Bearing Pre-Load, Recalculating, Center Differential Ball Bearing
This adjustment is necessary when replacing the following parts:
- Transmission cover
- Output wheel/drive wheel
- Spacer Sleeve
- Center differential
Special tools and workshop equipment required
- Press Piece - Bushing - 50mm Diameter VW432
- Press Piece - Multiple Use VW447H
- Ruler (2 pc.) T40100
- Digital Depth Gauge (for example VAS6087)
- The outer race/tapered roller bearing for mounting drive wheel/spur gear is installed in the transmission cover.
- Drive wheel/spur gear, spacer sleeve and the center differential are installed.
-- Mount the Ruler (2 pc.) T40100 on the clean joint surface on the transmission cover.
-- Use a digital depth gauge -1- (for example Digital Depth Gauge VAS6087) to measure the space between the ball bearing -2- to the Ruler.
Mount tools Press Piece - Multiple Use VW447H and Press Piece - Bushing - 50mm Diameter VW432 to keep the center differential from tipping while measuring.
Dimension -a- = 142.45 mm in this example.
-- Add the height of the Ruler (2 pc.) T40100 to this measurement.
| Example: | ||
|---|---|---|
| The value read on the digital depth gauge (dimension -a-) | 142.45 mm | |
| + | Ruler (2 pc.)T40100 height | 39.70 mm |
| = | Measuring range (total dimension) | 182.15 mm |
Determine shim according to table. Refer to Measuring range (total dimension).
| Measuring range (total dimension) | Shim |
|---|---|
| Measured value (mm) | Thickness (mm) |
| 181.50 to 181.66 | 1.65 |
| 181.67 to 181.86 | 1.45 |
| 181.87 to 182.06 | 1.25 |
| 182.07 to 182.25 | 1.05 |
| 182.26 to 182.45 | 0.85 |
| 182.46 to 182.65 | 0.65 |
| 182.66 to 182.88 | 0.45 |
Allocate adjustment shims.
-- In this example, the spacer sleeve thickness is 1.05 mm.