the grommnd. Time detachment take
post.
The limber drives up on time right aimd one yard clear of
the gun. Wiien clear of time gun-wheel, it inclimmes to timeleft until the near wheel of time limber has just passed t i m e
trail eye.
I orders “ Halt,” ; time linmber is halted and squared.
I orders “Limber up” ; 2 and 3 lift the trail at-id placeit on t i m e hook; I and4 m m m i i the wheels.
5 a m - i d 6 imoek i u time wagon team.
The d e t a c i m m e n t m o m u t m t without further orders.
On dismounted parades timey form detachment rear.
Right limber up.
Section commander.
Right limber up.”
Time trail is carried round through a quarter of a circle
to the r igimt. ~T1meprocedure is then as in front l iumther up. *
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The trail is carried round t i m r o u g i m a quart -er of a circleto time left and t i m e limber drives up 0 m m tIme left. (Time pro-cedure is then as in front limber up. *
* Wimen detailing “Right (orLeft) limberup” t i m e instructor
will modify time detail of “Front limber up “ as imecessauy.
38. CASUALTIES TO DETACHMENTS.
Men sent to replace casualties report to their section coin-
m m m a u m d e r s who order such clmangcs of duties as they coumsidertmcccsstmry.
Casualties are replaced as follows :—
Section commander ... By the setmior No. I of the
section.
By a tmanmcd successor.
5 perfornms time duties of 5 mmd 6.
I performu-is the duties of I and 2.
2 perforumis the druties of 5and 6.
I performs t i m e duties of I a m m d 2,
and calls out -the leumgth of
fuze from time fuze itmdicater
on time slmield. 2 performs
time duties of 4, 5 and 6.
39. CASUALTIES TO EQUIPMENT.i. Breech mechanism.
If t i m e breech will not open, see that—(a) Time Imang-fi re hat-oh is forward.
b) The trigger has resumed its norumal position.
c) Tue guide Ior mainspring is flush with time lace of
the breech.
IWith five m e u m
\Vitim four men
\Vitim three men
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about 80 degrees, imaving first secured a dragrope witlm whichto ha’alit down. Secure time axle to t i m e limber imoek by meansof a drag-rope and then haul down time pole.
40. DISABLEMENT.
Time extent of disablemermt ordered will depend on time time
available at-id the probability of recapture.
To d i m e blethe gun sot/mat it canbe broug/mt into ac-tionimnrediatelyafter recapture :—Removo the breech block.
To disable the gunso that
itcern be brought into action after
repair ~—Disconnect time recoil unit and fire time gun.
To destroy the gun :—Place a m - i II.E. shell, ftmzed 101 E or1 01 B in time muzzle, load with H.E., fuzed 1 01 B or 1 01 B.Fire time gun by means of a ioung lanyard from mmndcr cover.
A length-i of telepimone wire attached to time lanyard is suitable
for time purpose.
NoTu.—Tho dial sight and chinonmet-ers s imouid always be
removed and taken away before a gun is abandommed.
41. BLANK AMMUNITION.
i. No officer, N.C.O. or gunner u v i m o has not been trained
a n m d passed in gun drill is to command a section or fornspart of a gun detachment firing blank ammunition at salutes
or at training.ii. When firing Q.F. blank cartridges no gun-i is to be re-
loadedwithin 15 seconds alter firing. Even after timis interval,
no gut-i is to bere-loaded until I hasexamined the chamber and
bore and removed any debris remaining Irons the previous
round.
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iii. In t i m e event of a missfiro, a furtimcr attempt s imouid be
made to fire the gun in its turn. In no case must time breech
bo opeimcd for at least one minute with black powder, mind ten
minutes with smokeless charges. No o n - i c must be in rear oftime breech when it is opened. In firing salutes, a im officer or
senior N.C.O. simould be detailed for time special dirty oftinning the interval after a miasfire and i n m l o r n m i m m g I oftimat gun when the breech may ho opened.
iv. As a further safeguard, I is responsible for seeIng
that time charge is properly home in f - l i e case before the round
is loaded.
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1. In every battery there should be at least six qualifiedlayers and nine qualified fuzo setters toa sub-sectioum, exclusive
of serjeant-s at-id iance-serjcarmts. A list of layers should bekept. All layers, fuze setters, section commanders, scrjeants
~tmdlance-serjeants should be tested periodically.2. All officers and Nos. I must be thoroughly conversant
with
i. TI-ic tests for and care of sigimtiumg gear at-id sights.
ii. The nmethods of obtaining parallel lines of fire.
iii. M.V. correeters and corrections Ior jump and droop.
3. Layerswill be tested by means of two tests: TestA willconsist of four lays indirect, test B of two lays direct,
4. A maximum of 20 marks will be given for each- i lay intest A, at-id 10 marks for each lay in test B . In order toqualify, a layer must obtain 81 marks.
The duties of 2 will be considered as part of each test.5. Tie examiner should be assisted by an officer or senior
N.C.O. w i t h m a stop watch and record book, and by a penciller
who will tale down all orders given for reference whenchecking time hay.
6. When laying indirect, three or nmor e aiming posts ~imormbe selected to the rear and on either flank, if possible, andmade known to all concerned.
‘ 7 . Before beginning the tests at least five targets will be
selected in the foreground at varying ranges a m m d angles of
sight and covering a front ofabout 25 degrees; except j im the
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Time field chnonncter, sigh-it chinornetcr amid range gearnmdicator should be tested daily and after prolonged firing.The alignment tests simould be carried out as often as possible.
At drill timeso tests should ho carried out frequently to giveofficers and N.C.Os. practice i n - i doing t i m e n e m accurately.
Time remaining test (cross levellit-ig gear) sinouid be carried
out occasionally, but adjust-metsts must only be made by an
artificer qualified to adjust the instrumnents. Timis test is
given-i in time Handbook.Atmy adjustment to optical inmstrurnenmts rn-inst be carried
out by an artificer qualified to adjust time inmstrnumncnts.
Sight cl iumometers s i m o m u l d be test-i’d periodically to determine
the error d i m e to backlasim, etc. Any adjustnment found to
be necessary must be carrie-il osmt by an artifieer qualified to
adjimst the instrtunmments.
Test I .——To test and adjust the held clinonneter.
To ascertain the index error.
1. Set time chinemetcr to read zero (degrees and minutes),
place the instrument on the elinometer plane of the gun, and
by meansof the elcvatimmg gear,bring the bubble to the centre
of its run. Turum time chinomnetcr e n m d for end. If the bubbledoesm m o t remain in the centre of its r i m u m , bringit thereby movingtime arm and sl imIer. Note the nmett reading. Half timis
reading is ti-ic INDEX ERROR of the clinornetcr.2. An alternative method may be employed. Procure a
clinonseter known to be in adjustment-, set at zero and place
it on ti-ic chinonseter piano an-id- by means of time elevatinggear bring the bmmbble central. Rennovo the eh inomete r .‘ r b - i c clinomcter to be tested is n m o w placedl on the clinometer
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Set time sight chinomoter at zero, a m m d bring the bubble
to the centre of its run by time left elevating hand-wheel;
place the field clinometer set at t i m e correction for jump
on the clinOmeterpiano at time muzzle, arc to the front. Bringtime bubble of the field ciim-ionneter to ti-ic centre of its rutsby the r igimt elevating handwheel. Time degree scale of the
range gear inmdicator should read zero.
If the degree scale of f-ho range gear indicator does u m o t
read zero, slacken time nut, revolve timc indicator until it
~ reads zero a m - i d re-clamp.
Remove t i m e round frona the chamber.
Alignment tests.
Before beginniumg these tests time followinmg preparations
should be made
i. Place t i m e carriage on a firmu pIatfornn.
ii. Select a weli -delhmed object at least 1,500 yardsdistant on which to lay.
iii. If this distant object cannot be found, level thecarriage transversely, set up the target testing
sigh-its see diagram)about 50 yards in frontof thegun at rigimt angles to the axis of the bore.
iv. If the carriage is not level t ranmsverschy, tho top of
the dial sigimt carrier and ti-ic target testing sights
should be sloped to ti-ic same angleas the carriage.
v. Remove the striker and fixcross-wires at tine muzzle
of the gun.*vi. Set time range gearindicator, ti-ic cowl of the dial sigh-it,the dial plate and micrometer scales of time dial
sight and time deflection scale of the open sight
at zero.
Th e cross-wirer must be r emoved on comnplction of test.
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The dial sight wi- ion issued is in correct adjustment, watet-t iglmt, and with all time cells and joints secured by screws.
It is very unlikely t imat time interior will be required to be
cleaned, and the dial sigh-it must on no account be taketm to
piecesexcept by persons in possession ofa certificate from time
Artillery Collegestating they arequalified to do such won-k,~ TI-ic body of the dial siglmt mitst be cleaned with a clean-i
e z soft cloth and a little oil, w i m i c i m must be rubbed oil after-
~ wards, care being taken that the glass is not touched. Timec~ exterior of eye.lens a m - i d window should be cleaned witimm u soft cloth or chamois leather, wimich must be kept perfectly
~ dry anti clean and be used for tlmis purpose only.
~ Der-matincor rubber eye-guards should notbe unnecessarily
~ exposed to extremes of temperature, to the sun’s rays, or toE~bright light.
Oil and grease will inevitably destroy rubber or dermatine,
~ and prolonged contact w i t i m benzol, petrol and chemicalsin is undesirable. If, however , oil or grease gets on the eye-~ guard, it should be immediately removed, either :—
(i ) By wiping with a clean rag soaked in bcnzol orpetrol.
ii By washing in water to which a little soap and sodaimave been added.
(iii) By wiping off with a clean dry rag.
The No. 7 dial sigh-it s l m o s m l d be removed from the bracketbefore travelling army distamico and when not in use must bekept in the ease piovitled for the purpose.
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The breech mechanism should be dismantled periodically
in order that it may be thoroughly cleaned.Time threadsof t i m e breech screw should be free fmoni burrs;
these may be removed by careful filing by an artifseer-, but
no p e r t i o m m of the timread should be cut away to ronuovo acrack.
Time breecim should ho kept covered up, w i s e - i - i possible, toprevent dust and grit getting into the breech fittings. Acover is pnovidcd for this vurvose.
(ii) To dismantle the breech mechanism.
With the breech closed remove the securing bolt of thestriker guideblock, set thesafety catch at“safe “ andremovethe firing mechanism in ono piece. Renmove pin securing
block, the breechmechanism lever, block, a m i d retaining catch.Open the breech by turning the barrel-shaped p i m m to tholeft. Remove the plate l~ctainingbreech screw and then
the breech screw from the pintie of the carrier. With.draw the cylindrical sliding croeshead from the grooved pro.jection in the breech screw. Take out the i m i n g o pin andremove the carrier, then withdraw the extractor, slide thelatch from t i m e groove in theretaining catchand take out the
plunger and spring.
iii To assemble the breech mechanism.
The breech mechanism is assembled in the reverse order,care beingtaken to see that the breeds screw is in the lockedposition before replacing the firing mechanism, and that thecylindrical sliding croashead is in t i m e correct position, viz.,to therear of theslide as far as it will go and the flat-bearing
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surface flush with t i m e edges. T l m i s is very important, asunless in tho position stated, the crankpin will not engagetim crosshead. After time brecclm mechanism lever, block and
retaining catch have been inserted in the slot on t i m e rightof t i m e carrier, t i m e retaining catch-i must be moved to the front
to d i sengage t i m e l a t c h - i f r om t i m e pro j ec t i on o n the carrier
before the whole can be pushed right home .
NoTn.—In order to prevent frncturo of tine stud o n tiner igimt side of t i m e carrier,a feeler gauge 0(5-ineimes ti~de sliounid
pass between time latch catch or tIme st-intl stop and tine gun.
A .C.I . 482/1923).
- iv> To dismantle the firing mechanism.
Close the breeclm, withdraw the securing bolt from the
carrier and remove the striker guide block, striker and firinglever. If it is desired to remove these parts as a unit, thesafety catch s imould be set at “safe” before the securing
bolt is removed.
When removing time striker from, or inserting it into, tlue
guide block, the safety catch of the latter must always bein the firing position.
To d i sman t l e the st r i k e r .— Pres s on t i m e top of the gu id efor mainspring so as to compress t i m e spring lightly, and atthe same time tilt the upper end of time guide from the
striker, and withdraw the guide a n d m a in spr in g . Removetime firing pin and the pin securing rebound block and witim-draw thelatter. Place the safety catch-i in the firing position,
force it out of its recess in the guide block towards the centreof t i m e b l o ck , a n d w i t h d r a w it.
v To assemble the firing mechanism.
Time firing mechanism is assembled in the r ev e r s e o rd e r .
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Failure to run-out Too n m u c l m liquid in buffer Operate snifting valve.Air in buffer Operate sniftimug valve.Valve adjusting run-out Open valve.
closed.Bur r s orgrit on slides .. Rotmiove obstructions.Reduced air pressure- in Test amid adjust pressure.
reeuperator.Paekings tootight ... Repack.
Nora.—lteduccd air pressure noisy ho duo to air alone-, or umlay becaused by le-alsagu of liquid from reeuperator ; the- precise- cause should be
ascertained, At high angles of elevation,’ the naIve adjusting run-out,may requiro adjustment.
iii When guns are resting in action.
Cool the bore. Allow air to escape from the buffer by
nneans of the snifting valve. Replenish the buffer. Tigimtenpackings if necessary. Replenish recuperator with liquid, if
necessary, after the gun has cooled.
5. THE RECUPERATOB.
1 ) To charge the recuperator with liquid.
Lash the gun to the cradle, level the cradle longitudinally
and transversely with a clinometer, remove plugs N and L,and attacim the pump connection and adapter. Open valveM at-id pump in oil until it overflows at N. Replace plug
N and pump in oil until the tail red is flush witim the rear
end of the slot in the cradle cap. Close valveM, disconnect
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the pump connection and adapter, and replace plug L.Care should be taken to see that the recuperator is correctly
charged as too much oil will cause serious damage and put
the gun out of action. When correctly charged it shouldcontain 0~pints of bufferoil.
ii To charge the recuperator with air.
Before charging witlm air it is important to see that the
securing collar is on therecupcratorpiston, in order to prevent
t i m e piston from being forced out to the rear when under
pressure, and timat the correct quantity of liquid is in therecuperator. Time-n proceed as follows: Attaeim the
air pump to the bracket on the trail, remove plug H and
attach the adapter and pressure gauge; connect the pumppipe to the adapter, open at valve K and pump until thogauge registers 6 30 lbs. a sq. in. Close valve K, discotmnecttine pipe from time adapter, and place time cap e m time adapter.
Open valve K, slack back the cap o n - i the adapter and release
pressuro until tine garugo sinews 600 lbs. a sq. in. Close
valveK, remove t i m e adapter w i t i m pressuregauge, and replaceplug H. The lashing may now be removed.
When charging by air bottle, care must be taken to openthe cock gradually to avoid damaging the gauge.
iii To test the air pressure.
See that the tail rod of tho floatingpiston is in t i m e cOrrect
position. Remove plug Hand screw in thu adapter, blankingthe outer e n d with the cap . Scr ew t i m e g a u g e into the adap t e r .
Open valve K when the gauge should register 600 lbs. a
sq. in. If correct, close valve K, reumiove the adapter and
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gauge and replace plug U. If the pressure is not correct,
inrocced as in (vi).
iv To test and adjust for liquid in air cylinder.Secure t i m e gun to thecradleandelevate to about25 degrees,
~remove “plug adapter” (II) and open “air valve” Kone turn. If air alone escapes there is no leakage; close t i m e
valve. Simould liquid show allow it all to escape before
closing time valve.
Re-charge with air in the usual way, up to the correct
pressure.
If leakage of oil into the air cylinder continues the packingsof the floating piston must be examined, and r e p l a c e d ifnecessary.
v To test and adjust for aeration of liquid in r e cupe—rator.
Place the gun horizontal, remove “plug, reeuperator,
filling” L and open the“
oil filling valve” (M) veryslightly.If liquid flows, close t i m e valve, but, if froth appears, air hasleaked into the liquid. Allow time frotim to blow out until
liquid flows, timen close the valve and make up less of oil in
the u s u a l m a n n e r .Should the amount of froth be excessive, it will benecessary
to strip the recuperater and to examine t i m e paekings, re~
placing any that may be defective.
(vi) To replenish air pressure lost by lealeage.
Proceed as for elmarging time recupcrator witim air, but
before opening valve K to admit air, pump pressure in pipe
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to 6 00 lbs. a sq. in., and see that t i m e correct anmount of liquid
is in t i m e recuperator.
vii Toreplenish liquid lost by leakage without releas-ing the air pressure.
Leakage from the rccuperator, if not excessive, can bemade up by means of tie screw putnp. It is not necessary
to release theair pressure for this purpose. Proceedas follows:The pump
should be filled,turned
nozzleupwards, and
afew turns given to t i m e screw in order to remove any air.Remove plug L anti screw the pump into place in the filling
hole. Open valve M and operate the pump by means ofthe handle, If necessary t i m e operation should be repeated;valve Id must be closed on e a c i m occasion before t i m e operationcan be repeated, and must aLso be closed on each occasionbefore removing the pump. Oil should be pumped in untiltho tail rod of the floatingpiston is flush with the rear endof the slot in the cradle cap. Close valve Id, remove pumpand replace plug L.
The capacity of the pump is about one-fifth of a pint.
Then test for oil leakage into air cylinder. Disregard ofthis may lead to dangerouspressures in the air cylinderand consequent damage to the equipment.
NoTE.—Air cannotescapeunless thereis afault in valve K.
Taking air pressure too often is to be deprecated, as somepressure is invariably lost on each occasion. The correctposition of the tail rod simould be taken to mean that therecuperator is in serviceable working order, and if the tailrod is not in the correct position it . is probably due to liquidleakage from the recuperator cylinder.
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Level the gun longitudinally and transversely. Removethe fill ing-hole plug from the tank. See that the isolatingvalve is open. Open the snifting valve to allow any air inthe buffer cylinder to escape and pour in oil until abouthalf-way up the inspection glass. Replace t i m e filling plug.About 6~it-its of oil are required to charge the buficr andtank.
Leakage from the buffer is automatically made up from
the oil reservoir when the isolating valve is open.Should the oil reservoir or the pipe connection of the oilreservoir be damaged, thebuffer can bo cimarged by removing
the isolating valve and using a funnel. Caro should betaken to see that the isolating valve is replaced before firing.
ii Cut-oft gear.
The cut-off gear is correctly adjusted if, at 30 degreeselevation as indicated on the elevation are, the hole in thosmall lever on the front end of the piston rod is directly overthe hole in the front cradle cap.If the rod of the cut-off gear be damaged, t i m e position of
the piston may be set for a constant recoil. To do this takeout t i m e pin from the front end of tho rod, turn the smalllever on the piston rod until the hole agrees with t h m e holein the front cradle cap and insert the pin in this hole. In
this position the cut-off gear gives the shortest recoil.
iii Glands.
Glands should be tightened when necessary. It is betterto do this when the cradle is warm, as the packings then
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seat better. They should not be over.tightened, as this maydistort the floating rings and also cause seizure.
To tighten up theglands :—Open the door provided in the
underside of the front cradle cap and tighten up the glandby means of a tommy. If a gland has been over-tightened
and it is desired to slacken it, thespringpawl must be pushed
up and twisted to lock it before t i m e gland can be turned.If a leakage occurs at the glands and tiglmtening up does
not prevent it, a supplementary packing ring should be usedor if a supplementary packing is already in use, the defective
-j packing should be renewed.
0
7. THE AIR PUMP.
Be f o r e starting w o r k , an external e x a m i n a t i o n s h o u l d be~ made to see that the pump is clean and serviceable.~ When assembling care must be taken to see that all parts
~ are clean and well lubricated. Working parts will requirefurther lubrication duringpumping.To obtain the best results it is essentini to employ a full
stroke in working the pump, i.e., from stop to stop.
When charging a system it is best to continue without astop until the desired pressure is reached, changing the menif fatigued. If a stop is unavoidable, note the pressure and
close valve K. Before continuing, pump the pressure in the
pipe up to the pressure noted before opening valve K.Ifthere is any falling off in the working pressure, examinethe valves. If gritty, the valves and springs should beremoved and cleaned. Ifnecessary, valves should be lightly
ground in and coated with thin oil. Ifthis does not improvethe efficiency of thepump, the piston should be removed and
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Axe, felling, curved he- lye IBar, supporting draught p o i o , No 3 1 ~ On platform board.B r e a s t p h e c e , s a d d l e r y , universal .... I JBox,grease, 3-lb I Under platform, in front.Brush, water, earriago I Under, in front, ne-ar side.Buckets, water, U.S. 6 Under, in rear, near side.
6 Under, in rear, o f T side.Blankets, U.S 2 On top of limber box.
Ropes, drag, heavy pairs I On platform b o a r d .
Screw, adjusting, d i a l sight holder 2 with n u t . ~In t r a y , small stores
Screw,catchplate, pinion nut ... 1Spade, Mark III 1 On platform boardSpring, deflectionnut 1 ~Spring, head, actuating rod .. 1Spring, plunger traversing lever ... 1Spring, pinion clamp 1 Spring, ranging gear ISpring, relief v a l v e 1 In t r a y , sma ll sto re s.Spring, f i r i n g goar 2 Spring, disc,No.62 4 ISpring, catch, limber and perch 1
hooks , JStraps, trace, universal saddlery . . 2
S t r a p s , s u p p o r t i n g , r e a r ~ad~erj ~ On platform boardS t r a p s , s u p p o r t i n g , f r o n t s a d d l e r
S w i n g l e t r e e s , Nos 1 O . or 1 1 ... I JT o o l s , threading ~ in. nnti•friction 1 Ire tray, small stores.
b a l l
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