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 99 of 863
TM 9-2320-260-34-2
15-15. HOIST CYLINDER MAINTENANCE
THIS TASK COVERS:
a.
Removal
d. Assembly
b. Disassembly
e.
Installation
c. Cleaning and Inspection
INITIAL SETUP
APPLICABLE MODELS
M817
TOOLS
General mechanic’s tool kit
(Appendix B, Item 1)
Torque wrench,
3/8-in. dr.
(Appendix B, Item
4)
Ring compressor (Appendix B, Item 15)
Spring tester (Appendix B, Item 10)
Lifting
device
Two chains
MATERIALS/PARTS
Three ring, spacers (Appendix D, Item 519)
Fourteen lockwashers (Appendix D, Item 215)
Four lockwashers (Appendix D, Item 218)
Three piston rings (Appendix D, Item 319)
Packing (Appendix D, Item 301)
O-ring
(Appendix D, Item 271)
Cotter pin (Appendix D, Item 16)
GAA grease (Appendix C, Item
14)
Lint-free cloth (Appendix C, Item 9)
PERSONNEL REQUIRED
Two
REFERENCES (TM]
LO 9-2320-260-12
TM 9-2320-260-10
TM 9-2320-260-34P-2
EQUIPMENT CONDITION
●
Roller arms removed (para.
15-14).
GENERAL SAFETY INSTRUCTIONS
●
Do not operate dump controls when dump body
is removed.
●
All personnel must stand clear during lifting
operations.
●
Ensure lifting capacity is greater than weight of
hoist cylinder.
●
Plugs are under spring tension. Release plugs
slowly.
Do not operate dump controls when dump body is removed. Injury
to personnel may result if lift cylinder is operated
when not secured.
CAUTION
Cap or plug all openings immediately after disconnecting lines
and hoses to prevent contamination. Remove caps or plugs prior
to connection. Failure to do so may result in damage to equipment.
NOTE
Tag all lines and hoses for installation, Have drainage container
ready to catch hydraulic oil.
1. Remove two hydraulic hoses (1) from hoist cylinder (2).
2. Remove two screws (5), lockwashers (4), upper crosshead retainer (6), lower crosshead retainer (7),
and crosshead (3) from piston rod (8). Discard lockwashers (4).
3. Remove four screws (9), lockwashers (10), and two bearing caps (11) from hoist cylinder (2) and
subframe (12). Discard
lockwashers (10).
4. Attach two chains on hoist cylinder (2) and lifting device.
15-38
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