Toro Multi Pro 1200 Service Manual page 183

7. Remove seals from open caps taking care not to
damage seal bores. Clean seal bore in caps. Remove
and discard O--rings from caps.
8. If required, press bearings from worm (input) shaft
(item 26).
9. If necessary, remove bearing cups from output caps.
Make sure to remove bearing cups evenly to prevent
damage to output caps.
IMPORTANT: Do not attempt to remove both bear-
ing cones and gear from output shaft at the same
time. The key (item 4) will cause severe damage to
gear, shaft and bearings.
10.If worm gear (item 3) and bearing cones (item 2) are
to be removed from output shaft, support bottom side of
gear and press shaft down through one bearing cone
and gear (Fig. 21). Remove key from shaft. Second
bearing cone can then be pressed from shaft.
11. Thoroughly clean all gearbox components and in-
spect for evidence of wear or damage. Replace internal
components as needed.
Assembly (Fig. 20)
1. If removed, install bearings onto worm (input) shaft.
Press on the inner bearing race until the bearing is tight
against the shaft shoulder.
2. If removed, press bearing cups into output caps.
3. If worm gear and bearing cones were removed from
output shaft, fit key into output shaft and position gear to
shaft. Press gear onto shaft until the gear is centered on
the key (Fig. 22). Pressing on the inner bearing race,
install bearing cones until they are tight against the gear.
4. Slide worm (input) shaft with bearings into housing
noting correct orientation of shaft ends.
5. Adjust worm (input) shaft end play.
A. Position new shims to gearbox housing.
B. Install both open caps (item 14) (O--ring and seal
not installed on cap) to gearbox housing. Torque cap
screws 8 ft- -lb (10.8 N- -m) while checking for binding
of shaft. If shaft binds as screws are tightened, add
additional shims.
C. After both input caps are installed, check end play
of worm (input) shaft. Shaft end play should be from
0.001" to 0.003" (0.025 to 0.076 mm). End play can
be adjusted by adding or removing shims from be-
tween input caps and gearbox housing. Total shim
thickness at one input cap should be within 0.005"
(0.13 mm) of the total shim thickness of the other
cap.
Multi Pro 1200/1250
3
3
1. Press
2. Output shaft
3
1. Press
2. Output shaft
6. Once correct quantity of shims has been deter-
mined, make final assembly of input caps to gearbox
housing.
A. Remove open input caps from housing.
B. Install new O--ring into groove of input cap. Apply
light coat of grease on O--ring and gearbox housing
bore.
C. Taking care to not damage O--ring or shims,
install input cap over input shaft and into housing.
D. Apply Loctite #242 to cap screw threads. Install
and torque cap screws 8 ft- -lb (10.8 N- -m).
Page 7 - - 21
1
2
4
Figure 21
3. Bearing cone
4. Worm gear
1
2
4
Figure 22
3. Worm gear
4. Bearing cone
Drive Train