12-26. ARCTIC HEATER FUEL PUMP REPLACEMENT
This task covers:
M966, M966A1, M996, M996A1, M997,
M997A1, M997A2, M998, M998A1, M1025,
M1025A1, M1025A2, M1037, M1038, M1038A1,
General mechanics tool kit:
automotive (Appendix B, Item 1)
Sealing compound (Appendix C, Item 44)
Two locknuts (Appendix G, Item 58)
Lockwasher (Appendix G, Item 124)
Battery ground cable disconnected (para. 4-73).
General Safety Instructions
Do not perform this procedure near fire, flames,
Diesel fuel is highly flammable. Do not perform this procedure
near fire, flames, or sparks. Severe injury or death will result.
Cover or plug all open hoses and connections immediately after
disconnection to prevent contamination. Remove all covers or
plugs prior to connection.
Have drainage container ready to catch fuel.
Prior to removal, tag leads for installation.
Fuel pump is located under right rear passenger seat floor
Disconnect lead 402A (13) from wiring harness lead (14).
Disconnect pump-to-tank fuel supply line (11) from connector (12).
Remove connector (12) from fuel pump inlet (11.1).
Proceed to step 5 for M996, M996A1, M997, M997A1, M997A2,
M998, M998A1, M1038, and M1038A1 models only. Perform step 4
for all other models.
Remove cap (7) and connector (6) from fuel pump tee (5).
Remove fuel supply line (8) and connector (6) from fuel pump tee (5).
Disconnect tube assembly (10) from connector (9).
Remove connector (9) from fuel pump tee (5).
Remove two locknuts (17), washers (2), ground lead 416A (16), lockwasher (15), clamp (18), two
capscrews (3), washers (2), and fuel pump (4) from mounting bracket (1). Discard locknuts (17) and
Remove fuel pump tee (5) from fuel pump outlet (4.1).
Inspect connectors (6), (9), and (12) for damaged threads or cracks. Replace if cracked or damaged.