Toro 20330 Service Manual - Page 24

Note: If you turn this transmission on its side or, upside down, oil may leak out of the top. This,

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WORM DRIVE TRANSMISSION 2. Drive the roll pins out of the flanges in the front and rear of the case. (These pins align the top and bottom parts of the case) (Fig. 010). 5. Push the worm shaft out of the cover. This may require a little pressure. 6. To remove the axle, slide the clutch jaw to the side and drive the roll pin out of the sleeve and axle (Fig. 012). Fig 010 3428-0146 3. Remove the 4 self-tapping screw that connect the top and bottom cases. Note: If you turn this transmission on its side or upside down, oil may leak out of the top. This is not a sealed case. 4. Remove the transmission cover. The shift fork may come with the cover or may fall into the bottom of the case (Fig. 011). Fig 012 3428-0151 7. If the axle bearings are to be re-used, clean the end of the axle before drawing it out of the case. 8. Remove the sleeve, clutch jaw, helical gear, and thrust washer (Fig. 013) A BCD Fig 011 3428-0148 A. Helical Gear B. Thrust Washer Fig 013 C. Sleeve D. Clutch Jaw 3428-0153 1-6 WPM Drive Systems Manual

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1-6
WPM Drive Systems Manual
WORM DRIVE TRANSMISSION
5.
Push the worm shaft out of the cover. This may
require a little pressure.
6.
To remove the axle, slide the clutch jaw to the side
and drive the roll pin out of the sleeve and axle (Fig.
012).
Fig 012
3428-0151
7.
If the axle bearings are to be re-used, clean the end
of the axle before drawing it out of the case.
8.
Remove the sleeve, clutch jaw, helical gear, and
thrust washer (Fig. 013)
Fig 013
3428-0153
Fig 010
3428-0146
2.
Drive the roll pins out of the flanges in the front
and rear of the case. (These pins align the top and
bottom parts of the case) (Fig. 010).
Fig 011
3428-0148
3.
Remove the 4 self-tapping screw that connect the
top and bottom cases.
Note: If you turn this transmission on its side or
upside down, oil may leak out of the top. This
is not a sealed case.
4.
Remove the transmission cover. The shift fork may
come with the cover or may fall into the bottom of
the case (Fig. 011).
A. Helical Gear
C. Sleeve
B. Thrust Washer
D. Clutch Jaw
A
BC
D