(O.05mm)
of
thickness
gauge
blades between
valve
tops and rockers. Now turn crank
shaft slowly until gauge blades are pressed tight, this point crank angle
is
valve lifts
reaCh
point A and B shown as Fig. 5-11. The mid·point between them corresponds
to
max.
cam
lift. Compare the results of measurement with the specified crank angles.
7
OIL
SEALS
Oil seals on front and rear ends of crank shaft must be centered right.
So
take care
in
clamping down timing gear case and rear end oil
seal.
The part
to
install front end
oil
seal
has concentricallY'machined periphery. Center the
seal
so
as
to
fit to it. Meanwhile, for rear end
oil
seal, center it on
basis
of its periphery.
In
either case, a special centering tool
is
available.
Remember
that
rear end
oil
seal
must be set with
oil
leak·off knotch
in
slinger down.
Prior
to
installing oil seals, coat their lips with pure engine oil.
8 MOUNTINGS
On
motor vehicle, rubber cushions on front mountings form a paralle-Iogram
in
free
condition
as
shown
in
Fig. 5-12, and a rectangle under load. Remember this
in
setting them.
On
construction
cushion rubber.
machine, three point support mounting
is
./1
\
f--+'\
~
~I.~
,
. $-
•
used. Timing gear side has
Fig.
5-12 Mounting on motor vehicle (in free condition)
-
76-
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