audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABOUT US
Determining thickness of shim "S3" > < Determining dimension A:

A3 Mk1

Determining dimension B:
Determining dimension -B-:
   
The 1st value is the offset dimension -s- (3.95 mm in example). This value is marked on the face of the shaft bevel gear -arrow-.
l  Hexagon nut for output flange is tightened to torque → Item.
  N39-1096
The 2nd value is determined by measuring the distance between the large tapered roller bearing outer race (installed in pinion housing) and the machined rear surface of the shaft bevel gear.
–  Measure this gap “f” using a feeler gauge -A-.
  Note
Use feeler gauges graduated in steps of 0.03 mm.
In example: measurement = 0.95 mm.
–  To attain the 3rd value, the shaft bevel gear must be removed from the pinion housing.
  N39-1097
–  Measure distance between large tapered roller bearing outer race -A- and joint surface of pinion housing using a digital depth gauge (e.g. depth gauge -VAS 6087-).
–  Write down value -e- (20.10 mm in example)
  N39-1098
Example:
  N39-1099
Noted offset dimension -s-3.95 mm
Gap -f- as determined with feeler gauge+ 0.95 mm
Dimension -e- as determined with depth gauge+ 20.10 mm
Meshing dimension “C” with shaft bevel gear tolerance dimension “D” (C + D)+ 65.60 mm
Dimension -B-= 90.60 mm

   

Determining thickness of shim "S3" > < Determining dimension A: