TM-9-2320-260-34-2
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME 2 OF 2
JULY 1994
TM-9-2320-260-34-2 - Page 137 of 863
TM 9-2320-260-34-2
15-25. RETRACTABLE BEAM DRIVESHAFT AND LOCK MAINTENANCE
THIS TASK COVERS:
a. Removal
c. Installation
b. Cleaning and Inspection
INITIAL SETUP
APPLICABLE MODELS
M820, M820A1, M820A2
TOOLS
General mechanic’s tool kit
(Appendix B, Item 1)
MATERIALS/PARTS
Five woodruff keys (Appendix D, Item 560)
Locknut (Appendix D, Item 194)
GAA grease (Appendix C, Item 14)
Lubricating oil (Appendix C, Item 21)
Emery cloth (Appendix C, Item 8)
REFERENCES (TM)
TM 9-2320-260-10
TM 9-2320-260-34P-2
EQUIPMENT CONDITION
Parking brake set (TM 9-2320-260-10).
SPECIAL ENVIRONMENTAL CONDITION
Vehicle must be on level surface.
NOTE
Retractable beam driveshafts and locks are replaced the same for
M820, M820A1, and M820A2 vehicles. This procedure covers the
M820A2.
a. Removal
1. Remove locknut (1), screw (4), pawl (3), and lock (2) from underframe (5) and stud (8). Discard
locknut (1).
2. Remove thirty screws (7) and five covers (6) from underframe (5).
3. Remove four setscrews (17) from four bushings (16).
CAUTION
Do not bend or strain ratchet shaft during removal. Doing so may
result in damage to equipment.
NOTE
Lubricate ratchet shaft prior to removal.
Direct assistant under van body to catch shaft components
during ratchet shaft removal.
Remove all nicks, burrs, and corrosion from exposed areas of
ratchet shaft with file or emery cloth.
4. Slowly remove ratchet shaft (10), five spacers (11), sprockets (12), spacers (13), nine bushings (14),
and four bushings (16) from underframe channels (15).
b. Cleaning and Inspection
1. For general cleaning instructions, refer to para. 2-8.
2. For general inspection instructions, refer to para. 2-9.
3. Remove key (19) and bushing (18) from five sprockets (12). Discard five keys (19).
4. Inspect bushings (18), (14), and (16) for wear. Replace bushing (18), (14), or (16) if worn.
15-76
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