Gearcase Disassembly / Inspection - Polaris MS4000 Service And Owner's Manual

Gearcase Disassembly / Inspection

1. Drain and properly dispose of used oil. Remove any metal
particles from the drain plug magnet.
2. Remove bolts and output shaft cover.
3. Check the gearcase coil resistance. The resistance value
should meet the specifications listed below.
NOTE: To test the gearcase coils resistance, use the
coil harness. The gearcase coils should measure
between 22.8 ohms and 25.2 ohms.
4. Remove output shaft assembly
NOTE: Be careful not to misplace the thrust bearing
located between the two output shafts.
5. Clean all parts and inspect spacers for wear. Inspect ring
gear for chipped, broken, or missing teeth.
6. Remove the roll cage assembly, rollers, and H-springs.
7. Thoroughly clean all parts. Inspect the rollers (A) for nicks
and scratches. The rollers must slide up and down freely
within the roller cage surfaces (B).
8. Inspect the ring gear (C) for consistent wear patterns. The
surfaces should be free of nicks and scratches.
C
9. Inspect roll cage (B) sliding surface. This surface must be
clean and free of nicks, burrs or scratches. Remove and
inspect the H-springs.
B
FINAL DRIVE
B
A
H-Spring
7.19
7