TM-9-2320-272-24-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4
JUNE 1998
TM-9-2320-272-24-1 - Page 828 of 1015
TM 9-2320-272-24-1
3-169. REAR SPRING SEAT MAINTENANCE
THIS TASK COVERS:
a. Removal
b. Cleaning and Inspection
c. Lubrication
d. Installation
e. Adjustment
INITIAL SETUP:
APPLICABLE MODELS
All
TOOLS
General mechanic’s tool kit (Appendix E, Item 1)
Torque wrench (Appendix E, Item 144)
Hook tester scale (Appendix E, Item 55)
MATERIALS/PARTS
Six lockwashers (Appendix D, Item 364)
Two
felt washers (Appendix D, Item 111)
Seal assembly (Appendix D, Item 634)
Gasket (Appendix D, Item 161)
GAA grease (Appendix C, Item 28)
Lubricating oil (Appendix C, Item 50)
Drycleaning solvent (Appendix C, Item 71)
REFERENCES (TM)
LO 9-2320-272-12
TM 9-2320-272-10
TM 9-2320-272-24P
EQUIPMENT CONDITION
GENERAL SAFETY INSTRUCTIONS
Rear spring assembly removed (para. 3-167).
Fire extinguisher will be kept nearby when
drycleaning solvent is used.
Drycleaning solvent is flammable and toxic. Do
not use near open flame.
1.
Remove six screws (9) and lockwashers (8) from spring seat cap (10). Discard lockwashers (8).
2.
Remove spring seat cap (10) and gasket (11) from spring seat (1). Discard gasket (11). Clean
gasket (11) remains from mating surfaces.
3.
Remove locking nut (12) and key washer (13) from crosstube (2).
4.
Remove bearing adjusting nut (14) and outer bearing (15) from crosstube (2).
5.
Remove spring seat (1) from crosstube (2).
6.
Remove wiper ring (3), washer (4), two felt washers (5), packing retainer (6), grease seal assembly (7),
and inner bearing (16) from spring seat (1). Discard felt washers (5) and grease seal assembly (7).
NOTE
Perform step 7 only when bearing races must be removed because of
cracked, pitted, or scored condition, or if bearings are to be installed.
7.
Remove bearing races (17) and (18) from spring seat (1).
WARNING
Drycleaning solvent is flammable and toxic. Do not use near
open flame and always have a fire extinguisher nearby when
solvents are used. Use only in well-ventilated places, wear
protective clothing, and dispose of cleaning rags in approved
container. Failure to do this may result in injury or death to
personnel and/or damage to equipment.
1.
Clean all parts in drycleaning solvent and allow to dry
2.
Inspect all parts for cracks, pitting, or scoring. Replace parts as necessary if cracked, pitted, or
scored.
3-464
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