39-56
Note:
Secure special tools VW 521/4 and VW 521/8 on right of differential
(transmission side) to lift differential. If the measurement has to be repeated, the differential must again be
turned 5 turns in each direction to settle the tapered roller bearing.
Formula:
"Stotal
"
=
"S2*" + measurement + bearing preload
Example:
Inserted shim(s) "S2*" 1.20 mm
+ Measured value 0.62 mm
+ Bearing preload (constant) 0.25 mm
=
Total shim thickness "S
total
"
for "S1" + "S2"
2.07 mm
Pa
ge 5 of 15 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.TM03.39.8
39-59
Measuring backlash
(Position of ring gear in transmission housing)
Drive pinion with shims "S3" and "S4"
installed
- Install differential.
- Turn differential 5 turns in each direction to
settle tapered roller bearings.
- Secure dial gauge retainer VW 387 onto housing.
- Insert adjustment device VW 521/4 and VW 521/8 for ring gear.
- Fit dial gauge with dial gauge extension VW 382/10 (6 mm flat).
- Set measuring lever VW 388 to dimension a = 79 mm.
- Determine play between the teeth flanks as follows:
- Turn ring gear until it makes contact with a tooth flank (end of
backlash travel).
- Set dial gauge to "0" with 2 mm preload.
- Turn ring gear back until lying against an opposite tooth flank
(backlash).
Pa
ge 9 of 15 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.TM03.39.8
