Datsun C210 series - Page 41

5
Hear
cylinder
head
to a
tempera
rure of 150 to 2000C 302 to 3920F
6 Fit insert
ensuring
that
it beds on
the bottom face
of
its recess
and
caulk more than
4
poinrs
7 Valve seats
newly
fitred
should
be
cut or
ground using
Valve Seat
Cutter
STll65000 I
at
the
specified
dimen
sions as shown in
Service
Data and
Specifications
8
Apply
small amount
of
fine
grid
iog compound
to valve
contacting
face
and
pur
valve
into
guide
Lap
valve
against
its seat until
proper
valve seat
ing
is obtained Remove valve
and then
dean
valve and vaJve seat
CAMSHAFTAND
CAMSHAFT
BEARING
CAMSHA
BEARING
a
EARANCE
Measure
the
inside diameter of cam
shaft
bearing
with
an inside dial
gauge
and
the outside diameter of camshaft
journal
with a micrometer
If
any
malfunction
is
found
replace
camshaft
or
cylinder
head
assembly
Max
tolerance of
camshaft
bearing
clearance
0 1 mm 0
004
in
EM119
Fig
EM 3D
Checking Camshaft
Bearing
CAMSHA
ALlGNMENT
I Check camshaft camshaft
journal
and earn
surface for bend wear or
damage
If
problems
are
beyond
the
limits
replace
the
parts
2
Camshaft
can be checked for
bend
by
placing
it on
V
blocks and
using
a
dial
gauge
with
its
indicating
fmger
resting
on center
journal
Engine
Mechanical
Camshaft bend
IT
otaI indicator
reading
less than 0 05
mm
10
0020
EM302
Fig
EM
31 Checking
Cam
haft
Bend
3
Measure camshafr end
playas
shown in
Fig
EM 32 If
beyond
the
specified
limit replace locating
plate
Camsh ft end
play
008 to
0
38 mm
0 0031
to 0 0150 in
EM310
Fig
EM 32 Checking
Cam haft
End
Play
4 Measure
camshaft cam
height
If
beyond
the
specified
limit
replace
camshaft
Refer to
Service Data and
Specifica
tions
VALVE
TIMING
If
any
valve
is
found
out of
speci
fications refer to Service Data
and
Specifications
one
possibility
is
that
cam Iobeis worn or damaged calling
for
replacement
of
camshaft
CYLINDER
BLOCK
I
Visually
check
cylinder
block for
cracks
or flaws
EM 16
2 Measure the
top
of
cylinder
block
cylinder
head
mating
face for
warp
age
If
warpage
exceeds
the
specified
limit correct
with a
grinder
Warpage
of
cylinder
block
surface
less than
0 10 mm 10 0039 in
EM751
Fig
EM 33
Checking
Cylinder Block
Surface
Note
Surface
grindingJimit
The
grinding
limit of
cylindet
block
is determined
by
tit
cylinder
head
grinding
in an
engine
Depth
of
cylinder
head
grinding
is
A
Depth
of
cylinder
block
grinding
is
B
The limit
is as follows
A
B
0 2 mm
0 008 in
3
Using
a
bore
gauge
measure cyl
inder
bore for
out of round or
taper
If
out
of round or
taper
is excessive
rebore
the
cylinder
walls
by
means
of
a
boring
machine Measurement should
be taken
along
bores for
taper
and
around
bores
for out of round
Refer to Service Data and
Specifica
tions
Out of round
X V
Taper
A B
c
A
20
79
I
Ii
60 2 36
B
jlll
1100
94
EM125
Fig
EM 34
Cylinder
Bore Measuring
Positions