Camshaft Timing Chains, Through 03.2007
Camshaft Timing Chains, through 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 ] Camshaft Timing Chains, Through 03.2007, Removing From Camshaft.
- Mark running direction of left camshaft timing chain with paint.
- Remove bolts - 1 - and - 2 - and remove left chain tensioner and left camshaft timing chain.
• Ensure tensioning piston does not slip out of chain tensioner and fall to ground.
- Mark running direction of right camshaft timing chain with paint.
- Remove bolts - 1 - and - 2 - and remove right chain tensioner and right camshaft timing chain.
• Ensure tensioning piston does not slip out of chain tensioner and fall to ground.
Installing
• If the tensioning element is to be removed from the chain tensioner, observe the installed 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".
- Completely release glide track at left and right removed chain tensioner for camshaft timing chain - arrow -.
• The chain tensioner piston - 1 - must be driven out completely, thereby releasing the retainer.
- Press the guide rail of the left and right camshaft timing chain inward - arrow - up to the stop and secure the chain tensioner with the 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 -.
- Set the chain tensioner in place on the left cylinder head and install the camshaft timing chain, as shown in the illustration.
- Tighten bolts - 1 - and - 2 -.
- Set the chain tensioner in place on the right cylinder head and install the camshaft timing chain, as shown in the illustration.
- Tighten bolts - 1 - and - 2 -.
The rest of the installation is in reverse order of removal, note the following:
- Mount the camshaft timing chains on the camshafts. Refer to => [ Installing ] Camshaft Timing Chains, Through 03.2007, Removing From Camshaft.
- Install lower timing chain cover. Refer to => [ Lower Timing Chain Cover ] Lower Timing Chain Cover.
- Install the transmission-side crankshaft shaft seal. 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 => [ 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, through 03.2007 Assembly Overview ] Camshaft Timing Chains, Through 03.2007 Assembly Overview