Volkswagen Phaeton 2003, Руководство по ремонту

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– Push ring at right angles from above down to approx. 15 mm
from bottom end of cylinder. Push in using a piston without
rings.
Piston ring Ring gap
New Wear limit
Rectangular-section ring mm 0.20...0.40 1.0
Tapered stepped ring mm 0.20...0.40 1.0
Oil scraper ring mm 0.25...0.50 1.0
Checking ring-to-groove clearance
Special tools and workshop equipment required
♦ Feeler gauges
Clean annular groove before check.
Piston ring Clearance
New Wear limit
Rectangular-section ring mm 0.04...0.09 0.15
Tapered stepped 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-
Measure approx. 6 mm from lower edge of skirt, at 90° angle to
piston pin axis.
Deviation from nominal dimension max. 0.04 mm
Checking cylinder bores
Special tools and workshop equipment required
♦ Cylinder gauge - VAS 6078-
Test procedure
Phaeton 2003 ➤
6-cylinder injection engine - Edition 02.2014
42
Rep. gr.13 - Crankshaft group