Volkswagen Amarok 2011, Руководство по ремонту

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❑ Mark installation position and cylinder number.
❑ Arrow on piston crown points to belt pulley end.
❑ Install using piston ring clamp.
❑ Piston and cylinder dimensions
⇒ page 39 .
❑ Checking cylinder bores ⇒ page 38 .
9 - Compression rings
❑ Offset gaps by 120°.
❑ Use piston ring pliers to remove and install.
❑ „TOP“ or „R“ marking must face upwards towards piston crown.
❑ Checking ring gap
⇒ page 37 .
❑ Checking ring-to-groove clearance ⇒ page 37 .
10 - Oil scraper ring
❑ 2 parts
❑ Install such that upper steel band ring gap is offset by 120° relative to adjacent compression ring
❑ „TOP“ or „R“ marking must face upwards towards piston crown.
❑ Offset gaps of individual parts of oil scraper ring.
❑ Checking ring gap
⇒ page 37 .
❑ Ring-to-groove clearance cannot be checked.
11 - Conrod
❑ Renew as set only.
❑ Mark with cylinder number -A-.
❑ Installation position: Marking -B- faces towards pulley end.
❑ Separating new conrod
⇒ page 39 .
Checking piston ring gap
– 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
dimensions in mm
New Wear limit
compression ring 0.20...0.40 0.80
Oil scraper ring 0.25...0.50 0.80
Checking ring-to-groove clearance
– Clean annular groove of piston before check.
Piston ring
dimensions in mm
New Wear limit
1st compression ring 0.06 … 0.09 0.20
2nd compression ring 0.03 … 0.06 0.15
Oil scraper rings Not measurable
Amarok 2011 ➤
4-cylinder injection engine (2.0 l direct injection engine, turbocharger) - Edition 02.2011
3. Pistons and conrods
37