Drive Wheel/Spur Gear Tapered Roller Bearing Pre-Load, Determining

Drive Wheel/Spur Gear Tapered Roller Bearing Pre-Load, Determining

Determine the New Adjusting Shim "S5 "

This adjustment is necessary when replacing the following parts:

• Transmission cover

• Center differential housing

• Gear carrier

• Output wheel/drive wheel

• Tapered roller bearing on the drive wheel/spur gear

Special tools, testers and auxiliary items required

• Magnetic Plate 50 mm Dia. (VW 385/17) from the Universal Measuring Tool (VW 385)

• Dial Gauge Holder (VW 387)

• Crown Wheel Adjustment Device (VW 521)

• Dial Gauge Extension from the Dial Gauge Adapter (2066)

• The outer race/tapered roller bearing for mounting drive wheel/spur gear is installed in the transmission cover.

• The outer race/tapered roller bearing - without shim - or mounting the drive wheel/spur gear is installed inside the gear carrier.

- Install the drive wheel/spur gear in the transmission cover.

Install the gear carrier on the transmission cover as follows:






• Installed position: The tab - arrow A - on the gear carrier - 1 - must installed into the opening - arrow B - inside the transmission cover.

- Next, mount the center differential housing - B - to the transmission cover using the bolts - A - and - arrows - (5 bolts).






- Then set the transmission cover with the attached center differential housing in vertical position making sure the center differential housing is facing downward.

- Install the measuring tools.

- Attach the (VW 387) in the hole in the transmission cover using the bolt - B - and nut.






- Position the dial gauge extension in the center of the measurement plate (VW 385/37).

- Set the dial gauge (3 mm measuring range) with 2 mm pre-load to 0.

- A - dial gauge extension from the (2066)

- Move the drive wheel/spur gear up and down using the crown wheel adjustment device (VW 521).

- Read the play off the dial gauge (for example 0.76 mm).

Example:






• Allocate adjustment shims, refer to the electronic parts catalog ETKA.

- Shim thickness "S5 " in this example is 0.86 mm.