CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
Caution
The cylinder bore may not be worked on (reboring, honing,
grinding) may not be carried out using workshop tools! This will
damage the surface of the cylinder bore.
– Take measurements at 3 positions in both lateral direction
-A- and longitudinal direction -B-.
♦ Deviation from nominal dimension: max. 0.08 mm
Piston ∅
Cylinder bore ∅
82.51
1)
Basic dimension
mm
82.42
1)
•
Dimensions without graphite coating (thickness
0.02 mm). The graphite coating wears away.
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:
– Mark allocation of conrod to cylinder.
– Clamp conrod -1- in a vice below the dashed line using alu‐
minium vice clamps.
– Unscrew both bolts -2- about 5 turns.
– Using a plastic hammer, carefully knock against conrod bear‐
ing cap in -direction of arrow- until it is loose.
86
Rep. gr.13 - Crankshaft group
CC 2010 ➤ , Eos 2006 ➤ , Golf 2004 ➤ , Golf 2009 ➤ , Passat 2006 ➤ , ...
4-cyl. injection engine (1.8 and 2.0 l engine, chain drive) - Edition 08.2018
4.5
Checking radial clearance of conrods
Special tools and workshop equipment required
♦ Plastigage
Procedure
– Remove conrod bearing cap.
– Clean bearing cap and bearing journal.
– Place a Plastigage corresponding to the width of the bearing
on the journal or into the bearing shells.
– Fit conrod bearing cap and tighten it using old bolts
⇒ Item 1 (page 80) . When tightening, make sure not to rotate
crankshaft.
– Remove conrod bearing cap again.
– Compare width of Plastigage with the measurement scale.
Radial clearance:
•
•
New: 0.02 to 0.06 mm
Wear limit: 0.09 mm.
– Renew conrod bolts.
4. Pistons and conrods
87