Differential, Adjusting

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required

Transmission Support: VW353
Measuring Set - Magnetic Plate - 50mm: VW385/17
Dial Indicator 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, 6-50Nm: VAG1331A
-1- Internal Puller: VAS251615 (Kukko 21/7)
-4- Counter Support: VAS251623 (Kukko 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 - List Item: Washer.

Fig 1: Identifying Outer Race/Tapered Roller Bearing Pressed Into Clutch Housing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

NOTE:

Note the installation position of the washer.

The collar on the inner diameter faces the seal in the clutch housing.

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

Fig 2: Identifying Tapered Roller Bearing Outer Race Pressed In Transmission Housing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Insert the differential into the clutch housing.

-- Mount transmission housing and tighten 5 bolts.

-- Push the differential toward the clutch housing while turning it eight times.

-- Push the differential toward the transmission housing while turning it eight times.

-- Attach the measuring tools to the transmission housing.

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

Fig 3: Identifying Dial Gauge

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

A - 30 mm dial gauge extension

-- Move the differential up and down, 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

Fig 4: Identifying Outer Race/Tapered Roller Bearing Pulled Out Of Transmission Housing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

A - Counter Support: VAS251623 (Kukko 22/2)

B - Internal Puller: VAS251615 (Kukko 21/7)

-- Determine the shim part number using the Parts Information.

-- 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.

Fig 5: Identifying Tapered Roller Bearing Outer Race Pressed In Transmission Housing

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Tightening Specifications

Refer to OVERVIEW - TRANSMISSION HOUSING AND GEARSHIFT MECHANISM