TM-9-2320-272-24-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4
JUNE 1998
TM-9-2320-272-24-2 - Page 758 of 991
4-5. POWER
TM 9-2320-272-24-2
WARNING
• Lifting device must have a weight capacity greater than the
combined weight of the engine and transmission to prevent
injury or death to personnel and damage to equipment.
• All personnel must stand clear during lifting operations. A
snapped cable, or swinging or shifting load, may result in injury
or death to personnel.
• Do not put hands between frame and engine supports during
lifting operations. Use prybar to adjust position of engine during
lifting operations. Failure to do so may result in injury or death
to personnel.
CAUTION
Always remove engine slowly. Lift out of chassis in short lifts and
closely observe all engine and transmission attachments during
removal to prevent damage to equipment.
NOTE
Engine must be adjusted constantly during lifting operations.
7.
Remove engine (3) and transmission (2) from vehicle.
8.
Remove six isolators (4) and two washers (7) from crossmember (8) and left (6) and right (5) engine
mounts.
9.
Remove two screws (14), washers (9), and radiator brackets (13) from front engine mount (15).
10.
Remove two screws (10), washers (11), and isolators (12) from front engine mount (15).
WARNING
• Do not detach chain from engine until engine is supported.
Failure to do so may result in injury or death to personnel.
• Engine must be securely mounted on repair stand. Failure to do
so may result in death or injury to personnel.
11.
Remove lifting device and utility chain from two engine lifting brackets (1).
1.
Install chain on two engine lifting brackets (1).
2.
Install lifting device on chain. Raise lifting device enough to remove slack from chain.
3.
Install two isolators (12), washers (11), and screws (10) on front engine mount (15).
4.
Install two radiator brackets (13) on front engine mount (15) with two washers (9) and screws (14).
WARNING
• All personnel must stand clear during lifting operations. A
snapped cable, or swinging or shifting load, may result in injury
or death to personnel.
• Do not put hands between frame and engine supports during
lowering operations. Use prybar to adjust position of engine
lowering operations. Failure to do so may result in injury or
death to personnel.
NOTE
Chain must be adjusted so transmission points downward to allow
clearance of engine over front axle.
5.
Raise engine (3) and transmission (2) and position in vehicle.
4-76
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