Balance Shaft Removal / Inspection; Crankshaft Removal - Polaris RANGER 500 2018 Service Manual

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BALANCE SHAFT REMOVAL / INSPECTION

1. Rotate crankshaft to align the timing marks as shown

2. Pull upward on the balance shaft and remove it from

the crankcase.

3. Inspect drive gear

for broken or damaged teeth.

4. Inspect bearing surfaces

9928485 R01 - 2017-2018 RANGER 500 / 570 Service Manual

5. Inspect / replace the balance shaft bearings in both

1. Remove the engine from the engine stand and place

for scoring or signs of

ENGINE / COOLING SYSTEM

Inspection / Removal" procedure in this chapter.

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

and down (radial) movement.

the assembly on a sturdy work bench.

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