BC-S-700,720+ B B o o b b c c a a t t Service Manual 700, 720, 721, & 722 THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF BOBCAT OR IT’S SUCCESSORS. BOBCAT AND IT’S SUCCESSORS ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL. TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS. Service Manual
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Bobcat 700 | 720 | 721 | 722 Service Manual2-6 2-9 HYDRAULIC SYSTEM 700, 720, 721, 722 Loader Service Manual . 3-4.1 Adjustment Of The Steering Linkage 1. Put the machine on safe blocks.
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BC-S-700,720+
BBoobbccaattService Manual
700, 720,721, & 722
THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF BOBCAT OR IT’S SUCCESSORS. BOBCAT AND IT’S SUCCESSORS
ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL.
TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.
This manual gives instructions for correct service and adjustment of the Bobcat, and detailed overhaul instructions of the engine, drive system, loader hydraulic/hydrostatic system and general mainframe components.
Refer to the Owner's Manual for general operating instructions (Starting Procedure, Daily Checks, Bucket Operation, Minor Maintenance, etc.).
A general inspection of the following items should be made whenever the machine has had service or repair:
TRANSMISSION & DRIVE SYSTEM .................... 1-5 1-12
A WARNING
DO NOT service the Bobcat loader without instructions or taking the necessary safety precautions. Before working on the loader, see the warnings and instructions at the beginning of this Service Manual. After making the repair or adjustment, always check the function of the loader. Failure to obey warnings may cause injury or death.
The air cleaner system must be kept clean and free from defects for good engine performance and long service life.
Service air cleaner as follows:
1. Remove and clean dust cup every day (Fig. 1-16).
2. Do not remove element unless replacement is necessary.
NOTE: Be sure (1) gasket surfaces are clean before installing new element and (2) be sure gasket is in correct place.
3. Check complete air cleaner system and make replacement of any parts with defects. Be sure hose connections are tight.
4. Check running operation of air cleaner system as follows:
a. Start engine and run at idle.
b. Close air inlet on air cleaner. The engine speed must become slower, then stop (722 only). Check the condition indicator for the red ring (720, 721); if the red ring appears, the system is good.
c. If the engine does not stop, the system has a leak. Check, and make repairs as necessary.
5. Check hose from air cleaner to carburetor for damage caused by the hose clamp not being correct at carburetor inlet (Fig. 1-6a).
OPERATION OF THE HYDRAULIC SYSTEM .......................................... 2-1
PROBLEM ANALYSIS CHART ......................... 2-3
VANE PUMP SERVICE ............................... 2-7
A WARNING
DO NOT service the Bobcat loader without instructions or taking the necessary safety precautions. Before working on the loader, see the warnings and instructions at the beginning of this Service Manual. After making the repair or adjustment, always check the function of the loader. Failure to obey warnings may cause injury or death.
3. Disconnect the control linkage at the pump control arms.
4. Loosen the left steering support (Fig. 3-4) and move it sideways until the roller contacts the tank wall and the stop contacts the steering shaft at the same time. Tighten the support bolts.
5. Loosen the right steering support and move it until there is 0.0625 inch (1,6 mm) clearance between the two pads (Fig. 3-4). 1ighten the support bolts.
6. Tighten the 0.3125 inch bolt until the length of the spring is 2.5625 inch (65 mm) with the steering levers in neutral position (Fig. 3-5).
7. Loosen the right steering roller. Slide it vertically until both rollers contact the plate at the same time (Fig. 3-6).
8. Start the engine and let it run at idle. Put the pintle control arms on the transmission pump in neutral position (no wheel movement).
9. Loosen the lock nuts on the linkage rods. Turn the swivel to make alignment with holes in the pintle arms. 1ighten the lock nuts, and the bolts which hold the linkage in place (Fig. 3-7).
10. Lower the ROPS and install the fastening screws. Put the machine on the floor, and test the steering levers with the machine running.
3-4.2 To Remove The Steering Lever Assembly
1. Disconnect the linkage rods at the front.
2. Remove the four bolts which hold the mounting clamps to the frame.
3. Remove the retainer collar on the left hand steering lever. Remove the left lever.
4. Hold the limiting bracket (1) and friction bracket (2) together with a locking pliers. Lift the assembly out of the machine (Fig. 3-8).
Assembly is the reverse of disassembly. (Also see Adjustment of the Steering Linkage).
LOADER LIFT ARM ASSEMBLy ....................... 5-2
THE BOB-TACH ..................................... 5-1
A WARNING
DO NOT service the Bobcat loader without instructions or taking the necessary safety precautions. Before working on the loader, see the warnings and instructions at the beginning of this Service Manual. After making the repair or adjustment, always check the function of the loader. Failure to obey warnings may cause injury or death.
GENERATOR SERVICE .............................. 6-7
PROBLEM ANALYSIS CHARTS ....................... 6-2
STARTER SERVICE .................................. 6-8
A WARNING
DO NOT service the Bobcat loader without instructions or taking the necessary safety precautions. Before working on the loader, see the warnings and instructions at the beginning of this Service Manual. After making the repair or adjustment, always check the function of the loader. Failure to obey warnings may cause injury or death.
DO NOT service the Bobcat loader without instructions or taking the necessary safety precautions. Before working on the loader, see the warnings and instructions at the beginning of this Service Manual. After making the repair or adjustment, always check the function of the loader. Failure to obey warnings may cause injury or death.
TECHNICAL DATA ..................................... .
A WARNING
DO NOT service the Bobcat loader without instructions or taking the necessary safety precautions. Before working on the loader, see the warnings and instructions at the beginning of this Service Manual. After making the repair or adjustment, always check the function of the loader. Failure to obey warnings may cause injury or death.