TM-9-2350-274-BD M109 Battlefield Damage Assessment and Repair Download
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TM 9-2350-274-BD ENGINE 3-12. 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 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. TABLE 3-1. Substitutable Injectors ENGINE 3-53 4-53 6V-53 6V-53T 8V-71 8V-71T INJECTOR M50 N-70 7E50, 7E55, 7E60, 71C5, 7E65, 71B5, B55, B60, B65, M65, 7C70, 7C75, N70, N85, N75, 9092,9090 USED IN Gama Goat Commercial M113F.O.V., Commercial, T.R.Forklifts M551Sheridan Power Generation M109, M110, M107, M108S.P.Howitzer, M578 Recovery Vehicle ❚ Change 3 3-15