Cylinder Block Assembly: Testing and Inspection

Piston, Rings and Cylinder Bore, Checking

Piston Ring Gap, Checking





Special tools, testers and auxiliary items required

• Feeler Gauge

- Insert the ring into the lower cylinder opening at a right angle from above, approximately 15 mm from the cylinder edge.





Piston Ring Groove Clearance, Checking





Special tools, testers and auxiliary items required

• Feeler Gauge

- Before measuring, clean the ring groove.





Piston, Checking





Special tools, testers and auxiliary items required

• External Micrometer 75 to 100 mm

- 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





Special tools, testers and auxiliary items required

• Internal Dial Gauge 50 to 100 mm

CAUTION!
Do not bore, hone, grind or rework the cylinder bores with workshop tools. Reworking damages the surface of the cylinder bore.

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

Deviation from nominal size: Max. 0.08 mm

• Cylinder bore measurement must not be performed if cylinder block is secured to the assembly stand using engine and transmission holder (VAS 6095), since inaccurate measurements are possible.