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tr
t
a
inder heod instollotion,
o
poir
of
guide
pins
moy be fobricoted from
cylinder
hecC
cop
screws
by
cutting
off
the
hexogon
heod
ond cutting
o
screw
i're.
slot in
the
end.
-
g"fen the cop
screws
or stud
nuts
:? 'c
62
Foot
Pounds
of
torque
with
o
-..'trJe
wrench,
following
the
sequence
s^:.r'n
in
Figures
3
ond
4. ln
oll
coses
-echeck
lo
torque
specificotions
with
=1."
ot
normol
operoting
tempero-
Front
FIGURE3
*
L
Heod
EngineCylinder
Heod Torque Tightening
Sequence
1-17/32"
3-l
1-17
/32"
Stud Nut
Type
FIGURE
4
-
Overheod Volve
Engine
Cylinder
Heod Torque Tightening
Sequence
ond
Bolt
Length
Chort
ROCKER
ARM
AND
SHAFT
ASSEMBLY
OverheodVolve
Engine
The
entire rocker orm ond volve
os-
sembly
is
lubricoted by
oil,
under
pres-
sure
from the
oil
pressure
gollery,
di-
'ected
through
the opening
provided
r
rhe cylinder heod, then through
the
:':-t
rocker
orm
shoft".s0pport
block.
-
e
'ocker
orm
shoft
is
of
one
piece
:: ^s"r:ction.
Therefore,
the
complete
,-:t'
c-d
rocker
orm
ossembly moy
be
':-':
.
eC
ofter the hold down bolts
ore
":'':.:i
--:
-::ker
orms
ore
retoined on
the
,
-:'-
.
. r
snop
ring,
thrust
woshers,
r-l ..:.:
".:sher on
eoch end
of
the
:rr:' =;,':
5
rllustrotes
the
ossembly
secr.e':3:i'he
rocker orms
on
one
enc
of':e
s.c{i.
The:::<e-
crm shoft
must
be
in-
:':
led
'...
'i
the rocker
orm
lubricoting
3
:c
es locoted
to the
bottom
of
the
:
"
::'.
,1S
ENGINE
195.6
Cubic lnch
L-Heod
ond
Overheod Volve
&&
ffi
s#
ffi
&
r#
S;
s-
\
,.'].'Tf
Irry
ffiYffi
-*t
f"#*
"r,i
3
*I
'l:.
I
I
t
i,,. S
..:
.t
I
r
,].
t
,l
1
ffi
d$
-*tL
ffi
ffi
!&
EE
&fl
ffi
ffi
FIGURE
5
-
Rocker
Arm
Shoft
Assembly Sequence
(One
End Shown)
lntoke
t
VALVES
Volve Adiustments
For
peok
performonce
ond
economy,
the
volve
cleoronce should
be
odiusted
every 8,000
to
12,000 miles
(Figs.
6,7,
8 ond
9).
FIGURE
6
-
L-Heod
Volve Adiustment
(Cold Setting
-
lntoke,
.016";
Exhoust,
.01
8")
I
nto ke
Exhoust
FIGURET-L-HeodVolve
Arrongement
FIGURE
8
-
Overheod Volve
Adiustment
with
Engine
"Hot"
ond
Running,
lntoke .012"
-
Exhoust.0l6"
Exhousl
FIGURE
9
-
Overheod Volve
Arrongement
Volve Springs
Whenever
volve
springs
ore
re-
moved,
they
should
be
tested
occord-
ing
to
the
specificotions
listed
below
using
o
volve spring tester
(Fig.
I0).
,}
FIGURE
l0
-
Volve
Spring
Tester
Any
spring not
within the
following
specificotions
should
be
reploced.
L-Heod
Free Length
Volve Open
Volve
Closed
25lzz"
75-82Lbs.
@
17|rc"
37-41
Lbs.
@
1y4"
I
I
8 tzto 15
19
20
2t
56
9
l0
2
4
14
7
't r
2t
3128
Front
i
t'
Overheod Volve
Free
Length
23h"
Volve
Open
I
15-
l25
Lbs.
@
1
?,r,r"
Volve
Closed
65-70
Lbs.
62
lt3 rr"
It
is
not
necessory
to
remove
the
c'vl-
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