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ROCKER
MECHANISM
Rocker shaft
Length
Outer dIameter
Rocker
arm
bush
Type
Outer diameter
before
mountmg
Inner dIameter
Reamer fmlshed
dImensIon after
mountmg
l1llckness before
reamer
fmishmg
Clearance
Rocker
arm
Bore
Lever
ratlO
355
63
mm
14
1
32
m
l5 850
l5 875
mm
0 624
O 625
m
WhIte metal wIth
steellmmg
19075
19 101
mm
0 751
0 752
m
15 888
15 90l
mm
0 625 l 2
0
626
m
l 644
1
727
mm
0 065
1 2 0
068
m
0 013
0 051
mm
0
0001 2
0 002
m
19 012
19
37
mm
0 748 1 2 0 749 1
2
m
25 003
to
35 7l9mm
63
64
to
1 13 32
m
CY
INDER
HEAD
Removing
the
Cylinder
Head
Dram the
cooling
system
by
openmg the radlator and
cyhnder
block dram
taps
One
IS
sItuated inlet tube
at
the backSIde of the radlator and other
at
the
rear
nght
hand SIde of the engme
If
amt
freeze
mixture IS m use
It
should be dramed
mto
a
sUitable
contamer
and retamed for future
use
DIsconnect the
negatlve
cable from the
battery
be
extractmg the
term
mal
screw
and removmg the
lug
from the
battery
term
mal
post
Slacken both the
retammg
chps
on
the hose
connectmg
the radIator
to
the ther
mostat
housing
and
remove
the hose
Extract the
termostat
housmg
secunng
nuts
and
remove
the
housmg
and ther
mostat
Remove the alrcleaner
carburetor
rocker
cover
and the mlet and exhaust
mamfolds
Detach the
hIgh
tenslOn
cables and
remove
the
sparkmg plugs
also dIsconnect
the
water
temperature
gauge
connectlon
from the thermostat
housmg
Take off the rocker
assembly
not
forgettmg
to
slacken the external
cyhnder
head
nuts at
the
same
tlTpe
WIthdraw the
push
rods
keepmg
them
m
the
order of removal
The
cyhnder
head
can now
be hfted off the
cyhnder
block
To facilItate
breadmg
the
cylmder
head
OInt
tap
each Side of the head WIth
a
hammer usmg
a
pIece of wood
mterposed
to
take the blow
Do
not
use exceSSIve
force
f
20
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