PAN GP-OIL 5038037 - Caterpillar

Illustration 1 g00609103
(1) Rack control (2) No. 1 injector
Crank the engine and push the rack control (1) toward the governor so that a rack position of approximately 10 mm (0.39 inch) is indicated. If the engine does not start, investigate other engine systems before suspecting worn unit injectors as the cause of the problem. Replace all the unit injectors if the engine is easier to start with an increased rack position. Ream the injector sleeves if the seat area for the injector is pitted. Replace the injector sleeves, if necessary. Refer to Tool Operating Manual, NEHS0738, "Using the Injector Seating Tool " and Tool Operating Manual, NEHS0610, "Using the 128-8822 Tool Group on 3114, 3116, and 3126 Engines with Mechanical Unit Injectors (MUI)". Also, refer to Video Tape, LEVN4032, "Troubleshooting Guide for the 3100 Family of Diesel Engines" and Video Tape, LEVN4732, "Injector Seating Procedure". Caterpillar High Efficiency fuel filters are recommended in order to prolong the life of the unit injectors.