Volkswagen CC 2012, Руководство по ремонту

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4 Pistons and conrods
⇒ “4.1 Assembly overview - pistons and conrods”, page 51
⇒ “4.2 Removing and installing pistons”, page 52
⇒ “4.3 Checking pistons and cylinder bores”, page 55
⇒ “4.4 Separating new conrod”, page 56
4.1 Assembly overview - pistons and conrods
1 - Piston rings
❑ Offset gaps by 120°
❑ Use piston ring pliers to
remove and install.
❑ “TOP” faces towards
piston crown.
❑ Checking ⇒ page 55
2 - Piston
❑ Checking ⇒ page 55
❑ Mark cylinder number
and installation position
relative to conrod.
❑ The two deep valve
pockets in the piston
crown point to the centre
of the cylinder block.
❑ Installing piston
⇒ page 52 .
3 - Locking ring
❑ Ensure firm seating
4 - Connecting rod
❑ Renew as set only.
❑ Mark allocation to cylin‐
der
❑ Mark installation posi‐
tion
5 - Bearing shell
❑ Observe installation po‐
sition
❑ Do not interchange
used bearing shells.
❑ The lugs on bearing
shells must fit tightly in
the recesses.
❑ Axial clearance:
New: 0.05 … 0.31 mm
Wear limit: 0.40 mm
❑ Checking radial clearance with Plastigage:
New: 0.02 … 0.07 mm
Wear limit: 0.10 mm
❑ Do not rotate crankshaft when checking radial clearance
CC 2012 ➤ , Passat 2011 ➤ , Passat Variant 2011 ➤
6-cylinder direct-injection engine (3.6 l engine, 4V) - Edition 06.2019
4. Pistons and conrods
51