2000 AUDI A6 01E Transmission Final Drive Pinion And Ring Gear Adjustment Workshop Manual

39-170

- Turn ring gear back until lying against an
opposite tooth flank (backlash).

- Read backlash and note value.

-
Turn ring gear through 90 and repeat
measurements a further 3 times.
Note:
If the individual measurements differ by more
than 0.06 mm from each other, the installation of
the ring gear or the final drive set itself is not
correct. Check installation, replace final drive set
if necessary.

Determining average backlash

Example:

1st measurement 0.28 mm
+ 2nd measurement 0.30 mm
+ 3rd measurement 0.30 mm
+ 4th measurement 0.28 mm
= Sum of measured values 1.16 mm

Result: The average backlash is 1.16 4 =
0.29 mm
Pa
ge 33 of 38 Drive
pinion and rin
g gear, ad
justin
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11/19/2002 htt
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yp
e=re
pair&id=AUDI.B5.TM03.39.19

39-171

Determining thickness of shim "S2"

Formula:
"S2"
=
"S2*" - backlash + lift

Example:

Inserted shim "S2*" 1.00 mm
- Average backlash 0.29 mm
+ Lift (constant) 0.15 mm
= Thickness of shim "S2" 0.86 mm

- Determine shim(s) as accurately as possible
from table.

Parts catalog
The following shims are available for "S2"

Shim thickness (mm)
1)
0.15 0.50 1.50
0.20 0.80
0.25 1.00

1) Using the shim tolerance variations it is
Pa
ge 34 of 38 Drive
pinion and rin
g gear, ad
justin
g
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.TM03.39.19

possible to find the exact shim thickness
required, insert two shims if necessary.
Pa
ge 35 of 38 Drive
pinion and rin
g gear, ad
justin
g
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.TM03.39.19

39-172

Determining thickness of shim "S1"

Formula:
"S1"
=
"S
total
" - "S2"

Example:

Total shim thickness "S
total
" for "S1"
+ "S2" 1.80
mm
- Thickness of shim "S2" 0.86
mm
= Thickness of shim "S1" 0.94
mm

- Determine shim(s) as accurately as possible
from table. Part numbers

Parts catalog

The following shims are available for "S1"

Shim thickness (mm)
1)
0.15 0.50 0.90
0.20 0.60 1.00
0.30 0.70 1.20
Pa
ge 36 of 38 Drive
pinion and rin
g gear, ad
justin
g
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.TM03.39.19

0.40 0.80

1) Using the shim tolerance variations it is
possible to find the exact shim thickness
required, insert two shims if necessary.
Pa
ge 37 of 38 Drive
pinion and rin
g gear, ad
justin
g
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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yp
e=re
pair&id=AUDI.B5.TM03.39.19

39-173


Performing check measurement
Note:
Drive pinion with shim "S3" installed Differential with shims "S1" + "S2" installed
- Turn differential 5 turns in both directions so that tapered roller
bearings settle.
- Measure backlash four times on circumference.

Specifications: 0.12-0.22 mm
If the backlash lies outside the tolerances, the adjustments must be
repeated, but the total shim thickness "S
total
" must remain unchanged.
The individual measurements must not differ by more than 0.06 mm
from each other.
Pa
ge 38 of 38 Drive
pinion and rin
g gear, ad
justin
g
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.TM03.39.19