Porsche 1972 911 Workshop Manual page 100

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C a m s h a f t H o u s i n g a n d C y l i n d e r H e a d
5. Clean inner and outer grooves of aluminum
piston. Install new, lubricated O-rings and
make sure they are not twisted. Install alumi-
num piston until the O-ring seals with the
housing, Now open the bleed screw slightly
and push down with Special Tool P 214 c
until the tool rests on the edge of the chain
tensioner. Then tighten bleed screw again
without delay,
Install spring, spring retainer and snap ring.
I N S T R U C T I O N S FOR : [ N S T A L L A T I O N
O F C H A I N T E N S I O N E R
To prevent- damage on the chain tensioner
housing, it is not permitted. to pre-load the
a
timing chain with
screwdriver. Force from
the screwdriver could deform the chain ten-
sioner housing, which in turn would cause the
the a1umin;m
piston (7) to seize. Only use
Special Tool 9182 for pre-loading.

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