5 Series E34 525td (M51) TOUR
Clean sealing faces of cylinder head and engine block; if
necessary, remove traces of sealing compound with hardwood
spatula. Make sure that no sealing compound falls into the oil or
coolant channels.
If no work has been done on crankcase which alters piston
clearance, use seal with identical thickness marking (number of
holes).
If work is carried out on the crank drive or piston, the seal
thickness must be redetermined.
Measuring the piston clearance:
Place dial gauge with measuring fixture special tool 00 2 530
on the cleaned cylinder head sealing face and set the preload to
zero.
Place the dial gauge at measure point "A" onto the cleaned
piston and determine the highest point by turning the crankshaft.
Make note of piston clearance "A".
Place the dial gauge at measure point "B" and make note of
piston clearance "B".
The average derived from measurement "A" + "B" is the "piston
clearance" of a piston.
RA Removing and installing cylinder head (M51)
BMW AG - TIS
23.01.2013 06:31
Issue status (12/2007) Valid only until next DVD is issued
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