A6 V6-3.0L (AVK) (2004)
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Install universal mandrel and perform check measurement.
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If shims have been determined correctly, dial indicator must indicate deviation r with a tolerance of 0.04 mm (reading counterclockwise in red
number display).
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Secure drive pinion nut using mandrel.
Note: Measure radial run-out at drive shaft flange and mark.
Ring gear, adjusting
(Adjusting differential)
Procedures to be performed after ring gear is adjusted.
Special tools and equipment
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VW 382/10 extension pin 6 mm
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VW 385/17 magnetic plate
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VW 387 dial gauge holder
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VW 388 measuring lever
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VW 521/4 locking sleeve
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VW521/8 bushing
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Dial gauge
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Torque wrench 0.600 Ncm
Notes:
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Tapered roller bearings for differential are low-friction bearings. Therefore friction torque can only be used for check measurement in a limited
way. A correct adjustment is only possible by determining the total thickness "S total".
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Do not grease new tapered roller bearings additionally for friction torque measurement. The bearings are already greased with a special oil from
the factory.
Total shim thickness Stotal for shims S1 S2, determining
(adjust preload of tapered roller bearing for differential)
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Drive pinion removed or ring gear detached from differential housing
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Pry drive flange seal using tire iron.
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Remove tapered roller bearing outer races for differential and remove adjustment shims.
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Press left tapered roller bearing outer race for differential (housing side) with adjustment shim "S2" into differential housing. Use a shim "S2*"
with a 1.00 mm thickness for measurement purposes (1 shims with 0.80 and 1 with 0.20 mm).
Note:
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All measurements are performed with shim S2 with 1. 00 mm thickness. The shim will be indicated by "S2*" in the following procedures. After
determining backlash, S2* is replaced by final shim S2.
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Drive in right tapered roller bearing outer race for differential (cover side) without adjustment shims up to stop.
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Insert differential in housing. Ring gear is on the right side (cover side).
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Install cover and tighten bolts to 25 Nm.