TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 2 Download
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TM9-2320-387-24-2 1523. ENGINE INJECTION PUMP TIMING This taskcovers: a. Timing Check b. Timing Adjustment INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 11 Manual References TM 9-2320-387-10 TM 9-2320-387-24P Special Tools Timing gauge (Appendix B, Item 26) Dynamic timing meter (Appendix B, Item 27) Materials/Parts Metallic wool (Appendix C, Item 83) Personnel Required One mechanic One assistant Equipment Condition l Hood raised and secured (TM 9-2320-387-10). l Engine access cover removed (para. 10-22). l Companion seat and battery box cover removed (para. 10-43). General Safety Instructions Never adjust timing while engine is running. Maintenance Level Direct support a. Timing Check 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 15-42 NOTE Magnetic pickup receptacle on timing bracket must be correctly positioned or timing meter will not register correctly. Insert timing gauge into magnetic pickup receptacle (8) on timing bracket (1). Rotate timing gauge so pointer on gauge fits into Top Dead Center (TDC) notch (9) in timing bracket (1). If pointer on gauge does not fit exactly into TDC notch (91, bend magnetic pickup receptacle (8) until pointer on gauge fits exactly into TDC notch (9). Remove timing gauge from pickup receptacle (8) on timing bracket (1). NOTE End of magnetic pickup must be 0.06 in. (1.5 mm) from torsional damper. Install magnetic pickup (71 into magnetic pickup receptacle (8) and connect pickup lead (6) to dynamic timing meter. NOTE Clamp-on pickup must be used on a straight section of tube no farther than 4 in. (10 cm) from injection nozzle. Clean cylinder number one injection line (2) with metallic wool. CAUTION Do not overtighten clamp-on pickup or damage to pickup will result. Install pickup (4) on injection line (21. Connect ground clip (31 to fuel injection line (2) and connect pickup lead (5) to timing meter. Route power leads of timing meter into battery compartment and connect red power lead (111to positive battery terminal (12) on rear battery (14). Connect black ground lead (10) to negative battery terminal (131 on rear battery (14). Display should light up and read: SE-l 20.0.