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 786 of 991

4-9. ENGINE

TM 9-2320-272-247-2

14.

Remove twelve screws (4), locktabs (5), six clamps (6), exhaust manifold (2), and six gaskets (3) from

three cylinder heads (1). Discard locktabs (5) and gaskets (3).

15.

Disconnect air compressor coolant line (9) and packing sleeve (8) from oil cooler elbow (7). Discard

packing sleeve (8).

16.

Remove five screws (13), lockwashers (12), oil cooler (14), and gasket (11) from cylinder block (10).

Discard lockwashers (12) and gasket (11).

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 shifiing load, may result in injury

or death to personnel.

• Engine must be securely mounted on repair stand. Failure to do

so may result in injury or death to personnel.

17.

Attach utility chain to two engine lifting eyes (20).

18.

Attach lifting device to utility chain.

NOTE

Assistant will help with step 20.

19.

Position engine (16) and two spacers (15) against engine stand, and install with four washers (17)

and bolts (18). Lower two bolts are installed in engine access holes (19).

20.

Remove lifting device and utility chain.

NOTE

• For disassembly, cleaning, inspection and reassembly of oil

cooler, refer to para. 4-23.

• For disassembly, cleaning, inspection and reassembly of power

steering pump, refer to para. 4-126 or 4-127.

4-104