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Crankshaft Radial Play
(PTO Cover Bearing)
Measure crankshaft journal diameter (PTO cover
bearing). Compare to plain bearing inside diame-
ter (PTO cover). Refer to
section.
vmr2006-044-042_a
1. Micrometer
2. Crankshaft journal (PTO support bearing)
CRANKSHAFT JOURNAL DIAMETER
(PTO COVER BEARING)
NEW
SERVICE LIMIT
CRANKSHAFT RADIAL PLAY
(PTO COVER BEARING)
SERVICE LIMIT
If crankshaft journal diameter is out of specifica-
tion, replace crankshaft.
If crankshaft radial play (PTO cover bearing) is
out of specification, replace plain bearings and
recheck.
Assembling the Crankshaft
For assembly, reverse the disassembly procedure
however, pay attention to following details.
Clean the split surface on both sides (cracked
area) carefully with compressed air.
Insert plain bearings in the connecting rods as il-
lustrated.
vmr2016-421
PTO COVER
in this sub-
34.004 mm to 34.020 mm
(1.3387 in to 1.3394 in)
33.998 mm (1.3385 in)
0.10 mm (.0039 in)
Subsection 10 (BOTTOM END)
R1004motr20A
1. Half plain bearing of connecting rod big end
2. Mating surface of the connecting rod
3. Joining surface of plain bearing in line with connecting rod
groove
Oil the plain bearing surface of the connecting rod
and crankshaft pin before installation.
NOTICE
Lower cap and rod must match to-
gether since there is a cracked surface.
Oil NEW connecting rod screws.
Thread screws in the connecting rods, then
tighten as per following procedure.
NOTICE
Strictly adhere following instruc-
tions:
– Always use NEW connecting rod screws at fi-
nal assembly. They are not reusable.
– Do not apply any thread locker.
– The running direction of the big end bearings
and of the piston pins must not change.
– Always perform each step on both connecting
rod screws before going to the next step.
– Failure to strictly follow procedure may cause
connecting rod screws to loosen and lead to se-
vere engine damage.
REQUIRED TOOLS
Torque wrench
Angle torque wrench
1
3
2
21
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Troubleshooting
