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129
Measure the outer diameter of the piston pin
Limit for use: 11.96mm.
clearance between the piston pin holr an the piston pin
Limit for use:0.02mm.
Measure the outer diameter of the piston.
Note:
The measuring point shall be at 90°with the piston pin,
and at 11.5mm below the piston skirt.
Limit for use:39.9mm.
Check whether cylinder inner wall is scratched or abraded.
Note:
It is at 90 degree with the piston pin. Measure the inner
diameter of the cylinder at the top, middle and bottom points.
Limit for use: 40.05mm.
Measure the maximum clearance between the cylinder and
the piston.
Limit for use: 0.1mm.
Measure the roundness of the inner wall of the cylinder
(inner diameter difference at X direction and Ydirection).
Limit for use: 0.05mm.
Measure the cylindricity of the inner wall of the cylinder
(inner diameter difference at the top, middle and bottom
points of X direction and Y direction).
Limit for use: 0.05mm.
上:
UP
中:
MIDDLE
下:
DOWN
1
2
3
90°
11.5mm
Tester
90°