Intake Camshaft Balance Shaft

Intake Camshaft Balance Shaft

Special tools, testers and auxiliary items required

• Puller (T10394)

• Puller (T10055)

Removing

• The intake camshaft balance shaft must be replaced after removal.

- Remove the coolant pump toothed belt. Refer to => [ Coolant Pump Toothed Belt ] Coolant Pump Toothed Belt.

- Remove the camshaft timing chain. Refer to => [ Camshaft Timing Chain ] Camshaft Timing Chain.

- Remove the balance shaft timing chain. Refer to => [ Balance Shaft Timing Chain ] Balance Shaft Timing Chain.

- Remove the intermediate shaft sprocket - 1 -.






- Remove the bolt - 2 - on the intake camshaft balance shaft.






- Install the half shell (T10394/1) from the (T10394) and turn it upward in direction of - arrow -.






- Install the (T10394) and push the sliding sleeve in direction of - arrow -.






- Install the (T10055) into the (T10394) and remove the balance shaft in direction of - arrow -.






Installing

• Because of the small clearance between the balance shaft and the cylinder block, the balance shaft may need to be cooled in order to install it. Check if the balance shaft can be inserted into the cylinder block without forcing it in. If this is not the case, then the balance shaft must be installed cooled.

• For the correct tightening specifications, refer to => [ Balance Shaft Timing Chain Overview ] Balance Shaft Timing Chain Overview.

- Place the new balance shaft in a freezer for 30 minutes or spray it with commercially available cooling spray.

- Lubricate the balance shaft bearing with engine oil.

- Install the new intake camshaft shim and tighten the bolt - 2 -.






- Replace the O-ring - 1 - and coat with engine oil.






- Coat the mounting pin with engine oil and insert it. The alignment pin - arrow - for the mounting pin must engage in the hole in the cylinder block.

Always replace the intermediate shaft sprocket. Otherwise the backlash will not adjust itself and it could result in engine damage.

The new intermediate shaft sprocket has an anti-friction coating that wears off after a short period of use, which automatically adjusts the backlash.

- Mark the tooth face on the intermediate shaft sprocket with paint - arrows -.






- Install the intermediate shaft sprocket. The marking on the balance shaft must be between the markings on the tooth faces.

- Tighten the intermediate shaft sprocket bolt - 1 -: Tightening sequence, refer to => [ Intermediate Shaft Sprocket Tightening Sequence ] Balance Shaft Timing Chain Overview.






- Check the markings on the intermediate shaft sprocket/balance shaft - arrow -.

• Due to the ratio, the marking align only every 7th turn.

Further installation is performed in reverse order of removal, noting the following:

- Install the balance shaft timing chain. Refer to => [ Balance Shaft Timing Chain ] Balance Shaft Timing Chain.

- Install camshaft timing chain. Refer to => [ Camshaft Timing Chain ] Camshaft Timing Chain.

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

- Install the timing chain guard upper section. Refer to => [ Upper Timing Chain Cover ] Upper Timing Chain Cover.

- Install the ribbed belt tensioning damper. Refer to => [ Ribbed Belt Tensioner ] Service and Repair.

- Install the ribbed belt. Refer to => [ Ribbed Belt ] Ribbed Belt.

- Adjust the subframe mount. Refer to => [ Subframe Mount, Adjusting ] Adjustments.

- Replace the coolant pump drive seal. Refer to => [ Coolant Pump Drive Shaft Seal ] Coolant Pump Drive Shaft Seal.

- Install the coolant pump toothed belt. Refer to => [ Coolant Pump Toothed Belt ] Coolant Pump Toothed Belt.