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 21 of 863
TM 9-2320-260-34-2
I
12-7. POWER STEERING ASSIST CYLINDER MAINTENANCE
THIS TASK COVERS:
a. Disassembly
c. Assembly
b. Cleaning and Inspection
INITIAL SETUP
APPLICABLE MODELS
MATERIALS/PARTS (Contd)
All
Helical spring (Appendix D, Item 522)
Lubricating oil (Appendix C, Item 21)
TOOLS
General mechanic’s tool kit
REFERENCES (TM)
(Appendix B, Item 1)
LO 9-2320-260-12
Retaining ring pliers (Appendix B, Item 116)
TM 9-2320-260-20
MATERIALS/PARTS
TM 9-2320-260-34P-1
Seal (Appendix D, Item 435)
EQUIPMENT CONDITION
Wiper ring (Appendix D, Item 345)
Power steering assist cylinder removed
Back-up ring (Appendix D, Item 344)
(TM 9-2320-260-20).
preformed packing (Appendix D, Item
306)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Thoroughly clean exterior of steering assist cylinder (3).
NOTE
Have drainage container ready to catch oil.
Hold ports downward and push piston rod (7) in and out to remove oil from steering assist
cylinder (3).
Remove three screws (12), seal retainer (11), wiper ring (10), and retainer plate (9) from steering
assist cylinder (3). Discard wiper ring (10).
Push gland (6) in and remove retaining ring (8) from large end of steering assist cylinder (3).
Remove gland (6), piston (5), and piston rod (7) as an assembly from large end of steering assist
cylinder (3).
Remove power cylinder nut (4) from piston rod (7).
Turn piston assembly (5) counterclockwise to remove from piston rod (7).
Remove gland (6) from piston rod (7).
Using retaining ring pliers, remove retaining ring (16) from gland (6).
Remove flat washer (18), seal (15), flat washer (17), ring spacer (14), backup ring (19), and
preformed packing (13) from gland (6). Discard seal (15), backup ring (19), and preformed
packing (13).
Remove two ball seats (1) and helical spring (2) from steering assist cylinder (3). Discard helical
spring (2).
b. Cleaning and Inspection
NOTE
No repairs are to be made on parts. If parts are damaged, install
new power steering assist cylinder.
1. For general cleaning instructions, refer to para. 2-8.
2. For general inspection instructions, refer to para. 2-9.
12-16
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