Differential, Adjusting: Notes

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Special Tools And Workshop Equipment Required

Transmission Support:VW353
Measuring Set - Magnetic Plate - 50mm:VW385/17
Dial Gauge Holder:VW387
Press Plate:VW402
Press Piece - Rod:VW408A
Press Piece - Multiple Use:3005
Press Piece - Bushing:3259
Bearing Installer - Wheel Bearing:3345
Torque Wrench 1331 5-50 Nm :VAG1331
-1- Internal Puller:VAS251615 (21-7)
-4- Counter Support:VAS251623 (22-2)
Dial Indicator:VAS6080A
30 mm dial gauge extension

A New Differential Adjustment Is Required When The Following Components Have Been Replaced:

Transmission Housing
Clutch Housing
Differential housing or
Differential tapered roller bearing

Adjustment Overview. Refer to ADJUSTMENT OVERVIEW .

-- Pressing outer race/tapered roller bearing with shim into clutch housing -item ) OVERVIEW - DIFFERENTIAL, FWD - Washer.

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NOTE:

Pay attention to the installed position of the shim.

The collar on the inner circumference faces the seal.

-- Press the outer race/tapered roller bearing without the shim into the transmission housing.

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-- Insert differential into clutch housing.

-- Mount transmission housing and tighten 5 bolts.

-- Press differential in direction of clutch housing and rotate 8 times at the same time.

-- Press differential in direction of transmission housing and rotate 8 times at the same time.

-- Attach the measuring tools to the transmission housing.

-- Set the dial gauge with 1 mm pretension to "0".

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A -30 mm dial gauge extension

-- Move the differential up and down and read the play on the dial gauge and note it (example: 0.70 mm).

Shim, Determining

The specified bearing pre-load is obtained by adding a constant pre-load figure of 0.25 mm to the reading obtained.

Example:

Measured value	0.70 mm
+ Preload (constant value)	0.25 mm
Shim thickness =	0.95 mm

-- Remove the transmission housing.

-- Removing the outer race/tapered roller bearing from the transmission housing

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A -:VAS251623 (22-2)

B -:VAS251615 (21-7)

-- Shim part number.

-- Insert shim with the correct thickness.

The Following Shims Are Available:

Shim Thickness (mm)
0.65	0.85	1.05	1.25
0.70	0.90	1.10
0.75	0.95	1.15
0.80	1.00	1.20

If the measured shim thickness is larger than those listed in the Table, then install two shims that add up to the necessary thickness. Install the thicker shim first.

Tolerance variations make it possible to find the exact shim thickness required.

-- Install the outer race again and the tighten the transmission housing to the tightening specification.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.