TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 2 Download
Page 169 of 1555
TM 9-2320-387-24-2 10-79. HEATER CONTROL CABLE AND SHUTOFF VALVE ADJUSTMENT This task covers: Adjustment INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Lubricating oil (Appendix C, Item 45) EquipmentCondition Hood raised and secured (TM 9-2320-387-10). General Safety Instructions Ensure engine is cool prior to performing this procedure. Manual References TM 9-2320-387-10 TM 9-2320-387-24P MaintenanceLevel Unit NOTE Perform the following procedure if the heater temperature control assembly is difficult to operate. The repositioning of the heater temperature control cable and heater shutoff valve will reduce cable bends and allow access for lubrication. IAdjustment] WARNING 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. Ensure engine is cool prior to performing this procedure. Steam or hot coolant under pressure can cause injury to personnel. Push heater control knob (18) to OFF position. Loosen two clamps (12) on hoses (13). Rotate heater shutoff valve (1) and position heater shutoff valve lever (141 in the upward position. Tighten two clamps (12) on hoses (13). Loosen screw (11) and clip (101 and remove cable assembly (4) from heater shutoff valve<l). Remove screw (51, washer (61, clamp (71, and crankcase depression regulator valve (8) from mounting bracket (9). Install crankcase depression regulator valve (81 on mounting bracket (9) with washer (61 and screw (5). Cut loop end (2) from spring wire (3). Cut as close to loop end (2) as possible. Remove spring wire (3) from steel casing (161 and tube (15) by pulling heater control knob (18). Remove any kinks in spring wire (3). Remove a 5-in. (127.0-mm) section from steel casing (16). Route steel casing (161 through clamp (201. Install spring wire (3) into steel casing (16) and tube (15). Position end of steel casing (1610.75 in. (19 mm) from clip (10) and install steel casing (16) on heater shutoff valve (11 with clip (10) and screw (11). Position heater control knob (18) 0.125 in. (3.18 mm) from instrument panel (17). Turn spring wire (31three turns around heater shutoff valve pin (211. Cut off any excess spring wire (3). Pull out heater control knob (181 to ON position. Apply lubricating oil to heater shutoff valve lever (141 and shutoff valve pin (21). Apply lubricating oil to plunger (19). Move heater control knob (18) to OFF and ON several times to distribute oil. ,, Check engine coolant level (TM 9-2320-387-10). Start engine (TM 9-2320-387-10) and check heater shutoff valve (1) connections for leaks. lo-136