Cylinder Block -- Repair |
- HINT:
- 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.
| 1. BORE CYLINDER |
Prepare 4 new O/S pistons.
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):
- 95.471 to 95.481 mm (3.7587 to 3.7591 in.)
- Distance:
- 13.8 mm (0.543 in.)
Text in Illustration *a Distance
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Calculate the amount each cylinder is to be rebored as follows.
- HINT:
- Size to be rebored = P + C - H
P = Piston diameter
C = Piston oil clearance: 0.009 to 0.048 mm (0.000354 to 0.00189 in.)
H = Allowance for honing: 0.02 mm (0.000787 in.) or less
Bore and hone the cylinders to the calculated dimensions.
- NOTICE:
- Excess honing will destroy the finished roundness.
Using a cylinder gauge, measure the cylinder bore diameter and calculate the honing allowance.
- HINT:
- Honing allowance = cylinder bore diameter - (piston diameter + oil clearance)
Finish the cylinder bore using the calculated value.
Using a cylinder gauge, measure the cylinder bore diameter.
- Standard oil clearance:
- 0.009 to 0.048 mm (0.000354 to 0.00189 in.)
Text in Illustration *a Thrust Direction *b Axial Direction 
Front
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