6-15
Chain tensioner cylinder rear
– Insert the chain tensioner element
1
in the cylinder head bore.
NOTE: the housing and tensioning piston of the chain tensioner are
compression molded. If the two parts cannot be separated, the chain
tensioner must be replaced.
– Apply the chain tensioner bolt and new sealing washer to the chain
tensioner element without compressing the spring.
– Measure the distance
2
between the sealing washer and the cylinder
head.
The measured value has to be between 6 mm and 11 mm. If the value is
lower, the tensioning rail could be worn or the timing chain excessively
elongated. If it is higher, the engine was turned to TDC against the
running direction.
– Mount the chain tensioner bolt
3
with a new sealing washer and
tighten to 20 Nm.
1
3
2
