Test sequence
Clean annular groove before check.
Piston ring
Clearance
New Wear limit
Rectangular-section ring mm 0.04 … 0.06 0.12
Taper faced Napier ring mm 0.03 … 0.06 0.15
Oil scraper ring mm 0.02 … 0.06 0.15
Checking piston:
Special tools and workshop equipment required
♦ Micrometre 75 - 100 mm - VAS 6071-
Test sequence
– Measure pistons approx. 15 mm from the lower edge of skirt,
at 90° to the piston pin axis.
Deviation from nominal dimension: max. 0.06 mm
Checking cylinder bores:
Special tools and workshop equipment required
♦ Cylinder gauge - VAS 6078-
Test sequence
– Take measurements at 3 positions in both lateral direction
-A- and longitudinal direction -B-.
• Deviations from nominal dimension: 0.08 mm
Piston ∅ Cylinder bore ∅
Basic dimension mm 88.945 89.010
Note
Cylinder bores must not be measured when cylinder block is
mounted on engine and gearbox support - VAS 6095- , as meas‐
urements may be incorrect.
4.4 Separating new conrod
On a new conrod, it is possible that the breaking point has not
fully separated. Proceed as follows if the conrod bearing cap can‐
not be removed by hand:
CC 2012 ➤ , Passat 2011 ➤ , Passat Variant 2011 ➤
6-cylinder direct-injection engine (3.6 l engine, 4V) - Edition 06.2019
56 Rep. gr.13 - Crankshaft group
To Next Page
Loading...
Need help?
General
