CRANKSHAFT
I
BEARINGS
AND
OIL
SEAL
NUMBERS
INDICATE
THE
SUGGESTED
ORDER
OF
DISASSEMBLY
CYLINDER
BLOCK
8
CRANKSHAFT
BEARING:
(UPPER)
INSPECT
THE
JOURNALS
FOR
UNEVEN·WEAR.
CHECK
FOR
CRACKS,
BENDS,
AND
CLOGGED
OIL
HOLES.
9
CRANKSHAFT
TORQUE
98 -
105
FT-LBS
_--"A?~.
~
[135 - 145
Nm]
MAIN
BEARING
BOLT
TORQUE
36 -
40
FT-LBS
[50-56
Nm]
1
OIL
SEAL
CASE
BOLT
I
TORQUE
1 -9
Ft-Lbs
/10-12Nm
\\
~~
__
---.
THRUST
BEARING
~
~
TORQUE
98 -
105
FT-LBS
[135 - 145
Nm]
~-+-
_____
"f'BEARING
CAP
BOLT
CRANKSHAFT
INSPECTION
1.
Check the journals and pins for damage, seizure and
cracks. Check the joumalscontact surface for uneven
wear and replace
if
badly damaged.
2.
Measure the outside diameter
of
the journal and the
inside
dianieter
of
the main bearing.
If
the clearance (oil
clearance) exceeds the limit, replace the main bearing and
also the crankshaft,
if
necessary. Otherwise, fabricate an
undersized crankshaft and replace the main bearing with
an
undersized
one_
Standard
Limit
0.0008
-
0.0018in
(0.021
-
O_045mm)
.004in
(0_1mm)
3_
When grinding the crankshaft to under-size, take note
of
the "R" dimensions
of
the fillets
of
the journal and pin
area.
MEASURING
POSITION
MEASURING
THE
CRANKSHAFT
0.0.
AND
BEARING
1.0.
¢-w
Engines & Generators
30
II
MEASURING
DIRECTION
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