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CHECKS
Surfaces 01 cams and camshaft
journals must be
very smooth and in perfect condition. Should
they show any scoring or siling
marks,
it
is advi-
sable
to replace
camshaft.
Nevertheless if
imper-
fections are slight, eliminate
them using
very
fine carborundum
.
Fitting
clearances between
journals and
housings
in crankcase are shown
on above chart.
TAPPETS
To check
tappets
and their guides in crankcase,
refer to
Fig.
53
and chart
here
below.
Always
check that surface of
tappet
contacting cam is
perfectly smooth.
Eliminate
possible slight wear
marks or
roughness
with fine carborundum.
Check
that
lappets guides have
no
scoring.
As-
sembling data and oversizes are shown in chart
below.
Fig.
53
22.000
21.979
~:.
,.
"
"
"
,
.
;',
o
22.000
22.021
COUPLING DATA OF TAPPETS AND GUIDES
IN
CRANKCASE
110
of
guides
Original
22.021
-
22.000
mm.
(.8669 - .8661 ")
Oversize
O.OS
mm.
22.071 - 22.050
mm.
(.0019)
(.6686 -
.8660")
0.10
mm.
22.121
- 22.100
mm
.
(.
0039)
(.8708
- .8700"
)
PUSH RODS
Push rods must not show any deformation, and
contact surfaces
at
ends
must be without seizing
0 10
01 tappels
litting
c learance
22.000 -
21
.979
mm.
0-
0.042
mm.
(.8661 -
.9046"
)
(O
-
.0016")
22.050
-
22.029
mm
.
0-
0.042
mm.
(.8680
- .8672")
(0
-
.0016")
22.100
-
22.079
mm.
0- 0.042
mm.
(.8700
- .8692")
(0
-
.0016")
marks
or roughness, otherwise
they
must
be
replaced.
Fig.
5311
33
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