TM-9-2320-272-23-1

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5

SEPTEMBER 2012

  TM-9-2320-272-23-1 - Page 340 of 1313

ENGINE IDLE ROUGH OR ERRATIC - Continued
STEP
2.
ARE INJECTOR TUBES FREE OF PLUGS?
a.
Remove one injector tube.
T0889DAA
Fuel Injector
Supply Lines
Figure 2.
Injector Tubes.
b.
Check injector tube for plugged condition.
c.
Repeat previous test for other injector tubes.
CONDITION/INDICATION
ARE INJECTOR TUBES FREE OF PLUGS?
DECISION
YES - Notify supervisor. It is possible that another troubleshooting work package applies.
NO - Tighten/replace injector tubes (Volume 2, WP
0241). Go to Step (3) to verify problem is solved.
TM 9-2320-272-23-1
0013
0013-3


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