TM-9-2350-358-BD
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A6
TECHNICAL MANUAL; OPERATOR’S, UNIT, AND DIRECT SUPPORT SUPPORT MAINTENANCE
MARCH 1994
TM-9-2350-358-BD - Page 99 of 343
TM 9-2350-358-BD
4-5
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ENGINE SUBSTITUTIONS - CONTINUED
Option 4: MODEL
7083-7399
LEFT REAR VIEW
RIGHT FRONT VIEW
4-6.
INJECTOR FAILURE
General Information:
Fuel injector failure should be noticeable through a loss of power or excessive smoke.
Within the Detroit Diesel family of
engines the injectors are physically interchangeable, although their operating characteristics differ for the engine
configuration they are designed for injectors should be exchanged in full sets, if possible, to keep engine operation
balanced between cylinders, however, single replacement is possible.
The defective injector can be located by following
this procedure.
Assessment Steps:
1
Remove the valve covers.
2
Start engine.
3
Press firmly on injector guide follower of each injector.
4
Listen for a change in engine operation, if a change is noticed the injector is functioning.
5
If no change in operation is noted, the injector is not functioning.
6
Change injector at defective cylinder with an available injector.
4-7
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