TM 9-2350-256-20
CHAPTER 2: VEHICLE MAlNTENANCE INSTRUCTIONS
2 - 1 6 . 1 M E C H A N I C A L T R O U B L E S H O O T I N G - C o n t i n u e d
F U E L , A I R I N T A K E , A N D E X H A U S T S Y S T E M S - C o n t i n u e d
G Remove left- and center-front air inlet grilles (see
paragraph 9-57). Have an assistant move manual
fuel shutoff handle in and out. If manual fuel shutoff
linkage on front of engine does not move, replace
fuel shutoff control cable assembly (see paragraph 4-
11). If manual fuel shutoff linkage on front of engine
moves, do the following: Remove engine deck (see
paragraph 9-51). Remove forward engine cooling fan
(see paragraph 5-2). While assistant moves manual
fuel shutoff handle in and out, observe manual fuel
shutoff lever on side of fuel injector pump for
movement. If manual fuel shutoff lever does not
move, replace manual fuel shutoff lever (see
paragraph 4-11).
H
Open exhaust deflector doors and inside deck doors.
Check exhaust outlets and exhaust pipes for damage
and restrictions. Remove any restrictions. Repair or
replace damaged parts.
I
Inspect air intake hoses and tubes for damage and
restrictions. Remove any restrictions. Repair or
replace damaged parts.
J
Remove left- and center-front air inlet grilles (see
paragraph 9-57). Have assistant move accelerator
pedal to full throttle position. Observe throttle
linkage on front of engine. If throttle linkage does
not have full travel, adjust throttle linkage (see
paragraph 9-79).
K
Check fuel return line (see paragraph 4-6) on front of
engine for proper connection.
L
With MASTER switch and m-tank fuel pump switch
in ON position, electric fuel pump will make a noise.
If there is no noise, troubleshoot electric fuel pump
circuit (see paragraph 2-19). If there is a noise,
perform the following fuel flow test. Disconnect fuel
tank supply hose at engine primary fuel filter.
Remove quick-disconnect. Place a 5-gal (19-L)
container in a suitable position to collect fuel from
hose. Turn MASTER and m-tank fuel pump switches
to ON position. Time fuel flow into container. If
there is no fuel flow or fuel flow is less than 3 gpm
(11 Lpm), inspect fuel lines for restrictions. If there is
no fuel line restriction, replace electric fuel pump
(see paragraph 4-3).
2-40.6
Change 1