Press the chain tensioner of the oil pump in -direction of arrow- and lock with rig pin -T40011-.
–
Remove chain tensioner of oil pump -1-.
–
Remove drive chain for oil pump from chain sprocket at the crankshaft.
Note
For the following working step a second mechanic is required.
–
Use a suitable cross-head screwdriver (approx. 2 mm) to lift the locking wedge of the chain tensioner in -direction of arrow 1-, press the tensioning rail in -direction of arrow 2- and secure the chain tensioner with rig pin -T40011-.
Caution
t
The lock washer -A- of the chain tensioner must not be bent or levered off!
t
If the automatic resetting of the chain tensioner does not function, the timing chain can jump over a tooth at a cold start - risk of engine damage!
–
Remove tensioning rail -2-.
Note
The inlet camshaft jumps in the running direction of the engine.
–
Remove sliding rail -1-.
–
Remove timing chain.
Install
Note
t
The following work sequence must be performed in one work step, to do so a second mechanic is required.
t
The coloured links of the timing chain must be positioned on the markings of the chain sprockets.
t
Hold the wrench until the sliding rail and the tensioning rail are installed.
–
Place timing chain onto outlet camshaft.
–
Place timing chain onto crankshaft.
–
Turn inlet camshaft with wrench in -direction of arrow- and fit timing chain.
–
Install sliding rail and tighten screws -1-.
–
Install tensioning rail and tighten screw -2-.
–
Fit on bearing frame and screw in screws -arrows- by hand.
–
Remove the locking pin -T40011-.
–
Tighten the screws -arrows- for the bearing frame → Chapter.
–
Install control valve (left-hand thread) → Chapter.
Further installation occurs in reverse order. However, pay attention to the following: