TM-9-2320-280-20-2
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 2 OF 3
JANUARY 1996
TM-9-2320-280-20-2 - Page 892 of 951
TM 9-2320-280-20-2
8 - 8 6
Change 2
8 - 2 9 .
POWER STEERING SYSTEM BLEEDING
This task covers:
Bleeding
Bleeding
1.
Make sure engine is shut off (TM 9-2320-280-10) and turn wheels all the way to the left.
2.
Add power steering fluid (TM 9-2320-280-10) to “FULL COLD” level on reservoir. Leave reservoir
cap off.
3.
Raise front wheels off ground (para. 8-2).
4.
Turn steering wheel left and right, holding wheels at steering stops for five seconds for at least
40 times.
NOT E
• Power steering fluid must be free of bubbles and foam. If bubbles
or foam are noted, it could be an indication of a loose connection
or leaky O-ring.
• Fluid with air in it will have a milky appearance. Air must be
eliminated from system before normal steering action can be
o±b±t±a±i±n±e±d±
.
5.
Check power steering fluid level (TM 9-2320-280-10). If any bubbles are seen, repeat step 4.
6.
Start engine (TM 9-2320-280-10) and with engine idling, add power steering fluid (TM 9-2320-
280-10) if necessary. Install reservoir cap.
7.
Turn wheels to center, shut off engine, and lower front wheels to ground (para. 8-2).
8.
Start engine (TM 9-2320-280-10) and run engine for two or three minutes, turning wheels left and
right.
NOT E
If pump is noisy, recheck hoses for possible contact with vehicle
body or engine. If no contact is found and noise continues, turn
engine off and repressurize system by following steps 9 and/or 10.
9.
Remove reservoir cap. Wait for system to cool. Reinstall reservoir cap. Start engine (TM 9-2320-
280-10) and check pump for noise, if noise is still present continue to step 10. If noise stopped,
proceed to step 11.
10.
Turn engine off (TM 9-220-280-10). Remove fluid from reservoir using a suction device. Refill
reservoir with clean, cool fluid. Install reservoir cap. Start engine (TM 9-2320-280-10) and check
pump for noise. If noise is still present, replace power steering pump (para. 8-24 or 8-24.1).
11.
Turn engine off (TM 9-2320-280-10).
INITIAL SETUP:
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Personnel Required
One mechanic
One assistant
Manual References
TM 9-2320-280-10
TM 9-2320-280-24P
Equipment Condition
Hood raised and secured (TM 9-2320-280-10).
FOLLOW-ON TASKS: • Check power steering fluid level (TM 9-2320-280-10).
• Lower and secure hood (TM 9-2320-280-10).
• Operate vehicle and check for proper steering operation (TM 9-2320-280-10).
Back to Top
