Mazda 121 - Page 102

ASSEMBLY
THFUSI
METAL
(2)
lnstall
the upper
main
beanngs
and
thrust
bearings
i3t
Set
the
crankshatt
in the
cyl'nder
block
Caution
lio
not
totate
rtte
crankshaft
when
measuting
lhe
oil
clealances.
(4)
Position
Plastigage
atop
the
journals
in the axal
directton.
(5)
Install
the
lower
main
beanngs
and
the
main
bearing
'-'
iaos
according
to tne
cap
number
and
€
mark
(6)
Tnh€n
the
main
bearing
cap
bolls
In tlvo
or
thre€
steps
-
in'the order
shown
in the
figure.
t'?l':!'Jt*.ii'irT-".0
m-ks,
40-43
n'rb)
17) Remove
the
main
bearing
caps.
aFd
measure
lhe
PlaslF
' '
oaoe at
each
purnal
at
the
wldest
poini for the smallest
ileirance
and
al
lhe
narrowest
point for lhe
largest
clearance.
fgr
lt lhe
oil
clearance
exceeds
specilicalion
grind lhe
'
'
crankshaft
and
use undersze
main
bearings
(Refer to
Page
B-58.)
Oil clearance:
0.018-O,O36mm
(0'0007--'{''0014
in)
Maximum:
O.lomm
(0.004 in)
2.
Apply
a |beral
amount
ol
clean
engine
oil
to the
main
bea'
inqs,'thrusr
bearings
ano
main
lournals
s. inidr
thi
crarkst'Jtl
and
the
marn
bean'rg
caps
accord-
ing
to
the cap
number
and
e
mark.
4. Tiohten
the
main
bearing
cap
bolts
in two
or
three
steps
in the
order
shown
in the
figure
Tiqhteninq
torque:
!r-sg
-Hm
15.s-o'o
m-rg,
40-43
ft'lb)
B-64