Spur Gear Unit

Spur Gear Unit

Special tools, testers and auxiliary items required

• Sealant

Removing

• Engine secured the scissor lift platform (VAS 6131 A) and separated from the transmission. Refer to => [ Engine and Transmission, Separating ] Engine and Transmission, Separating or secured to the engine/transmission holder => [ Engine, Securing to Engine and Transmission Holder ] Engine, Securing to Engine and Transmission Holder.

- Remove the left exhaust manifold with catalytic converter. Refer to => [ Left Exhaust Manifold with Catalytic Converter ] Left Exhaust Manifold With Catalytic Converter.

- Remove timing chain lower cover. Refer to => [ Lower Timing Chain Cover ] Lower Timing Chain Cover.

- Remove the hose clamp on the A/C compressor drive dust cap - arrow -.





- Remove the power take-off drive chain. Refer to => [ Power Take-Off Drive Chain ] Power Take-Off Drive Chain.

- Remove bolts - 1 to 6 -.





- Remove the spur gear unit - 1 - and remove the oil pump drive - 2 -.





Installing

• Replace O-ring.

- Replace the shaft seal - 3 - => [ Shaft Seal for the Power Steering Pump
Drive ] Power Take-Off Assembly Overview, and semi-circular seal - 4 - => [ Semi-Circular Ring ] Power Take-Off Assembly Overview in the power steering pump drive if damaged.

- Remove any sealant still on the spur gear unit and cylinder block.

- Clean the sealing surfaces; they must be free of oil and grease.

• Note the expiration date of the sealing compound.

- Cut the tube nozzle at the front marking (nozzle diameter approximately 1.5 mm).





CAUTION!
The lubrication system could be plugged with excess sealant.

• Do not apply sealant bead thicker than indicated.

- Apply sealant bead - arrow - to clean spur gear unit sealing surface as illustrated.





• Sealant bead thickness: 2.0 mm

- Install O-ring - 1 - and secure using some grease.

• Install the spur gear unit within five minutes of applying the sealant.

• Use a hose clamp appropriate for the model.

- The new hose clamp - 1 - must slide through the hole in the guide frame, over the dust cap - 3 - and onto the A/C compressor input shaft - 2 - while the spur gear unit is still removed.





- Install the oil pump drive - 2 -.





- Position the spur gear unit - 1 - onto the drive shaft.

- Turn the gears back and forth and mount the spur gear unit.

- Tighten the bolts => [ Spur Gear Unit, Tightening
Specifications and Sequence ] Power Take-Off Assembly Overview.





- Slide the dust cap - arrow - onto the end of the shaft for the A/C compressor drive spur gear with the hose clamp already installed and secure it.





The rest of the installation is in reverse order of removal, note the following:

- Install the power take-off drive chain. Refer to => [ Power Take-Off Drive Chain ] Power Take-Off Drive Chain.

- Install timing chain lower cover. Refer to => [ Lower Timing Chain Cover ] Lower Timing Chain Cover.

- Install the left exhaust manifold with catalytic converter. Refer to => [ Left Exhaust Manifold with Catalytic Converter ] Left Exhaust Manifold With Catalytic Converter.