Removing Timing Chain

Removing timing chain

Preliminary work
Preliminary work

ATTENTION: Engine damage due to turning the crankshaft against the running direction (engine assembled)!
--> Never turn the engine against the running direction when the timing drive mechanism is fitted (timing chain may jump over).
--> Proceed carefully while working as otherwise engine damage may occur.
--> Only turn the engine on the crankshaft and never on the camshaft as the timing chain can jump over.
--> After working on the camshaft timing gears, the timing must be adjusted.
--> Please observe the general warning notes and working regulations --> '10 The most important working regulations and warning notes'

1. Remove engine.
2. Remove cover for camshaft housing.
3. Remove chain case lid.

Information
Component overview

Overview Of Timing Drive Mechanism:

Component Overview For Timing Chain:

Removing timing chain
Removing timing chain

Note: If the timing chain has to be removed or replaced, check the guide and tensioning rails for wear and scoring and replace them if necessary.





Note:
^ The rolling direction of the timing chain must always be the same.
^ If the timing chain is to be reused, the rolling direction of the timing chain must be marked before it is removed.

1. Loosen the fastening screws of the camshaft wheels and camshaft adjusters (1 or 2 turns). To do this, hold the a/f 32 hexagon of the camshaft adjuster and camshaft timing gear against the corresponding camshaft with a ring wrench. Loosen the M12 cheese head bolt by 1 or 2 turns with socket wrench insert T60.

Camshaft Timing Gears And Camshaft Adjusters:

2. Pull guide rails between the camshafts away from the threaded pegs. To do this, let timing chain dangle between the camshafts.

Note: If the timing chain is to be reused, the rolling direction of the timing chain must be marked before it is removed.

3. Mark rolling direction of timing chain. Remove timing chain from all sprockets, pulling it forwards.