Timing Mechanism Drive Chain

Timing Mechanism Drive Chain

Special tools, testers and auxiliary items required

• Locking pin (T40071)

Removing

• Engine-transmission assembly removed and separated on the scissor lift table (VAS 6131 A). Refer to => [ Engine and Transmission, Separating ] Engine and Transmission, Separating.

• Engine oil drained.

- Remove drive plate. Refer to => [ Drive Plate ] Drive Plate.

- Remove the cylinder head cover. Refer to => [ Left Cylinder Head Cover ] Left Cylinder Head Cover, => [ Right Cylinder Head Cover ] Right Cylinder Head Cover.

- Remove left and right timing chain covers. Refer to => [ Left and Right Timing Chain Covers ] Left and Right Timing Chain Covers.

- Remove the intake manifold.

- Remove oil filter housing. Refer to => [ Oil Filter Housing ] Oil Filter Housing.

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

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

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

- Push drive chain tensioner guide rail in direction of - arrow - and secure chain tensioner using (T40071).





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

• Mark the drive chain running direction with arrows using paint for installation later. Do not mark the chain using a punch, notch or similar.

- Remove bolts - 1 - and remove guide rail.

- Remove bolts - 2 to 4 - and remove chain tensioner.

- Remove timing mechanism drive chain.

Installing

• Tightening specifications, refer to => [ Timing Mechanism Drive Chain Assembly Overview ] Timing Mechanism Drive Chain Assembly Overview.

Installation is in reverse order of removal, note the following:

• Replace bolts which have been tightened to torque.

- Route timing mechanism drive chain according to marks applied to drive chain sprockets during removal.

- Install guide rail and tighten bolts - 1 -.





- Install chain tensioner and tighten bolts - 2 -.

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

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

- Install camshaft timing chains => [ Installing ] Camshaft Timing Chain.

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

- Install the crankshaft seal on the transmission side. Refer to => [ Crankshaft Seal, Transmission Side ] Service and Repair.

- Install oil filter housing. Refer to => [ Oil Filter Housing ] Oil Filter Housing.

- Install intake manifold.

- Install left and right timing chain covers. Refer to => [ Left and Right Timing Chain Covers ] Left and Right Timing Chain Covers.

- Install cylinder head cover. Refer tot => [ Left Cylinder Head Cover ] Left Cylinder Head Cover, => [ Right Cylinder Head Cover ] Right Cylinder Head Cover.

- Install drive plate. Refer to => [ Drive Plate ] Drive Plate.