3.58
9929422 R02 - 2017-2019 ACE 900 Service Manual
© Copyright Polaris Industries Inc.
BALANCE SHAFT REMOVAL / INSPECTION
1. Perform “Crankcase Disassembly / Inspection”
procedure.
2. Note timing marks on balance shaft and crankshaft
drive gears. Shafts must be properly timed upon
assembly.
3. Carefully rotate the balance shaft
q
and remove it
from the crankcase.
4. Inspect the balance shaft gear teeth for damage.
5. Measure each bearing journal in two locations, 90
degrees apart. Replace balance shaft if either journal
is worn below the service limit specification. If worn
past the service limit, replace the balance shaft
assembly.
MEASUREMENT
Balance Shaft Diameter (MAG & PTO):
1.4939 - 1.4946" (37.946 - 37.962 mm)
Service Limit: 1.4921" (37.900 mm)
ENGINE / COOLING SYSTEM
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