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1.
INSPECTION OF CRANKSHAFT
INSPECT CRANKSHAFT FOR RUNOUT
tal
Place the crankshaft on V·bIocks.
Using
(h)
dial indicato
a
the ce
n
t
ar
Muimum circle runout;
crflP"lksholt.
If the circle runout is
2.
INSPECT MAIN JOURNALS AND CRANK PINS
Using
micrometer.
lal
a
main
journal and crank pin.
Main journal diameter:
Clank pin diemeter:
If the
i
e
e
d
am
r is not
t
fbi
clearance.
out-ol-round a
each main
Chllck
MaKimum t8per and out-of'round:
if
taper or oul·ol-round are greater than m.�imum. grind
c
e c
GRiND CRANK PIN AND/OR MAIN JOURNAL IF
ep
or r
la
e th
3.
NECESSARY
crank
8 new pin
Grind the
finished diameter.
!loud
Instllil
Bearing slle lUIS
Main journal flnllhed dlamater:
U/S 0.25
47.745 - 47.755 mm ( 1 .8797 - 1.8801
i
i'hed dia
Crank pi
n l
n
U/S 0.25
4A·F
39.746 - 39.766
4A-OE
41.746 - 4'.755
Taper and out-of-round limit:
••
ml!&sure thl! circle runout at
l.
ou
r
n
a
j
0.06 mm (0.0024
greater than maKimum. rep/ace the
tho diamoter of eltCh
measure
47.882 - 48.000 mm
(1.8891 - 1.98(18 in.1
4A·F
39.986
(1.6742 - 1 .6748 inJ
4A-OE
41.(188 - 42,.000 mm
('
.6628
within lpeclfiution.
journal and crank pin for taper
s shown.
ft.
s
rank
a
h
o;n undersized
pins and/or main journals to the under.
IIndlor m
O.2,S)
e
er;
m
t
11.6648 - 1 . 5662 In.1
mm
1 1.6436 - 1 .6439 in.)
mm
0.02
In.l
-
40.000
mm
-
, .8635 inJ
check the oil
and
0.02 mm
(0.0008
11'1.1
bearings.
inJ
mm
(0.0008 in.)
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