TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM 9-2320-387-24- 1 i 8-25. POWER STEERING SYSTEM HYDRAULIC CONTROL VALVE MAINTENANCE This task covers: a. Removal b. Back Flush Procedure c. Inspection d. Installation INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Maintenance and repair shop equipment: automotive (Appendix B, Item 2) Manual References TM 9-2320-387-10 TM 9-2320-387-24P Equipment Condition l Battery ground cables disconnected (para. 4-68). l Hood raised and secured (TM 9-2320-387-10). General Safety Instructions Do not drain fluid when engine is hot. Maintenance Level unit NOTE If referred here fi-om chapter 2 troubleshooting instructions to perform back flush procedure, follow steps 1 through 4 and then proceed to task b. WARNING 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 l Note location of hoses for installation. l 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 FlushProcedure 1. Connect battery ground cables (para. 4-68). 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 f?ornNSN 4720-01-1862358,36 in. (91.4 cm) long) on control valve elbow (3). 5. Place drainage container underneath drain hose (16) to catch fluid. 8-68