(52,911)...Allison 4th Generation Electronic Controls wittr closed loop adaptive shifu Shift Sequences [C = Converter mode (lockup clutch disengaged); L = [o*up (lockup clutch engaged)]

T27g (R) specification

For Applications with engines up to '179 kW (240 hp) gross input

power and up to 900 N.m (664 lb-ft) gross input torque.

BATING5

City Bus 900 (664) 17e (2401 1857 (1370) 24,000 (52,911) City Bus

Tour Coach e00 (664) 179 (240) 1 857 (1 370) 24,000 (52,91 1) Tour Coachi

, l.GrossPor^/erratingasde{inedbylsO 1585orSAE11995;2.TurbineTorquelimitbasedoniSCMNstandarddeductions. i

Acceptable full-load engine governed speed 2000 - 2800 rpm

Acceptable engine idle speed range (with transmission in Drive) 500 - 800 rpm

Maximum output shaft speed at 105 kmlhr (65 milhr) - retarder-equipped models only

MSUNT!I{G

To Engine SAE No.2

ln Chassis Rear support available (required for some installations)

}RIVT?EAIilq Iil'TERFACES

TCRQUI e CIiliv!fiTER

Type One stage, three elemen( polyphase.

lncludes standard integral damper which is operational in lockup.

Model

MfCHAiliICAL RA?:C5 (Gearratiosdonotincludetorqueconvertermultiplication)

Range

Stall Torque Ratio

TC-41 1 2.71 1.86 : 1

TC-41 3 2.M Ihird 1.41 :1

TC-415 2.35 Four*r

rc-417 2.20 Fifth

TC-41 8 1.98

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Allison 4th Generation Electronic Controls wittr closed loop adaptive shifu

Shift Sequences [C = Converter mode (lockup clutch disengaged); L = [o*up mode (lockup clutch engaged)]

Tour Coach

Standard: 1 C-[1 L]-2C-2 L-31-41-51

0ptional: 1 C-[1 Ll-2C-2 L-31-4t-51-61

City Bus

Standard: 1 C-[1 L]-2C-2 L-31-41

Optional: 1 C-[1 L]-2C-2 L-3 L-41-5 L

TCM must be calibrated for "11" option. Second-gear-start calibrations are not available for all vehicle applications,

Driver-to-Transmission lnterface Cab-mounted shift selector, pushbutton or lever with two-digit display (range selected and range attaired)

,l:i-?;.'\ : r_aarl

sAE J1 939, SAE il 587, lS0 9141 , IESCANCommunication Protocol - EngineAlehicle Systems I nterface

CONTfiGt 5Y5TiM

Description

Pi.iYs;{AL }E5E3IPT;CNlnstallation length* Dry weight Depth below transmission centerline

With Deep Oil Sump (Standard) With Shallow oil Sump (optional)

Basic Model 740 mm (29.0 in) 243 kg (535 lbs) 328 mm (12.9 in) 283 mm (11.5 in)

With Retarder 740 mm (29.0 in) 280 kg (615lbs) 328 mm (12.9 in) 283 mm (11.5 in)!

| *Approximate length from engine housing to output flange (depending on output ilange type)

I

fiUTPUT RETAPDTft PR*V|Sl*i{ i*PTiCni}

Type

Capacity

Torque

lntegral, hydraulic

Power

*li- sYSTEid;

Oil type Transynd*, DEXRON"-| ll

Capacity. excluding external circuiG

With Deep Oil Sump 27 litres (29 quarts)

1760 N.m (1300 lb-ft) 373 kW (500 hp) With Shallow OilSump 25 litres (26 quarts)

1490 N.m (1 100 lb-ft) 298 kW (400 hp) Main circuit oil filter Replaceable element integral

Cooler circuit oil filter Replaceable element, integral

SPIED0ME?at FRCIj;5iC i.j

Description N on-zero-crossing square wave

8, 16 or ztO pulses per revolution of transmission output shaftElectronic output from TCM

T?7S

Electronic oil level sensor (0LS)

TA' HCC I.+PH IECVI: I O f\i

Tone wheelMountingLocation

M18 x 1 .5 mefic threadTransmission rear cover or retarder housing

T27S {R}

Location