Cylinder Block Assembly: Testing and Inspection

Pistons and Cylinder Bore, Checking

Piston Ring Gap, Checking





Special tools, testers and auxiliary items required

• Feeler Gauge

- Insert the ring at a right angle from above, to the lower end of cylinder approximately 15 mm from the cylinder edge.






Piston Ring Groove Clearance, Checking





Special tools, testers and auxiliary items required

• Feeler Gauge

- Clean the groove in the ring before checking.






Piston, Checking





Special tools, testers and auxiliary items required

• Micrometer 75-100 mm (VAS 6071)

- Take the measurement approximately 10 mm from the lower edge of the piston skirt and offset 90° to the piston axis.

Deviation from nominal dimension: Max. 0.04 mm

Cylinder Bore, Checking





• The cylinder bore must not be measured if the cylinder block is secured to the engine stand with the engine lateral bracket (T03001) , or else results may be incorrect.

Special tools, testers and auxiliary items required

• Cylinder Gauge (VAS 6078)

- Measure diagonally at 3 positions transversely - A - and longitudinally - B -.

Deviation from nominal size: Max. 0.08 mm.

Piston and Cylinder Reconditioning Dimension






• 1 The measurement does not include the graphite coating, which is 0.02 mm thick. The graphite coating wears off.