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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 6.2L V8 Diesel - VINS [C,J] >> Removal & Installation >> Cylinder Head >> Removal (All Models Except Van)

Removal (All Models Except Van)

  1. Remove intake manifold as previously described. Remove injection line clips from brackets. Remove injection lines from injector nozzles. Remove injection lines at injection pump and mark for reassembly reference. Remove fuel supply line from injection pump.
  2. Seal injection lines, nozzles and fuel injection pump openings. Remove wiring harness and bracket from engine. Drain coolant. Remove dipstick tube for left cylinder head removal. Disconnect ground wire from cowl at right side of engine.
  3. Raise vehicle. Disconnect exhaust pipe from manifold. Lower vehicle. Remove A/C compressor (if equipped) for left cylinder head. DO NOT disconnect refrigerant lines.
  4. Remove alternator and disconnect glow plug wires. Remove glow plug relay (if required). Remove rocker arms and push rods. See ROCKER ARM under REMOVAL & INSTALLATION. Disconnect radiator, heater and by-pass hoses. Disconnect ground strap.
  5. Remove thermostat crossover and thermostat housing. Remove head bolts and cylinder head. On left cylinder head removal, rear head bolt may need to remain in cylinder head during removal.
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