TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM 9-2320-387-24- 1 3-36. FUEL INJECTION PUMP RETURN HOSE CHECK VALVE MAINTENANCE This task covers: a. Removal c. Installation b. Cleaning and Inspection INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Manual References TM 9-2320-387-24P Material/Parts O-ring (Appendix G, Item 256) General Safety Instructions l Do not perform this procedure near tire, flames, or sparks. l Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Maintenance Level Unit Equipment Condition Air horn removed (para. 3-14) WARNING Diesel fuel is highly flammable. Do not perform this procedure near fire, flames, or sparks. Severe injury or death may result. 1 a. Removal 1 CAUTION Cover or plug all hoses and connections immediately after disconnection to prevent contamination. Remove all plugs prior to connection. 1. Remove clamp (2) and hose (1) from injection pump check valve (3). 2. Remove check valve (3) and O-ring (4) from injection pump (5). Discard O-ring (4). b. Cleaning and Inspection WARNING Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use only with effective chip guarding and personal protective equipment (goggles/shield, gloves, etc.). Examine lower end of check valve (31, where ball seats, for evidence of debris. If debris is present, blow compressed air through check valve. Replace check valve (3) if debris remains, or if check valve (3) fails to function properly. [c.l 1. Install O-ring (4) and check valve (3) on injection pump (5). 2. Connect hose (1) to check valve (3) with clamp (2). 3-70