TM-9-2320-272-24-4
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 4 OF 4
JUNE 1998
TM-9-2320-272-24-4 - Page 388 of 836
TM 9-2320-272-24-4
5-58. ADAPTER HOUSING, LOW CLUTCH, LOW PLANETARY CARRIER, AND REAR
COVER INSTALLATION
THIS TASK COVERS:
Installation
INITIAL SETUP:
APPLICABLE MODELS
All
SPECIAL TOOLS
Two guide pins (Appendix E, Item 59)
TOOLS
General mechanic’s tool kit (Appendix E, Item 1)
Torque wrench (Appendix E, Item 144)
MATERIALS/PARTS
Two gaskets (Appendix D, Item 228)
Oil-soluble grease (Appendix C, Item 53)
REFERENCES (TM)
TM 9-2320-272-24P
SPECIAL ENVIRONMENTAL CONDITIONS
Work area clean and free from blowing dirt and
dust.
Installation
1.
Install new adapter housing gasket (8) on transmission housing (6).
NOTE
Guide pins maintain gasket alignment.
2.
3.
4.
5.
6.
Install two guide pins (7) in transmission housing (6).
Install adapter housing (9) over guide pins (7).
Install low ring gear hub (11) and snapring (10) on low planetary ring gear (1).
Install low planetary ring gear (1) into adapter housing (9).
Starting with clutch plate (4), alternately install eight clutch plates (4) and seven clutch discs (5) in
adapter housing (9).
NOTE
7.
8.
9.
10.
11.
12.
13.
Use oil-soluble grease to hold thrust washer in place.
Install thrust washer (3) on low planetary carrier (2) hub.
Install low planetary carrier (2) into adapter housing (9).
Install governor drive gear (17), speedometer drive gear (16), and sleeve spacer (15) on low
planetary carrier (2). Ensure governor drive gear (17) is seated over pin (19).
Install new rear cover gasket (18) and rear cover (14) over guide pins (7) with twelve washers (12)
and screws (13). Finger-tighten screws (13).
Remove two guide pins (7) and install remaining two washers (12) and screws (13).
Alternately tighten fourteen screws (13) 180° apart. Tighten screws (13) 30 lb-ft (41 N•m).
Repeat tightening sequence on fourteen screws (13) 180° apart to achieve final torque. Tighten
screws (13) 81-97 lb-ft (110-132 N•m).
5-382
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