volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Cylinder Head Assembly > < Engine - Metallic Clicking Noise|Page 1389
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Piston Ring: Specifications

Piston Ring End Gaps [1]:

Top compression ring:

New ......................................................................................................................................................................  0.30-0.45 mm (0.012-0.018 in.)
Wear limit .................................................................................................................................................................................  1.0 mm (0.039 in.)

Bottom compression ring:

New ......................................................................................................................................................................  0.30-0.45 mm (0.012-0.018 in.)
Wear limit .................................................................................................................................................................................  1.0 mm (0.039 in.)

Oil scraper ring:

New ......................................................................................................................................................................  0.25-0.45 mm (0.010-0.018 in.)
Wear limit .................................................................................................................................................................................  1.0 mm (0.039 in.)

Piston Ring Side Clearances [2]:

Compression rings:

New ..................................................................................................................................................................  0.02-0.05 mm (0.0008-0.0019 in.)
Wear limit .............................................................................................................................................................................  0.15 mm (0.0059 in.)

Oil scraper ring:

New ..................................................................................................................................................................  0.02-0.05 mm (0.0008-0.0019 in.)
Wear limit .............................................................................................................................................................................  0.15 mm (0.0059 in.)

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[1]:  Piston ring end gaps are checked with the piston rings inserted approximately 15 mm (5/8 in.) from the top of the cylinder.
[2]:  Piston ring side clearance is checked using feeler gauges. Piston ring grooves should be thoroughly cleaned before checking ring side clearance.
Measure each ring in its original groove.

Cylinder Head Assembly > < Engine - Metallic Clicking Noise|Page 1389