Timing Mechanism Drive Chain

Timing Mechanism Drive Chain

Special tools, testers and auxiliary items required

• Locking Pin (T40071)

Requirements:

• The engine is removed. Refer to => [ Engine, Removing ] Engine, Removing.

• The engine and electro-drive drive motor are separated. Refer to => [ Electro-Drive Drive Motor and Transmission, Separating from and Installing to Engine ] Electro-Drive Drive Motor and Transmission, Separating from and Installing to Engine

Removing

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

- Remove the camshaft adjusters. Refer to => [ Camshaft Adjusters ] Service and Repair.

- Remove the oil pump and balance shaft drive chain. Refer to => [ Oil Pump and Balance Shaft Drive Chain ] Oil Pump and Balance Shaft Drive Chain.

- Press the drive chain tensioner guide rail in the - direction of the arrow - and secure the chain tensioner using a locking pin (T40071).






Risk of destroying due to reversed running direction on a used drive chain.

• Mark the drive chain running direction with painted arrows for reinstallation later. Do not mark the drive chain with a punch, notch or something similar.

- Remove the bolts - 1 - and the guide rail.

- Remove the bolts - 2 - and the chain tensioner.

- Remove the timing mechanism drive chain.

Installing

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

Installation is carried out in the reverse order while noting the following:

• Replace the bolts which have been tightened to an additional torque angle.

- Position the timing mechanism drive chain according to the marks made on the drive chain sprockets during removal.

- Install the guide rail and tighten the bolts - 1 -.






- Install the chain tensioner and tighten the bolts - 2 -.

- Press the drive chain tensioner guide rail in the - direction of the arrow - and remove the locking pin (T40071) from the chain tensioner.

- Install the oil pump and balance shaft drive chain. Refer to => [ Oil Pump and Balance Shaft Drive Chain ] Oil Pump and Balance Shaft Drive Chain.

- Installing the camshaft adjusters, refer to the following:

=> [ Installing, Cylinder Bank 1 (Right Side) ] Service and Repair.

=> [ Installing, Cylinder Bank 2 (Left Side) ] Service and Repair.

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