Balance Shaft Removal / Inspection - Polaris ACE 900 2017 Service Manual

ENGINE / COOLING SYSTEM

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
from the crankcase.
4. Inspect the balance shaft gear teeth for damage.
3.58
5. Measure each bearing journal in two locations, 90
q
and remove it
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)
9929422 R02 - 2017-2019 ACE 900 Service Manual
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