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Home >> Volvo >> 1982 >> 245 GL, 2.4L Eng VIN 77, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Specifications >> Tune-Up - Diesel >> Valve Clearance

Valve Clearance

  1. Turn engine using wrench on crankshaft pulley until No. 1 cylinder is at TDC on compression stroke. Remove valve cover. Both cam lobes should point upwards at equal angles.
  2. Check valve clearance for No. 1 cylinder. If not correct, turn crankshaft 1/4 turn ATDC (so valves will not hit piston top). Depress cam followers with compression tool (5196). Using special pliers (tool 5195), remove disc. Calculate thickness of disc needed, coat with oil, and install.
    NOTE: New discs are available in thicknesses from 0.130" (3.30 mm) to 0.167" (4.25 mm) in increments of 0.002" (.05 mm). New discs should be positioned with marks down.
    VALVE CLEARANCE SPECIFICATIONS

    Application Clearance In. (mm)
    Checking
      Cold
        Intake .006-.010 (.15-.25)
        Exhaust .014-.018 (.35-.45)
      Warm
        Intake .008-.012 (.20-.30)
        Exhaust .016-.020 (.40-.50)
    Adjustment
      Cold
        Intake .008 (.20)
        Exhaust .016 (.40)
      Warm
        Intake .010 (.25)
        Exhaust .018 (.45)
  3. Check valve clearance on remaining cylinders, proceeding in firing order. Be sure to check valve clearance at TDC and turn 1/4 turn after TDC before depressing valves.
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