39-166
 
     
Drive pinion and ring gear, 
adjusting 
     
General notes:  
     
Drive pinion and ring gear must be very 
carefully adjusted to ensure long service life 
and smooth running. At the factory, drive pinion 
and ring gear are adjusted relative to each 
other to ensure smooth running and low noise 
in both directions. The location for the 
smoothest running is determined by moving 
drive pinion axially whereby ring gear is moved 
far enough out of the backlash-free position so 
that the backlash is within specified tolerances. 
     The goal of the adjustment is to reproduce the 
setting for the quietest possible running, as 
obtained on the test machine during production.
     The deviation, or tolerance "r" which is based 
on the master gauge "R0" is measured for the 
final drive sets supplied as replacement parts 
and marked on the outer circumference of the 
ring gear. Every drive pinion set - drive pinion 
and ring gear - may only be replaced together. 
     Follow general repair notes for tapered roller 
bearings and shims. 
     
Pa
ge 1 of 38 Drive 
pinion and rin
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justin
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11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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pair&id=AUDI.B5.AT01.39.15