Toro Groundsmaster 300 Series Service Manual page 338

Installing Gearbox and Drive Pulley
1. Install four (4) isolation mounts into two (2) brackets.
Use water or lubricant to ease installation. Install
mounts from bottom of bracket.
2. Install bracket on each side of gearbox with cap-
screws and lockwashers. Tighten capscrews to a torque
of 20 - 26 ft-lb.
3. To install the pulley, slide the taper lock - small end
first - into the pulley hub.
4. Insert the woodruff key into the keyway in the gearbox
shaft. Slide the pulley with the taper lock onto the
gearbox shaft while aligning the key and keyway.
NOTE: The large hub on the pulley must face away from
the gearbox, and like the taper lock, the pulley must
contact the shoulder on the gearbox shaft.
5. Rotate the pulley to get the non-threaded holes in the
taper lock to line up with the two threaded holes in the
hub of the gearbox pulley. Start threading the setscrews
into the two holes and tighten them alternately and
evenly until both setscrews are tight.
6. Using a brass drift pin or sleeve and a hammer, hit
the taper lock firmly. Now tighten the setscrews to 55
in-lb. Continue to hit the taper lock and tighten the set
screws until the 55 in-lb of torque will not turn the
setscrews.
7. Check the alignment of the gearbox with a spindle
pulley. Loosen and relocate the taper lock to adjust, if
necessary.
8. Fill the recessed socket head in each setscrew, and
the other taper lock holes, with grease to prevent dirt
from packing into the holes.
9. Align holes in thin metal strip with the two front
gearbox mounting holes on base plate.
Repairs
10. Mount gearbox with brackets onto top of cutting unit.
Insert four (4) carriage bolts up from bottom of cutting
unit and install flatwasher and nut on each bolt to secure
the gearbox. Tighten nuts to 20 - 26 ft-lb.
11. Install drive belts onto gear box pulley and adjust
idlers to tension belts.
12. Install cutting unit covers.
13. Install drive shaft to gear box and secure with a new
roll pin.
14. Remove the gear box fill plug and check plug. Add
SAE 80W90 API GL-5 gear lube until level is to the
bottom of the check plug hole. Install plugs in gear box.
1. Isolation mounts
2. Brackets
3. Capscrews & lockwashers 8. Carriage bolts
4. Gear box
5. Woodruff key
Page 11 - 22
Figure 30
6. Pulley assembly
7. Metal straps
9. Flatwashers & nuts
10. Taper lock
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Groundsmaster 300 Series