TM-9-2815-237-34 HMMWV Engine Direct Support & General Support Maintenance Manual Download
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TM 9-2815-237-34 2-27. OIL PUMP REPAIR This task covers: a. Disassembly c. Inspection b. Cleaning d. Assembly INITIAL SETUP: Tools Equipment Condition General mechanic’s tool kit: Engine disassembled automotive (Appendix E, Item 1) (para. 2-15). Hammer, soft head (Appendix E, Item 30) Materials/Parts Lubricating oil, OE/HDO (Appendix B, Item 13) Manual References into subassemblies TM 9-2815-237-34P a. Disassembly 1. Remove shaft extension (10) and coupling (9) from pump body (8). 2. Remove four capscrews (3) and pump cover (5) from pump body (8). 3. Mark drive gear (7) and idler gear (6) for assembly and remove. 4. Remove retaining pin (4), regulator spring (l), and pressure regulator valve (2). b. Cleaning Clean all components in accordance with para. 2-9. c. Inspection NOTE ● For general inspection instructions, refer to para. 2-10. ● Pump body, pump cover, and pump gears are not serviced separately. If any of these parts require replacement, replace entire oil pump. 1. Inspect pump body (8) and pump cover (5) for damage. Replace oil pump if damaged. 2. Inspect drive gear (7) and idler gear (6) for damage. Replace oil pump if damaged. 3. Inspect regulator valve (2) for scoring or nicks. Replace if scored or nicked. 4. Inspect regulator spring (1) for damage. Replace if damaged. 5. Inspect shaft extension (10) and coupling (9) for damage. Replace if damaged. 2-78