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Home >> GMC >> 1986 >> Jimmy 6.2 C >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 5.0L (305") V8 - VIN [H] >> Adjustments >> Valve Clearance Adjustment

Valve Clearance Adjustment

  1. Rotate engine until No. 1 piston is on TDC at end of compression stroke. With piston in this position, adjust valves listed in the VALVE CLEARANCE ADJUSTMENT table, using the following procedure:
  2. Loosen rocker arm adjusting nut until play is felt in push rod. Tighten adjusting nut until play in push rod is removed. When play has been removed, tighten adjusting nut one full turn.
  3. Rotate crankshaft 360° to bring No. 6 piston on TDC at end of compression stroke. Adjust remaining valves listed in appropriate VALVE CLEARANCE ADJUSTMENT table.
VALVE CLEARANCE ADJUSTMENT (1)

Piston on TDC Adjust Int.Nos. Adjust Exh.Nos.
1 1, 2, 5, 7 1, 3, 4, 8
6 3, 4, 6, 8 2, 5, 6, 7
(1) Both Banks - E-I-I-E-E-I-I-E (Front-to-rear).
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