TM 9-2320-272-24-2
4-4. POWER PLANT (M939/A1) REPLACEMENT (Contd)
INITIAL SETUP (COND):
GENERAL SAFETY INSTRUCTIONS
EQUIPMENT CONDITION
Lifting device must have a capacity greater than
Parking brake set (TM 9-2320-272-10).
the combined weight of the engine and
Battery ground cables disconnected
transmission.
(para. 3-126).
All personnel must stand clear during lifting
Air reservoirs drained (TM 9-2320-272-10).
operations.
Engine oil drained (para. 3-5).
Do not put hands between frame and engine
Transmission oil drained (para. 3-133).
supports during lifting operations.
Hood removed (para. 3-275).
Do not detach chain from engine until engine is
Radiator drained and removed (para. 3-59).
supported.
Coolant hoses and tubes removed
Engine must be securely mounted on repair stand.
(para. 3-54).
Never start a new or repaired engine without
Front exhaust pipe removed (para. 3-50).
performing run-in starting procedures (para. 4-8).
Engine oil dipstick and tube removed (para.
3-3).
Air intake pipe and hump hoses removed
(para. 3-14).
Transmission PTO-to-hydraulic pump drive
shaft removed, if equipped (para. 3-334).
Transmission-to-transfer case propeller shaft
removed (para. 3-148).
Surge tank removed (3-61).
Radiator fan blade assembly removed
(para. 3-72).
a. Preliminary Disconnections
NOTE
If a special purpose kit is installed on vehicle, refer to
1.
Disconnect wires (3) and (2) from water temperature sending unit (4) and engine high temperature
sending unit (1).
2.
Remove hose clamp (8) and hose (6) from water heater shutoff (7). Tie hose (6) clear of engine (5).
3.
Remove hose clamp (10) and hose (9) from water heater shutoff (11). Tie hose (9) clear of engine (5).
4.
Remove two screw-assembled lockwashers (27) and terminal cover (26) from alternator (28). Discard
screw-assembled lockwashers (27).
5.
Remove two screws (21), lockwashers (20), and retainer (19) from alternator (28). Discard
lockwashers (20).
6.
Remove screw (14), lockwasher (13), and wire (12) from alternator (28). Discard lockwasher (13).
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