1. Cylinder block inspection
1. Cleaning
1) Carefully remove the liquid gasket, water stains, or foreign material on the top surface of the cylinder block.
Caution
- Do not damage the cylinder block.
2. Visual inspection
1) Inspect the cylinder block for the following.
- Cracking
- Damage
Note
- Conduct the dye penetrant check and hydraulic (or pneumatic) test as necessary.
- If cracks or other damage is found, replace the cylinder block.
3. Cylinder block upper face warpage measurement
1) Remove the dowel pin from the cylinder block.
2) Measure the 4 sides and 2 locations in a diagonal line of the cylinder block top surface using a simple straight ruler and feeler gauge.
Note
- If the measured value exceeds the limit, replace the cylinder block.
Standard: 0.05 mm or less { 0.0020 in or less }
Limit: 0.075 mm { 0.0030 in }
Legend
- Simple straight ruler
- Feeler gauge
4. Cylinder block inner diameter measurement
1) Measure the inner diameter of the cylinder bore in the thrust direction and radial direction at the specified positions using a cylinder gauge.
Legend
a. Thrust direction
b. Radial direction
Measurement position
c: 20 mm { 0.787 in } From the top surface of the cylinder block
2) Calculate the average of the measured values.
Standard: 95.421 to 95.450 mm { 3.7567 to 3.7579 in }
Limit: 95.480 mm { 3.7590 in }
Note
- If the measured value exceeds the limit, replace the cylinder block.