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♦ Take measurements at 3 positions in both lateral direction
-A- and longitudinal direction -B-.
♦ Deviation from nominal dimension max. 0.08 mm
Note
The cylinder bores must not be measured when the cylinder block
is mounted on assembly stand, as measurements may then be
incorrect.
3.3.1
Installing piston
Piston and cylinder dimensions
⇒ page 43
.
Special tools and workshop equipment required
♦ Piston fitting tool - T10147-
Note
If a new piston fitting tool is used to install the pistons, first pass
piston with oiled piston rings twice through the tool and remove
any resulting metal shavings, if necessary. Only then install piston
with piston rings.
Procedure
– Push piston into oiled piston fitting tool - T10147- by hand. Low
point of piston crown must face lug on the piston fitting tool
-arrow-.
– Hold piston fitting tool - T10147- (with piston inserted) on upper
edge and press piston in with both thumbs.
– Push piston in until it protrudes approx. 15 mm from the lower
edge of the piston fitting tool.
– Place piston in respective cylinder bore. Lug on fitting tool
-arrow- must face centre of cylinder block.
– Hold fitting tool tightly against cylinder block and push piston
in.
3.4
Piston and cylinder dimensions
Honing dimen‐
sion
Piston ∅
Cylinder bore ∅
Basic dimension
mm
83.965
84.010
Phaeton 2003 ➤
6-cylinder injection engine - Edition 02.2014
3. Pistons and conrods
43
