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ENGINE
EH42PL/EH50PL Engine
Assembly, Cont.
Counter Balancer
1. Make sure all bearings are firmly seated in the
crankcase.
2. Measure the width of the counter balancer shaft at
the bearing seats with a dial caliper or micrometer,
and record reading.
3. Measure the distance from the PTa crankcase
mating surface to the bearing using a dial caliper
and a straight edge. Subtract the thickness of the
straightedge and record.
4. Measure the
distance from
the
magneto
crankcase mating surface to the bearing using the
same method.
5. Add the readings obtained in step 3 and 4.
6. Subtract the counter balancer shaft width
measured in step 2 from the figure obtained in step
5.
7. Subtract the thickness of the existing shim from
the result of step 6 to determine if a different shim
is needed.
Pump Shaft
1. Make sure the pump shaft bearing is firmly seated in the Magneto side crankcase.
2. Measure the distance from the magneto crankcase mating surface to the bearing using a dial caliper and a
straight edge. Subtract the thickness of the straightedge and record.
3. Install the gear on the oil pump and measure the width of the pump and gear. Subtract this measurement from
the measurement recorded in step 2.
4. Subtract the thickness of the existing shim from the result of step 3 to determine if a different shim is needed.
Pump Shaft Oil Seal Installation
1. Install the seal from the outside of the crankcase (water pump side) with the spring facing inward, toward the
pump shaft bearing.
2. Drive or press the seal into place using the 25mm (.985") seal driver, until flush with the bottom of the
mechanical seal bore.
3. Lubricate the seal lip with grease.
7/96
3.76
Polaris Industries Inc.
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Troubleshooting
