БЛОК ЦИЛИНДРОВ РЕМОНТ

CAUTION / NOTICE / HINT

Tech Tips


  • Bore all 4 cylinders to fit the O/S piston outside diameter.

  • Replace all the piston rings with ones to match the O/S pistons.

PROCEDURE


  1. BORE CYLINDER


    1. Prepare 4 new O/S pistons.

    2. A01L8YPC01
      *a Distance

      Using a micrometer, measure the piston diameter at right angles to the piston center line where the distance from the piston end is as specified.

      Standard piston diameter (O/S 0.50)
      86.451 to 86.486 mm (3.4036 to 3.4050 in.)
      Distance
      11.4 mm (0.449 in.)

    3. Calculate the amount each cylinder is to be rebored as follows.

      Size to be rebored = P + C - H
      P Piston diameter
      C Piston oil clearance: 0.004 to 0.052 mm (0.000157 to 0.00205 in.)
      H Allowance for honing: 0.02 mm (0.000787 in.) or less

    4. Bore and hone the cylinders to the calculated dimensions.

      Maximum honing
      0.02 mm (0.000787 in.)

      Note

      Excess honing will destroy the finished roundness.

    5. Using a cylinder gauge, measure the cylinder bore diameter and calculate the honing allowance.

      Tech Tips

      Honing allowance = cylinder bore diameter - (piston diameter + oil clearance)

    6. Finish the cylinder bore using the calculated value.

    7. A01L9L1C05
      *a Thrust Direction
      *b Axial Direction
      *c 10 mm (0.394 in.)
      *d 70 mm (2.76 in.)
      B0027PX Front

      Using a cylinder gauge, measure the cylinder bore diameter.

      Standard oil clearance
      0.004 to 0.052 mm (0.000157 to 0.00205 in.)