MAINTENANCE AND ADJUSTMENT
60
Measur
ing
big-end
The
b
ig
..end
bearing
fitted to
the
co
nn
ecting.
rod must
be
«cured
by
lighteni
ng
the cap
boilS
8.5
± 0.5
kg-m
(61.5 ± 3.6
fl-
Ib).
'\l
""T"'!
I
I
"'
2
I
Positions
fot'
mik
ing
bi
g-e
nd
bearing
(d) Check the contact pattern
of
blg""nd be4ring
on crankpin
by
lilting the big end in the nonnal
manner
to
the
crankpin,
with
the
cranksh.an
l
aid
out on the bench,
3.Jld
by
using
a
pas.te
of
r
ed
lead
Or Pwssian
blue
10
visualize
the
con
-
tact.
Be
sure
to tighten
the
Clip bolts to
the
specified torque, that is, 8.5 k
g-m
(6J.S fl-lb).
The
contact should occur over at least 75%
of
the
entire
surface;
if not,
replace
the
bearing.
[NOTE
]
The
abov
e job of
ch
ecking
the
contact
pattern
may
beelim
in
aled
where
t
he
c:rankpin
is
ground
to the s,,"cified tolemnce and the bearing has
be
en
repl
a
ce
d.
This
is
be
c
ause
a
replacement
bea
Iing
is
precis
ion.fmished to
ensure
the
speci-
fied exte
nt
of contact.
(eJ Check each bearing shell for "crush."
SheUs
foun
d
to
be
loose
in
the
hore
or
have
an
exces-
s
ive
crush
mun
be
repjac.td.
A
crush
of
up
to
0.04 nUll (0.0016 in.), which
will
yoeld
t
o,
load
of
350
kg
(772
Ib)
.
is
prescribed.
A.s
in
the
case.
of
the
main
bearin
g shelli,
some
"
cru
sh'·
is
needed
for
securing
a
pr
oper
fit, without
which the bearing might roll
or
jump
in
place,
res
ulting
in
localized
ove
rl
oa
ding
and
c
onsequ-
ent flaking, burning or faligue failure.
Check
to
be
sure that the
"crush"
disappea
rs
to allow
the
bearing
cap
to
mate
the
big
end
pmitively
When
Ihe c
.p
bolts are lightened 10
8.S kg-m (6 1
.5
ft-
lb)
.
350
kg
t
C
ru
sh: 0
-0.04
mm
Big-end
buring
crush
(I) Check
••
cb connecting rod for end play
in
the
manner
ill
u
st
rat
ed, with
th
e
cap
bolts
lightened
to
8.5 ± 0.5
kg
·m (61.5 ± 3.6 ft-Ib).
Use
a thick-
ness
gauge
to
measure
the
end
play
(which
is
the:
clearance
between
bjg
end
and
crank
ann
). If
the
clearance
measured exceeds
the
service
limit,
rep
lBce
the
connecting
rod
or
big-end
Dearing.
Un
it
: mm {in ,)
Item
Standar
d
S
ervice
li
mit
Connecting rod
O.JS
- 0.
35
0_50
end play (0.006 - 0.
014)
(0
.020)
Checking end p
la
y of con
ne
c
ti
ng
rod
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