TM 9-2320-280-20-2
8-26. POWER STEERING SYSTEM HYDRAULIC CONTROL VALVE MAINTENANCE
This task covers:
a. Removal
b. Back Flush Procedure
c. Inspection
d. Installation
INITIAL SETUP:
Tools
Equipment Condition
General mechanic’s tool kit:
Battery ground cable disconnected (para. 4-73).
automotive (Appendix B, Item 1)
Hood raised and secured (TM 9-2320-280-10).
Manual References
General Safety Instructions
TM 9-2320-280-10
Do not drain fluid when engine is hot.
TM 9-2320-280-24P
NOTE
If referred here from TM 9-2320-280-20-1 troubleshooting
instructions to perform back flush procedure, follow steps 1 through
4 and then proceed to b.
W A R N I NG
Do not drain fluid when engine is hot. Severe injury to personnel
will result.
CAUTION
Cover or plug all hoses and connections immediately after
disconnection to prevent contamination. Remove all plugs prior to
connection.
NOTE
Note location of hoses for installation.
Have drainage container ready to catch fluid.
1.
Loosen clamp (2) and disconnect power steering return line hose (1) from control valve elbow (4).
2. Loosen clamp (11) and disconnect fan clutch hose (12) from control valve fitting (10).
3. Loosen clamp (14) and disconnect steering gear hose (13) from control valve elbow (3).
4. Disconnect time delay module connector (6) from control valve connector (7).
5. Loosen clamp (5) and remove control valve (8) from bracket (9).
b. Back Flush Procedure
1. Connect battery ground cable (para. 4-73).
2. Install steering gear hose (13) on control valve fitting (10).
3. Remove control valve elbow (4) from control valve (8) and install pipe plug (15) (NSN 4730-00-011-
2578) on control valve (8).
4. Install drain hose (16) (make from NSN 4720-01-186-2358,36 in. (91.4 cm) long) on control valve elbow (3).
5. Place drainage container underneath drain hose
8-78
(16) to catch fluid.
