TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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4-6. FUEL INJECTION PUMP MAINTENANCE This task covers: a. Removal c. Installation b. Repair TM 9-2320-280-34 4-8 Change 1 NOTE • In some cases, flanged head fasteners may be present instead of standard fasteners and washers. In all cases, washers should be used when replacing a flanged head fastener with a standard fastener. • Prior to removal, tag leads for installation. • Have drainage container available to catch fuel. 1. Disconnect leads 54A (3) and 569B (4) at fuel injection pump (7). 1.1. Remove tiedown strap (3.1) from leads 54A (3) and 569B (4). Discard tiedown strap (3.1). 2. Loosen clamp (2) and disconnect fuel drain back hose (1) from fuel injection pump (7). 3. Loosen clamp (9) and disconnect outlet hose (10) from hose adapter (8). 4. Remove return spring (5) from throttle shaft lever (6). 5. Pull off cable clip (12) from modulator link pin (13). 6. Slide modulator link (11) forward and disconnect from fuel injection pump (7). 7. Remove hose adapter (8) from fuel injection pump (7). WARNING • Diesel fuel is highly flammable. Do not perform this procedure near fire, flames, or sparks. Severe injury or death will result. • Gaskets installed on some 6.2L engines assembled prior to 1991 may contain asbestos. Gaskets should be removed with a scraper or putty knife then disposed of IAW current directives. Inhalation of asbestos fibers can cause respiratory ailments CAUTION Cover or plug all hoses, connections, and openings immediately after disconnection or component removal to prevent contamination. Remove all plugs prior to connection. NOTE The fuel injection pump replacement procedures for 6.2L and 6.5L engine models prior to, and later than 1990 are basically the same. Refer to engine decal model number on left rocker arm cover before ordering replacement parts, since replacement parts are not interchangeable. INITIAL SETUP: Tools ____ General mechanic's tool kit: automotive (Appendix G, Item 1) Materials/Parts _____________ Gasket (Appendix E, Item 15) Tiedown strap (Appendix E, Item 210.1) Manual References ________________ TM 9-2320-280-10 TM 9-2320-280-20 TM 9-2815-237-34P TM 9-2815-237-34 Equipment Condition _________________ • Engine oil filler tube removed (TM 9-2320-280-20). • Kick-down switch removed (TM 9-2320-280-20). • Fuel injection lines removed (para. 4-4). • Accelerator cable mounting bracket removed (para. 4-10). • Remove TP sensor (TM 9-2320-280-20). General Safety Instructions ______________________ • Do not perform this procedure near fire, flames, or sparks. • Gaskets installed on some 6.2L engines assembled prior to 1991 may contain asbestos. Gaskets should be disposed of IAW current directives. Maintenance Level _______________ Direct support a. Removal