Engine Unit -- Repair |
| 1. BORE CYLINDER |
- HINT:
- Bore all 4 cylinders for the O/S piston outside diameter.
- Replace all the piston rings with ones to match the O/S pistons.
Prepare 4 new O/S pistons.
- Standard Piston Diameter:
- 92.42 to 92.45 mm (3.6386 to 3.6398 in.)
Using a micrometer, measure the piston diameter according to the following conditions: 1) measure at a right angle to the piston center line, and 2) measure at the indicated distance from the piston head.
- Distance:
- 65 mm (2.56 in.)
Text in Illustration *1 Size Mark *2 Piston Pin Hole Inside Diameter Mark *3 Front Mark (Arrow) *4 Distance
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Calculate how much each cylinder needs to be rebored:
- Size to be rebored:
- Size to be rebored = P + C - H
- P = Piston diameter
- C = Piston clearance: 0.07 to 0.09 mm (0.00276 to 0.00354 in.)
- H = Allowance for honing: 0.02 mm (0.000787 in.) or less
Bore and hone the cylinders to the calculated dimensions.
- Maximum honing:
- 0.02 mm (0.000787 in.)
- NOTICE:
- Excess honing will destroy the finished roundness.