MAINTENANCE AND ADJUSTMENT
i
hi
...
po"tUln is
5ubjll!lC1
to
WU/.
Rocker
arm
(3) Cheek to be su
re
that the oil
ho
le
dlU
led
ou
t in
the
ro
ck
er
ann
sha
ft
is
cl
ea
r.
When
in~lallin
g
r
e-
placement bushing;, be sUle
to
a
lig
ll
.he
oil
ho
les.
Valv
e-
clearan
ce
3djus
ti
ng
.screW
inspection
Ex
am
ine each a
dj
usting screw
to
see if its end
(a
ce
for
tontacling w
ith
th
e p
ush
ro
d is wo
rn
do
wn
~xcessively
or
if
its
thread
s
are
showing
signs
of
fa
ilu
re
; if
5-0
found,
r
epl
ace
it
by
a
new
One
.
Push
ro
d inspecti
on
Check push rods for deOeetlon, and inspect them for
w
ear
at
lhe
end
f
aces
for
conta.cting with
the
tappet
and
a
djus
ti
ng
screW
. "Deflect,ion
'>
referS
to
the
runout
exhibited
by
the push rod being
rota
t
ed
with its enda
supported
by such
as
"V" bl
ocks
.
Uni(: mm (in. )
hem
Standard
Push
rod
dl"ortlon
0.4 (0.016),
max
.
Exbau&t manlfold inspection
Inspect the manifold
flange for cracks
and
dis
tortion.
If the
Oango
facos ar. warped
by
mar.
th'n
0.2
mm
(0.
007
9 in.) when checked
as
sh
own,
grind
th
em s
mo
oth
and
flat.
If
a
ny
flange
is
fou
nd
c
rar.ke
d.
repla
ce
the
manifo
ld
.
Ch
ecking exha
us
t manifold flange faces for fJatnass
54
CrlIDkshaft inspecti
on
(I)
Cr
ankshaft
distortion
Supp
ort the cr
anksh
a
ft
as
shown
and ro
ll
i'
'0
measu
f
l::
its deflection
wi
th
a
dia
l
ga
u
ge
. "
Djsto
f-
li
on
"
is
one-
hal
f
of
th
e
denection
(dial gauge
r
ea
ding);
If
it
e"c
eods
the
repair limit, reduce it by
bending the
crankshaft
in
a p<es,s .
Unit:
mm lin.)
It
em
S
tan
da
rd
R
ep
air
l
im
it
Cra
nks
h
aft
distor
tion
0.Q2
(0.000
8)
,
0.05
max
(0.O()20)
a'k
..
lH..:'
..
,,'
-'
_
..
P,
...
. c
...
.
Ii(."i""='T"
~i'
--:--~
~
t'
..,
\0>
.
'/'t""r.
1
';
C
hec
king crankshaft for distortion
(2)
JOl1JYlal
inspection
(a) Inspect each journal
for
surface
naws
such
15
roughing,
scratches, pitting
and
burns,
and,
a
necessary,
repair
the
journals
by
grin
din
g
to
the
next
undersize
or replace
th
e
cr
ankshaft.
(b)
Mike each
journal
to
t
ak
e a total
of
four read-
ings
to determine the wear.
out
-
or
·r
ound
and
tapor (cyLindricity). If
any
of
.he
limits
is
exceeded, repair by grinding
lO
th
e next under-
s
ize
Or
rep
l
ace
(he crankshaft.
I'IF"-'
()
"
..
Mik
in
g cr
an
kshaft jou
rnal:.
To Next Page
Loading...
