TOPIC 17. ENGINE REMOVAL/INSTALLATION

TM 10-3930-644-14&P

TOPIC 17. ENGINE REMOVAL/INSTALLATION

Engine removal and installation is easily and safely

14. Cover exposed distributor base to prevent

accomplished when reasonable care and attention to

entrance of foreign particles.

detail is exercised.

The following procedure is

recommended for efficient engine removal and

15. Disconnect and label oil pressure and

installation.

temperature sender wires. Disconnect neutral

start switch wires.

A. REMOVAL

16. Remove attaching clamps, capscrews and nuts,

and disconnect exhaust pipe. Tape exposed

CAUTION

exhaust manifold port.

Disconnect battery leads before

attempting removal. Remove battery

17. Remove oil pan drain plug and drain crankcase.

and battery tray.

Disconnect and

label any attaching wiring.

18. Remove transmission drain plug and drain

1. Attach

acceptable

hoist

chain

transmission oil.

counterweight eyelets and take up slack in

chain.

19. Disconnect and label engine oil filter lines.

Remove oil filter and attaching bracket.

2. Remove securing counterweight capscrews and

remove counterweight, taking care not to

CAUTION

damage radiator or hydraulic pump.

Cover or plug all open lines to

prevent contamination of engine

3. Remove radiator cap slowly, to ensure against

systems.

scalding, and open petcock at base of radiator

and on engine block, to drain water from block

20. Loosen air cleaner hose clamps and wing nut.

and radiator.

Remove air cleaner and attaching parts.

4. Remove upper and low er radiator hose clamps

21. Disconnect transmission oil filter lines, where

and hoses.

(Guard against damage to

applicable, and label.

thermostat mounted at base of upper hose.)

Disconnect transmission cooling oil lines.

22. Disconnect accelerator

linkage

and

choke

control at carburetor.

5. Remove radiator.

23. Close fuel tank shut-off valve and disconnect

6. Remove fan blade attaching capscrews and fan

fuel line to fuel strainer.

blade.

24. Disconnect transmission linkage, and cooling

7. Loosen alternator adjusting brace, remove and

lines.

inspect fan belt for possible cuts or cracks.

Replace if necessary upon engine installation.

25. Disconnect universal joint at transmission.

8. Disconnect and immediately cap hydraulic lines

26. Install lifting eyes in engine and transmission.

at hydraulic pump. Remove hydraulic pump,

pump gear and sleeve.

27. Firmly attach hoisting chain to lifting studs and

take up slack in chains.

9. Disconnect and label attaching alternator wiring.

CAUTION

10. Remove securing alternator capscrews and

Make certain that all electrical wiring,

alternator.

mechanical linkage and attachments,

and hoses are free and clear of

11. Disconnect spark plug ignition wires at plugs

engine/transmission attachment or

and mark.

obstruction prior to removal or

installation.

12. Remove spark plugs and cap or tape exposed

ports to prevent contamination.

28. Remove engine motor mount bolts.

13. Remove distributor cap with attaching ignition

29. Slowly hoist engine assembly free of frame

coil and spark plug wiring.

ensuring that engine and attached transmission

do not bind or bump against the frame resulting

in possible injury or unnecessary damage.

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