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Home >> Isuzu >> 1985 >> Impulse 2.0 F, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.8L 4-CYL - VIN [B], 1.9L 4-CYL [A], 2.0L 4-CYL [F] >> Removal & Installation >> Rocker Arm Shaft Assembly >> Inspection

Rocker Arm Shaft Assembly: Inspection

  1. Place rocker arm shaft on "V" blocks and check runout at center of shaft. Maximum runout should not exceed .008" (.20 mm). A slight amount of runout can be corrected with a press. DO NOT  apply heat. Replace shaft if runout is greater than .016" (.41 mm).
  2. Measure rocker arm shaft diameter at 4 rocker arm locations. Replace shaft if diameter is less than .801" (20.35 mm). Measure inside diameter of rocker arms. If clearance is greater than .008" (.20 mm), replace either rocker arms or shaft. Replace rocker arms if valve stem contact area is scored or worn.
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