Note. Rebore all cylinders to the same oversize (for oversized pistons). Install piston rings also of the same repair size corresponding to the repair size of the pistons.
1. Select oversize pistons.
Repair (0,50) piston diameter:
- 3S-FE - 86.365 - 86.395 mm
- 4S-FE - 82.937-82.967 mm
- ZS-T - 86.378 - 86.408 mm
- Repair (0,75) piston diameter: 4S-FE - 83.187-83.217 mm
2. Calculate the repair size for boring cylinders.
A) Using a micrometer, measure the piston diameter at a right angle to the axis of the piston pin at a height of 26.0 mm (3S-FE, 4S-FE), 31 (95 mm (ZS-T) from the plane of the piston crown.
b) Calculate the cylinder bore diameter.
The size to which the cylinder needs to be bored \u003d P + C - Fi
- P = piston diameter, mm
- C = clearance between the piston
and cylinder
- 3S-FE, 4S-FE - 0.125 - 0.145 mm
- ZS-T - 0.112-0.132 mm
H - honing allowance - 0.02 mm or less
3. Rebore and honing the cylinder to the required dimensions.
Maximum honing tolerance - 0.02 mm