Skoda Workshop Service and Repair Manuals

Determining the thickness of adjusting washer “S3” l  Drive shaft removed with head bevel gear. l  Outer rings/tapered-roller bearing for bearing of head bevel gear/drive shaft are installed.

–  Set the adjusting ring of the universal measuring rod -VW 385/1- to the dimension “a” = 32 mm. –  Set the movable adjusting ring to measurement “b” = 70 mm.

–  Complete universal measuring rod -VW 385/1- according to figure.

–  Insert locating disc -VW 385/3- into the outer ring for the small tapered roller bearing. –  Insert universal measuring rod -VW 385/1-, while doing so interlock the pegs of the adjusting ring into the slot -arrow- of the locating disc. –  Position large cover and tighten screws. –  Pull the locating disc over the moveable adjusting ring to the outside until the universal measuring rod can no longer be turned by hand.

Determine dimension -A-: –  Measure the distance from the screw-on surface for the secondary shaft housing to the highest point of the universal measuring rod -VW 385/1- with a digital depth gauge (e.g. digital depth gauge -VAS 6087-). In the example the dimension 72.50 mm. –  Add to this dimension half of Ø the universal measuring rod -VW 385/1-. This value is 16.00 mm. Example:

on the digital depth gauge read off value	72.50 mm
half of Ø the universal measuring rod -VW 385/1-	+ 16.00 mm
Dimension -A-	= 88.50 mm

Determine dimension -B-: The 1st value is the stage dimension -s- and is 3.95 mm in the example. This value is recorded onto the front side of the shank bevel gear -arrow-. l  The nut for the output flange is tightened to the prescribed tightening torque → Chapter.

The 2nd value is the clearance “f”. The value is determined during the measurement between the large outer ring/tapered-roller bearing (fitted into the secondary shaft housing) on the sanded reverse side of the shank bevel gear. –  This clearance “f” is measured with a feeler gauge -A-.   Note Use feeler gauges with 0.03 mm graduation In the example the clearance “f” 0.93 mm. –  The shank bevel gear must be removed from the secondary shaft housing for measuring the 3rd value.

–  Measure the distance from the large outer ring/tapered-roller ring -A- to the screw-on surface of the secondary shaft housing with a digital depth gauge (e.g. digital depth gauge -VAS 6087-). –  Note the value -e-, in the example: 20.10 mm.

Example:

recorded stage dimension -s-	3.95 mm
Clearance -f- determined with feeler gauge	+ 0.93 mm
Value -e- determined with depth gauge	+ 20.12 mm
Setting dimension -C- with shank bevel gear deviation “D” (C + D)	+ 65.60 mm
Dimension -B-	= 90.60 mm

Determining the thickness of adjusting washer “S3” S3 = Dimension B - Dimension A

Dimension -B-	90.60 mm
Dimension -A-	- 88.50 mm
Thickness of adjusting washer S3	= 2.10 mm

Note Assign the adjusting washers via the → Electronic Catalogue of Original Parts. Available adjusting washers for S3

Adjusting washer thickness (mm)
1,20	1,50	1,80	2,10
1,25	1,55	1,85	2,15
1,30	1,60	1,90	2,20
1,35	1,65	1,95
1,40	1,70	2,00
1,45	1,75	2,05

–  Different tolerances allow to measure the required thickness for each washer very precisely.