MTD 500 series Shop Manual page 52

Medium Frame 2 & 3 Stage Snow Throwers
14. Remove the Sun Gear. See Figure 5.30.
15. Remove the Ring Gear and washer.
16. Remove the snap ring from the right Planetary Gear
Set. See Figure 5.31.
17. Remove the shim washers.
18. Slide the right Planetary Gear Carrier off of the
shaft.
19. Remove the Sun Gear.
20. Remove the Ring Gear and washer.
21. Clean and inspect all of the components.
NOTE: If any of the Planetary Gear Set components
show signs of wear or damage, the whole
gear set must be replaced.
22. Grease the needle bearings and the inside of the
ring gear with Arctic Grease (737-0318-CRTG).
See Figure 5.32.
NOTE: Use a liberal amount of grease. Any excess
will work its way out of the gear set.
48
Sun Gear
Figure 5.30
Snap Ring
Figure 5.31
Figure 5.32
Ring Gear
Planetary Gears