TM-9-2320-279-20-1
M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; ORGANIZATIONAL MAINTENANCE, VOLUME 1 OF 3
TM-9-2320-279-20-1 - Page 449 of 985
TM 9-2320-279-20-1
CHAPTER 4
FUEL SYSTEM MAINTENANC E
Contents
Para Page
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-1
Air Restriction Indicator Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-2
Air Filter Element Removal/Service/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-3
Air Intake Ducting Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-8
Air Cleaner Assembly Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4-11
Fuel Line and Air Vent Line Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-16
Fuel Tank and Brackets Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4-24
Engine Stop Solenoid Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4-31
Fuel-Water Separator Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4-32
Fuel-Water Separator Removal/Repair/Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4-33
Secondary Fuel Filter Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4-41
Ether Starting Aid Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
4-43
Throttle Treadle Valve Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4-47
Throttle TreadleValve Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4-48
ENGINE HIGH IDLE Pressure Regulator and Solenoid
Removal/Repair/Installation/Adjustment (M984) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4-51
Throttle Air Solenoid Check Valve Removal/Installation(M984). . . . . . . . . . . . . . . . . . . . . . . 4-16
4-55
Section I. INTRODUCTION
4-1. GENERAL.
This chapter contains maintenance instructions for removing, replacing, installing,
repairing, and testing the fuel system components authorized by the Maintenance Allocation Chart (MAC)
at the organizational maintenance level.
4-1
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