Camshaft Timing Chains, From 03.2007
Camshaft Timing Chains, from 03.2007
Removing
• Engine and transmission separated. Refer to => [ Engine and Transmission, Separating ] Engine and Transmission, Separating, engine on the scissor lift platform (VAS 6131 A) or secured by the engine/transmission holder, refer to => [ Engine, Securing to Engine and Transmission Holder ] Engine, Securing to Engine and Transmission Holder.
• Engine oil drained.
- Remove clutch pressure plate.
- Remove the dual-mass flywheel. Refer to => [ Dual Mass Flywheel ] Dual Mass Flywheel.
- Remove the cylinder head cover. Refer to: Left => [ Left Cylinder Head Cover ] Left Cylinder Head Cover, right => [ 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 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 from the camshafts. Refer to => [ Camshaft Timing Chains, through 03.2007, Removing from Camshaft ] .
CAUTION!
Risk of destroying due to reversed running direction on a used camshaft timing chain.
• Paint arrows to mark the camshaft timing chain running direction so it can be installed again. Do not mark the camshaft timing chain with a punch, notch or something similar.
- Remove bolts - 1 - and - 2 - and remove left chain tensioner and left camshaft timing chain.
- Remove bolts - 1 - and - 2 - and remove right chain tensioner and right camshaft timing chain.
Installing
• If the tensioning element was removed from the chain tensioner, note installation position: Hole in housing floor faces toward chain tensioner, piston faces toward tensioning rail.
• Replace bolts which have been tightened to torque.
• Replace the gasket.
CAUTION!
Risk of damaging valves and piston crowns.
• If camshafts are rotated, crankshaft may not rest with any piston at " TDC".
- Press left and right camshaft timing chain guide rail inward - arrow - as far as stop and secure chain tensioner with Locking Pin (T40071).
- Clean oil strainer - 2 - in both chain tensioners if necessary.
- Place a new gasket - 3 - onto the rear of the chain tensioner - 1 -.
- Insert chain tensioner in left cylinder head and position camshaft timing chain according to mark applied during removal, as shown in illustration.
- Tighten bolts - 1 - and - 2 -.
- Insert chain tensioner in right cylinder head and position camshaft timing chain according to mark applied during removal, as shown in illustration.
- Tighten bolts - 1 - and - 2 -.
The rest of installation is in reverse order of removal, note the following:
- Mount the camshaft timing chains on the camshafts => [ Installing ] Camshaft Timing Chains, From 03.2007, Removing From Camshaft.
- Install lower timing chain cover. Refer to => [ Lower Timing Chain Cover ] Lower Timing Chain Cover.
- Install crankshaft seal, 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 => [ Installing ] Left and Right Timing Chain Covers.
- Install cylinder head cover. Refer to: Left => [ Left Cylinder Head Cover ] Left Cylinder Head Cover, right => [ Right Cylinder Head Cover ] Right Cylinder Head Cover.
- Install dual-mass flywheel. Refer to => [ Dual Mass Flywheel ] Dual Mass Flywheel.
- Install clutch pressure plate.
- After installing the engine, fill with oil and check the oil level.
Tightening specifications. Refer to => [ Camshaft Timing Chains, from 03.2007 Assembly Overview ] Camshaft Timing Chains, From 03.2007 Assembly Overview