Allocation Of Conrod Bearing Shells; Measuring Piston Projection At Tdc - Audi A8 2003 Workshop Manual

8-cylinder TDI engine (4.2 ltr. 4-valve common rail), mechanics - Edition 12.2013
– When carrying out final assembly, renew bolts.
5.5

Allocation of conrod bearing shells

New conrod bearing shells are colour coded and may only be
fitted as a pair as follows:
Type of pair
Bearing shell for conrod
Bearing shell for conrod bear‐
ing cap
5.6

Measuring piston projection at TDC

Note
Piston projection at TDC must be measured when installing
♦
new pistons or a short engine. Depending upon piston projec‐
tion, install the corresponding cylinder head gasket according
to the table below:
If the measured values for piston projection are not the same
♦
for all pistons, use the highest value to determine the correct
gasket size.
The cylinder head gasket must be determined separately for
♦
each cylinder bank.
I II III
Yellow Blue Red
Yellow Red Blue
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5. Dismantling and assembling pistons and conrods
Audi A8 2003 ➤
103