TM 5-3895-379-23
FUEL INJECTOR AND NOZZLE REPLACEMENT (CB534B)
THIS WORK PACKAGE COVERS
Test, Removal, Installation
INITIAL SETUP
References
Tools and Special Tools
Tool kit, general mechanic's (Item 36, WP 0220 00)
TM 5-3895-379-23P, Figure 17
Shop equipment, general purpose (Item 30, WP
TM 5-3895-379-10
Equipment Condition
Materials/Parts
Operator platform assembly raised (WP 0128 00)
Cap set, protective (Item 8, WP 0219 00)
Fuel injector lines removed (WP 0029 00)
Washer
FUEL INJECTOR NOZZLE TEST
NOTE
Perform the following procedures in order to determine if a fuel injector nozzle is working correctly.
1.
Run the engine at low idle (TM 5-3895-379-10).
NOTE
If leakage occurs at the nut for the fuel supply line, make sure that the fuel supply line and the nut for the
fuel supply line are correctly aligned with the inlet connection of the fuel injector nozzle.
2.
Loosen the nut (1) for the fuel supply line (3) at each
1
3
2
fuel injector nozzle (2).
(HIDDEN)
NOTE
Listen for low idle to decrease or become
rough at each engine cylinder.
3.
The fuel injector nozzle (2) is faulty and should be
replaced when the fuel supply line (3) is loosened
and the following events occur:
The engine rpm does not
decrease.
4
401-2158
The engine does not idle
roughly.
CAUTION
Do not over-tighten the nut for the fuel
supply line. If the nut is tightened more,
the fuel line may become restricted or
the threads of the fuel injector nozzle and
the nut may be damaged.
4.
Tighten each nut (1) to 14.7 lb-ft (20 Nm).
