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Inspect wear and scratch on inner wall of cylinder.
Attention:
Measure cylinder ID at three positions, i.e. upper,
intermediate and lower positions. The position forms
a 90° angle with piston pin.
Allowable limit: Φ60.063mm
Measure the clearance between cylinder and piston.
Take the maximum clearance as standard.
Allowable limit: 0.07mm
Measure the roundness of cylinder inner wall
(internal diameter difference between X direction
and Y direction).
Allowable limit: 0.01mm
Measure the cylindricity of inner wall of cylinder
(internal diameter difference of three positions
(upper, intermediate and lower) along X direction or
Y direction).
Allowable limit: 0.01mm
Check flatness of cylinder surface.
Allowable limit: 0.05mm
Testing
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