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Home >> GMC >> 1995 >> Forward Control 4.3 Z, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> Engine Mechanical 6.5L Turbo Diesel - VIN [F] >> Removal & Installation >> Timing Chain & Sprockets >> Removal

Timing Chain & Sprockets: Removal

  1. Disconnect batteries. Drain the coolant. Remove the water pump and plate. See WATER PUMP  . Remove intake manifold. Refer to INTAKE MANIFOLD  .
  2. Remove crankshaft pulley bolts and pulley. Remove crankshaft damper bolt and washer. Using Damper Puller (J-39046), remove crankshaft damper. Pry front cover oil seal.
  3. Rotate crankshaft until mark on crankshaft damper aligns with "0" mark on timing tab with injection pump gear-to-camshaft gear timing marks aligned. See Figure . Remove injection pump gear-to-injecti on pump bolts. Remove injection pump gear.
  4. Remove baffle. Scribe mark injection pump flange in relation to front cover (if unmarked). Remove injection pump mounting nuts. Pull pump from front cover and lay on cylinder block. Remove oil pan-to-front cover bolts and front cover-to-cylinder block bolts.
  5. Remove front cover. Measure timing chain free play. See Timing Chain Free Play. Remove camshaft gear from camshaft sprocket. See Figure . Note alignment of timing marks on crankshaft and camshaft s prockets. Remove camshaft sprocket and timing chain. Remove crankshaft sprocket (if necessary).
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