Allocation Of Crankshaft Bearing Shells For Retaining Frame Without Visible Colour Coding; Crankshaft Dimensions; Measuring Axial Clearance - Audi A8 2003 Workshop Manual

8-cylinder TDI engine (4.2 ltr. 4-valve common rail), mechanics - Edition 12.2013
Allocation of crankshaft bearing shells for retaining frame - ver‐
sion II
♦ Bearing shells of the correct thickness are matched to the
bearings in the retaining frame at the factory. Coloured dots
on the side of the bearing shells are used to identify the bear‐
ing shell thickness.
♦ The allocation of the bearing shells to the retaining frame is
indicated by letters on the front crankshaft web, as shown in
illustration. The "X" indicates the end of the row of letters and
is next to the colour coding for bearing 1 (pulley end).
Note
The row of letters begins on the left with bearing 5 (flywheel
♦
end).
Disregard -item A-.
♦
Letter on crankshaft
R =
G =
B =
4.3 Allocation of crankshaft bearing shells
for retaining frame without visible colour
coding
In some cases the colour coding of the crankshaft bearing shells
may no longer be visible. In this case the main bearing journals
must be measured to allocate the correct bearing shells.
Main bearing journal ∅
Dimensions (in mm)
Basic dimension 65
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4.4

Crankshaft dimensions

with respect to the correctness of information in this document. Copyright by AUDI AG.
Honing di‐ Crankshaft main
mension bearing journal ∅
(in mm)
Basic dimen‐ 65.000 – 0.022
sion
4.5

Measuring axial clearance

Special tools and workshop equipment required
Colour coding of bearing
Red
Yellow
Blue
Colour code of bearing shells for retaining frame
Red
64.978 ... 64.972
Crankshaft
conrod journal ∅
60.000 – 0.020
– 0.042
Yellow
64.972 ... 64.965
– 0.040
4. Removing and installing crankshaft
Audi A8 2003 ➤
Blue
64.965 ... 64.958
95