Toro ProForce 44538 Service Manual page 51

Removal (Fig. 25)
1. Position machine on a firm, level surface. Make sure
engine is stopped and remove key from the ignition
switch. Chock wheels to prevent machine from moving.
2. To prevent unexpected machine operation, discon-
nect the negative battery cable from the battery terminal
(see Battery Service in the Service and Repairs section
of this chapter). Position disconnected negative cable
away from the negative battery terminal.
3. Unplug wire harness connector from nozzle motor.
4. Loosen, but do not fully remove, flange nut that se-
cures drive pulley to nozzle motor shaft. Loosen flange
nut at least two turns.
5. Remove two (2) cap screws (item 21) and flange nuts
(item 22) that secure leaf spring to motor bracket. Re-
move leaf spring with bearing and flat washers (item 5)
from bracket.
6. Loosen two (2) flange head screws (item 14) and
flange nuts that secure nozzle motor bracket to outer
housing. Rotate bracket and nozzle motor to loosen v--
belt.
7. Loosen cap screws and flange nuts that secure belt
guard (item 13), route v--belt from behind guard and
carefully remove belt from machine.
NOTE: The shaft of the nozzle motor is tapered.
8. Use appropriate puller to loosen drive pulley from
nozzle motor.
9. Remove flange nut and drive pulley from nozzle mo-
tor shaft.
10.Support nozzle motor to prevent it from falling. Re-
move three (3) cap screws that secure nozzle motor to
bracket. Remove nozzle motor from machine.
Installation (Fig. 25)
1. Position nozzle motor to bracket and secure with
three (3) cap screws.
2. Thoroughly clean tapered surfaces of motor shaft
and drive pulley.
ProForce Debris Blower
3. Slide drive pulley onto motor shaft and secure with
flange nut.
4. Place v--belt in nozzle pulley, route behind belt guard
(item 13) and install belt on motor pulley.
5. With a 3/8 in. drive torque wrench, pivot the motor
bracket from 200 to 230 in- -lb (23 to 25 N- -m) to set v--
belt tension (Fig. 26). Do not over tension belt. Hold
bracket with the torque wrench and tighten two (2)
flange head screws and flange nuts to secure belt ad-
justment and nozzle motor bracket.
6. Center belt guard around v--belt. Tighten cap screws
and flange nuts to secure belt guard to machine.
7. Position leaf spring with bearing and flat washers
(item 5) to bracket. Make sure that five (5) washers are
placed between spring and bracket at each mounting
hole. The bearing on the leaf spring should be centered
on the outside of the v--belt. Secure leaf spring to motor
bracket with two (2) cap screws (item 21) and flange
nuts (item 22).
8. Connect wire harness to nozzle motor.
9. Connect negative battery cable to negative battery
terminal. Tighten nut that secures battery cable from 10
to 15 ft- -lb (14 to 20 N- -m). Make sure that battery cover
is secured.
1. Drive pulley
2. Leaf spring
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Figure 26
3. Flange head screw
4. Torque wrench access
Electrical System
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