TM-9-2320-272-24-3
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 3 OF 4
JUNE 1998
TM-9-2320-272-24-3 - Page 206 of 799
TM 9-2320-272-24-3
4-71. TRANSMISSION REPLACEMENT (IN-VEHICLE) (Contd)
NOTE
Guide or alignment screws can be made from extra screws that
are longer and of the same thread size (appendix F, item 2).
16.
Install four guide screws (5) at 9, 11, 1, and 3 o’clock positions on flywheel housing (1).
17.
Position transmission jack under transmission (2) and raise until weight of transmission (2) is
supported by jack.
18.
Remove eight remaining screws (4) and lockwashers (3) from flywheel housing (1) and
transmission (2). Discard lockwashers (3).
WARNING
l
Keep rear of transmission tilted slightly downward at all times
to prevent converter from sliding off and causing injury to
personnel or damage to equipment.
l
Torque converter must be removed with transmission as an
assembly to prevent injury to personnel and damage to converter.
19.
Separate transmission (2) from flywheel housing (1), keep level until clear of guide screws (5), then
tilt rear of transmission (2) downward slightly to prevent converter (11) from separating from
transmission (2).
20.
Remove gasket (6) from transmission (2) or flywheel housing (1). Discard gasket (6).
21.
Install retaining strap (9) on converter (11) with two screws (12).
22.
Install retaining strap (9) on transmission (2) with four screws (10), washers (8), and nuts (7).
23.
Raise front of vehicle until clearance is provided for removal of transmission (2) from under vehicle.
24.
Remove transmission (2) and transmission jack from vehicle.
25.
Remove four guide screws (5) from flywheel housing (1).
b. Installation
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
WARNING
l
Keep rear of transmission tilted slightly downward at all times
to prevent converter from sliding off and causing injury to
personnel or damage to equipment.
l
Torque converter and transmission must be installed as an
assembly to prevent injury to personnel and damage to converter.
Install four guide screws (5) at 9, 11, 1, and 3 o’clock positions on flywheel housing (1).
Place transmission (2) on transmission jack.
Remove four nuts (7), washers (8), and screws (10) from retaining strap (9) and transmission (2).
Remove two screws (12) and retaining strap (9) from converter (11).
Position new gasket (6) on guide screws (5) and flywheel housing (1).
Raise front of vehicle until clearance is provided for installation of transmission (2) under vehicle.
CAUTION
Maintain transmission alignment to flywheel housing during
installation to prevent damage to converter.
Position transmission (2) and transmission jack under vehicle.
Raise transmission (2), align with guide screws (5), and seat against flywheel housing (1).
Install transmission (2) on flywheel housing (1) with clamp (13), eight new lockwashers (14), and
screws (15). Tighten screws (15) 36-40 lb-ft (49-54 N
l
m).
Remove four guide screws (5) from flywheel housing (1) and install four remaining new lock-
washers (14) and screws (15). Tighten screws (15) 36-40 lb-ft (49-54 N
l
m).
4-470
Back to Top
