Spur Gear, Removing From Crankshaft and Installing

Spur Gear, Removing from Crankshaft and Installing

Special tools, testers and auxiliary items required

• Oil Seal Driver (10 - 203)

• Puller (T10392)

• Hotplate (commercially available)

• Digital Thermometer (VAS 6519)

• Protective gloves

Procedure

- Balance Shaft Module, Removing. Refer to => [ Balance Shaft Module, Removing ] Balance Shaft Module, Removing.

- Remove the belt pulley side sealing flange. Refer to => [ Sealing Flange, Belt Pulley Side ] Service and Repair.

- Install the thrust piece (T10392/1) into the crankshaft stub





- Install the (T10392) into the hole in the spur gear, turn it to the right - arrow - and install the securing pins - A -.





- Counterhold the crankshaft with an open end wrench - A -. Remove the spur gear by installing the spindle with the open end wrench - B -.





- Clean the crankshaft stub.

• Check the temperature of the new spur gear with the thermometer (VAS 6519) when heating it.

• When the temperature reaches 200 °C (392 °F), there are about four seconds to position the spur gear on the crankshaft.

• A higher temperature increases the amount of time available for positioning (220 °C (428 °F) = approximately six seconds).

• Make sure the crankshaft stub is clean.


Danger of causing damage if the temperature is too high.

• Temperature must not exceed 240 °C (464 °F) otherwise the spur gear may discolor or warp.

- Lay the entire surface of the new spur gear on a commercially available hot plate and heat it to at least 200 °C (392 °F) (maximum 240 °C (464 °F)).

• Lettered side faces up.

- Set the (VAS 6519) to measuring range 2.





- Mount the temperature sensor (6519/1) on the spur gear as illustrated and read the temperature on the digital thermometer.








There is a risk of burns.

• Wear suitable protective gloves during the rest of the procedure.

- After the temperature is reached, remove the spur gear from pliers as illustrated.

- Quickly slide the spur gear by onto the crankshaft pins as far as the stop. Use the oil seal driver (10 - 203) for assistance and do not tilt the gear.





• Make sure the splines on the spur gear are not damaged.

- Let the spur gear cool down a few minutes and the install the balance shaft assembly.

- => [ Used Balance Shaft Module, Installing ] Used Balance Shaft Module, Installing.

- => [ New Balance Shaft Assembly, Installing ] New Balance Shaft Assembly, Installing.