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Home >> Chevrolet >> 1998 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 4.3L V6, 5.0L, 5.7L & 7.4L V8 - VINS [W,X,M,R,J]) >> Engine Oiling >> Oil Pump >> Removal & Disassembly

Removal & Disassembly

WARNING: This page is about a different variant/trim than selected.
  1. Remove oil pan. See OIL PAN  under REMOVAL & INSTALLATION. Remove oil pump bolt. Remove pump and extension shaft. If necessary, on all engines except 7.4L, remove pick-up tube. Remove pump cover. Mark relationship between gears at a meshing point for reassembly. Remove gears. Remove pressure regulator valve retaining pin. Remove pressure regulator valve and spring. On 5.7L engine, remove crankshaft oil deflector nuts an d deflector. On all models, remove oil pump-to-rear crankshaft bearing cap bolt. Remove oil pump, retainer and driveshaft from rear crankshaft bearing cap.
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