TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 2 Download
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TM 9-2320-387-24-2 15-22. GLOW PLUG TIP REMOVAL (DAMAGED OR BROKEN) This taskcovers: Removal INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Needlenose pliers (Appendix B, Item 31) Equipment Condition l Fuel injector nozzle removed (para. 16-3). l Serpentine drivebelt removed (para. 3-81). Special Tools Socket, 3/8-in. (Appendix B, Item 144) General Safetv Instructions Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). ManualReferences Maintenance Level TM 9-2320-387-24P Direct support Personnel Required ’ One mechanic One assistant 1. 2. 3. 4. 5. 6. 7. NOTE Affected cylinder piston must be brought to Top Dead Center (TDC) position to ensure intake and exhaust valves are closed. Using socket wrench and breaker bar on torsion damper bolt (31, rotate crankshaft to bring piston (in affected cylinder) to TDC position. NOTE Perform steps 2 and 3 if failed glow plug is still installed in cylinder head. Perform step 4 if failed glow plug has been removed from the cylinder head and glow plug tip is broken off in cylinder head prechamber. Perform steps 5 and 6 if failed glow plug tip is swollen. Insert needlenose pliers through injector nozzle opening (l), grasp glow plug tip, break off expanded tip, and remove piece from prechamber. Remove glow plug (para. 3-39). WARNING Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa1. Use only with effective chip guarding and personnel protective equipment (goggles, shield, gloves, etc.). Direct compressed air into glow plug port (2) to expel broken tip from prechamber through injector nozzle opening (1). Coil one end of an 18-in. piece of tie wire the size of the injector nozzle opening (1). Place flat coil end over preheater to combustion chamber hole. NOTE In some cases it may be necessary to remove cylinder head to remove expanded glow plug tip. Using needlenose pliers with a 90 degrees bend, insert pliers through injector nozzle opening (11, grasp glow plug tip, break off expanded tip, and remove piece from prechamber. Install new glow plug (para. 3-39). 1540