Piston - Kohler KD 625/2 Workshop Manual

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Class
A
B
C
* In case of diameter wear above 0.05 mm replace piston and piston rings.
** In case wear exceeds 0.10 mm, bore the cylinder and fit oversize piston and rings.
In case of less wear replace piston rings only.
Note: Oversize pistons of 0.5 and 1 .0 mm are available (only for standard and 97/68 CE engines).
Important
The cylinder heads must be tightened with the exhaust or intake manifold mounted to keep them lined up.
The cylinder and piston must be replaced with a new cylinder and piston of the same class.
KD 625-2 Workshop Manual_cod. ED0053029380_1° ed_ rev. 00
Measure diameter size between two diametrically opposed points at
three different heights.

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PISTON

Remove circlips and remove piston pin.
Remove piston rings and clean grooves.
Measure diameter at 17 mm from the bottom of skirt.
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Table "Piston and cylinder types and sizes"
Ø Piston (mm)
9
4 9 . 2 ÷ 9 4 9 . 3 *
4 9 . 3 ÷ 9 4 9 . 4 *
9
9
4 9 . 4 ÷ 9 4 9 . 5 *
Disassembly / Reassembly
As per the cylinder sizes, see Table "Piston and cylinder types
and sizes".
Ø Cylinder (mm)
9 5 0 . 0 ÷ 9 5 0 . 1 *
9 5 0 . 1 ÷ 9 5 0 . 2 *
9 5 0 . 2 ÷ 9 5 0 . 3 * *
Clearance (mm)
0 0 . 7 ÷ 0 0 . 9
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