Cylinder Block Assembly: Testing and Inspection
Piston and Cylinder Bore, Checking
Pistons, Checking
- Measure approximately 15 mm from the lower edge at a 90° angle to the piston pin axis using a 75 to 100 mm external micrometer.
• Maximum deviation from nominal dimension: 0.04 mm.
Measuring the Piston Ring Gap
- Push the piston ring squarely from above down to approximately 15 mm from the bottom end of the cylinder.
- Use a piston without a piston ring for sliding in.
Measuring the Ring to Groove Clearance
- Clean the piston ring groove before checking.
Measuring Cylinder Bore
Special tools, testers and auxiliary items required
• Internal Dial Gauge (VAS 6078) or Inside Micrometer Set 18-100 mm (US1033/S)
- Using a cylinder gauge (VAS 6078) measure in a diagonal sequence at 3 positions transversely - A - and longitudinally - B -.
• Maximum deviation from nominal dimension: 0.08 mm.