Balance Shaft Removal / Inspection; Balance Shaft Bearing Service; Crankcase Separation - Polaris RANGER ETX 2015 Owner's Manual

ENGINE / COOLING SYSTEM

BALANCE SHAFT REMOVAL / INSPECTION

1. Rotate crankshaft to align the timing marks as shown
below.
2. Install Crank-Balance Shaft Holder PA-51424
the balance shaft and crankshaft.
3. Remove the balance shaft nut
4. Remove Crank-Balance Shaft Holder PA-51424.
5. Remove the balance drive gear.
6. Remove the balance shaft retainer fasteners
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retainer .
7. Remove the balance shaft from the crankcase.
Tapping with a soft-faced hammer on the water pump
drive end of the shaft may be required.
8. Inspect drive gear for broken or damaged teeth.
9. Inspect bearing surfaces for scoring or signs of wear.
3.76
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and washer
NOTE
9926806 R03 - 2015 - 2016 RANGER ETX / 570 2-SEAT 2015 - 2016 RANGER 570 CREW Service Manual
10. Inspect / replace the balance shaft bearings in the
upper crankcase. See: PTO and MAG Side
Crankcase Bearing Service, page 3.78.
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onto
Due to extremely close tolerances and minimal wear,
counterbalance shaft ball bearings must be inspected
visually and by feel. Look for signs of discoloration,
scoring or galling. Turn the inner race of each bearing.
The bearings should turn smoothly and quietly. The
outer race of each bearing should fit tightly in the
crankcase bore. The inner race should be firm with
minimal side to side movement and no detectable up

BALANCE SHAFT BEARING SERVICE

1. Remove the balance shaft assembly. See Balance
Shaft Removal / Inspection, page 3.76.
2. Remove the water pump seal
.
Pump Service - ACE, page
3. Remove the oil seal
upper engine case.
e
and
4. Support the engine case on the MAG side in a
suitable shop press. Carefully remove the balance
shaft out the mag side of the upper engine case.

CRANKCASE SEPARATION

Before the crankcase can be separated, be sure the
entire top end, stator cover assembly and counter-
balance shaft assembly are removed from the engine
1. Support the engine so oil sump cover side is facing
upward.
NOTE
and down (radial) movement.
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).
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from the PTO side of the
NOTE
as outlined in this chapter.
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