Zontes ZT310M 2022, Руководство по обслуживанию

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Inspection
1. Check for scratches and wear on the inner wall of the cylinder.
Measure and record the cylinder inner diameters of the three horizontal
planes in the X and Y axis directions respectively.
The largest reading is used to judge whether the cylinder is worn or not.
Maintenance limit value: 72.055 mm (2.8368 in)
2. Measure and record the cylinder inner diameters of the three horizontal
planes respectively in the X and Y axis directions.
Take the largest reading to judge the outer roundness of the cylinder.
Maintenance limit value:
Flatness: 0.05 mm (0.002 in)
Outer roundness: 0.05 mm (0.002 in)
Note: If the cylinder block exceeds the maintenance limit value, a
new cylinder block must be replaced. If a new cylinder block is
replaced, please calculate the fit gap between the piston and the new
cylinder block. If the fit gap between the old piston and the new
cylinder exceeds the maintenance limit value, then The piston also needs to be replaced.
Piston and cylinder block maintenance limit value: 0.15 mm (0.0059 in)
3. As shown in the figure, place a ruler and a plug gauge between the two holes of the cylinder to check whether the
cylinder is twisted.
Maintenance limit value: 0.05 mm (0.002 in)
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