TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 3 Download
Page 550 of 1170
11-194. HEATER FUEL PUMP REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: Applicable Models M996, M996A1, M997, M997A1, M997A2 Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Materials/Parts Sealing compound (Appendix C, Item 44) Two locknuts (Appendix G, Item 70) Tiedown strap (Appendix G, Item 308) Manual References TM 9-2320-280-24P Equipment Condition Battery ground cable disconnected (para. 4-73). General Safety Instructions Do not perform this procedure near fire, flames, or sparks. WARNING Diesel fuel is highly flammable. Do not perform this procedure near fire, flames, or sparks. Severe injury or death will result. NOTE • Have drainage container ready to catch fuel. • Cover or plug all open connections immediately after disconnection to prevent contamination. Remove covers or plugs prior to connection. • Apply sealing compound to threads of all fuel line joints before installation. 1. Disconnect two fuel lines (8) from elbow (7) and fitting (9) and allow fuel to drain. 2. Remove tiedown strap (1) from fuel pump lead (13) and dipstick tube (2). Discard tiedown strap (1). 3. Disconnect fuel pump lead (13) from control box lead (12). 4. Remove two locknuts (11), washers (3), capscrews (4), washers (3), fuel pump (6), and ground terminal (5) from capacitor clamp (14) and bracket (10). Discard locknuts (11). 5. Remove elbow (7) and fitting (9) from fuel pump (6). 1. Install elbow (7) and fitting (9) on fuel pump (6). 2. Install fuel pump (6) on bracket (10) and capacitor clamp (14) with ground terminal (5), two washers (3), capscrews (4), washers (3), and locknuts (11). 3. Connect two fuel lines (8) to elbow (7) and fitting (9). 4. Connect fuel pump lead (13) to control box lead (12) and install fuel pump lead (13) on dipstick tube (2) with tiedown strap (1). b. Installation a. Removal TM 9-2320-280-20-3 11-286 Change 2