Kymco MO P125, MO P 150 Service Manual - chap 11 (cart semialb)

11. CRANKCASE/CRANKSHAFT

11-0

PEO PLE 12 5/ 15 0

11

CRANKCASE/CRANKSHAFT

SERVICE INFORMATION........................................................ 11-2

TROUBLESHOOTING .............................................................. 11-2

CRANKCASE SEPARATION .................................................... 11-3

CRANKSHAFT INSPECTION................................................... 11-4

CRANKCASE ASSEMBLY........................................................ 11-4

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11. CRANKCASE/CRANKSHAFT

11-1

PEO PLE 125/150

11. CRANKCASE/CRANKSHAFT

11-2

PEO PLE 125/150

SERVICE INFORMATION

GENERAL INSTRUCTIONS

• This section covers crankcase separation to service the crankshaft. The engine must be removed

for this operation.

• The following parts must be removed before separating the crankcase.

-Cylinder head (!Section 7)

-Cylinder/piston (!Section 8)

-Drive and driven pulleys (!Section 9)

-A.C. generator (!Section 14)

-Carburetor/air cleaner (!Section 4)

-Rear wheel/rear shock absorber (!Section 13)

-Starter motor (!Section 16)

-Oil pump (!Section 4)

SPECIFICATIONS

Item

Standard (mm)

Service Limit (mm)

Connecting rod big end side clearance

0.10_ 0.35

0.55

Crankshaft

Connecting rod big end radial clearance

0_ 0.008

0.05

Runoutæ0.10

TORQUE VALUES

Crankcase bolt 0.9kg-m

Cam chain cover bolt 0.9kg-m

TROUBLESHOOTING

Excessive engine noise

• Excessive bearing play

• Excessive crankpin bearing play

11. CRANKCASE/CRANKSHAFT

11-3

PEO PLE 125/150

CRANKCASE SEPARATION

Remove the two crankcase attaching bolts.
Separate the left and right crankcase halves.

Remove the gasket and dowel pins.

Remove the crankshaft from the left
crankcase.

Clean off all gasket material from the
crankcase mating surfaces.

Dowel Pins

Crankcase Bolts

Gasket

Do not damage the crankcase gasket
surface.

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Avoid damaging the crankcase mating
surfaces.

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11. CRANKCASE/CRANKSHAFT

11-4

PEO PLE 125/150

Remove the oil seal from the right crankcase.
Check the oil seal lip for wear or
deterioration.
The installation sequence is the reverse of
removal.

CRANKSHAFT INSPECTION

Measure the connecting rod big end side
clearance.

Service Limit: 0.55mm replace if over

Turn the crankshaft bearings and check for
excessive play.
If they do not turn smoothly, quietly or if
they fit loosely in the crankshaft, replace the
crankshaft as a set.

CRANKCASE ASSEMBLY

Install the crankshaft into the left crankcase.

Connecting Rod Big End

Crankshaft Bearings

11. CRANKCASE/CRANKSHAFT

11-5

PEO PLE 125/150

Install the dowel pins and a new gasket onto
the left crankcase.

Tighten the two crankcase attaching bolts.
Torque: 0.9kg-m

Gasket

Crankcase Bolts

Dowel Pins

Place the right crankcase over the
crankshaft and onto the left crankcase.

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