TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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TM 9-2320-280-34 4-7. FUEL INJECTION PUMP COVER REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: Tools Equipment Condition General mechanic's tool kit: • Hood raised and secured (TM 9-2320-280-10). automotive (Appendix G, Item 1) • Battery ground cable disconnected Retaining tool (Appendix G, Item 26) (TM 9-2320-280-20). Materials/Parts General Safety Instructions Gasket (Appendix E, Item 25) Do not perform this procedure near fire, flames, or O-ring (Appendix E, Item 99) sparks Three lockwashers (Appendix E, Item 68) Manual References Maintenance Level TM 9-2320-280-10 Direct support TM 9-2320-280-20 TM 9-2815-237-34P WARNING Diesel fuel is highly flammable. Do not perform this procedure near fire, flames, or sparks. Severe injury or death will result. CAUTION Cover or plug all hoses, connections, and openings immediately after disconnection or component removal to prevent contamination. Remove all plugs prior to connection. a. Removal NOTE Prior to removal, tag leads for installation. 1. Loosen clamp (2) and disconnect fuel drain back hose (1) from fuel injection pump (6). 2. Disconnect leads 54A (3) and 569B (5) at fuel injection pump (6). CAUTION Fuel pump body must be thoroughly cleaned before disconnecting any attaching components to prevent foreign particles from entering pump. NOTE Working area should be clean, well ventilated, and free from blowing dirt and dust. 3. Clean exterior of fuel injection pump (6) in accordance with para. 2-13. 4. Remove three screws (9), lockwashers (10), four washers (11), and ground strap (12) from fuel injection pump cover (4). Discard lockwashers (10). 5. Remove cover (4) and gasket (13) from fuel injection pump housing (14). Discard gasket (13). NOTE Perform step 6 only if fuel injection pump cover is being replaced. 6. Remove fuel return line check valve (7) and O-ring (8) from cover (4). Discard O-ring (8). 7. Inspect fuel return line check valve (7) for damage. Replace if damaged. b. Installation NOTE Perform step 1 only if check valve was removed. 1. Install O-ring (8) and fuel return line check valve (7) in cover (4). 4-14