Toro ProForce 44538 Service Manual page 61

Removal (Fig. 2)
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 Chapter 4 -- Electrical System). Position discon-
nected negative cable away from the negative battery
terminal.
3. Remove top grill to allow access to blower drive shaft
(see Guards Removal in the Service and Repairs sec-
tion of Chapter 6 -- Chassis).
4. Remove cap screws, flat washers and lock nuts that
secure drive shaft assembly to hubs on engine shaft and
blower shaft.
5. Lift drive shaft assembly from machine.
6. Disassemble drive couplings from drive shaft using
Figures 2 and 3 as guides. Note differences in coupling
spacer flange thickness for assembly purposes.
7. Inspect drive couplings for damage and replace if
necessary.
8. If necessary, remove hubs from engine shaft and
blower shaft:
A. Remove cap screw and flat washer that secure
hub to shaft.
NOTE: Hub has a tapered ID and will require a puller
to remove it from shaft.
B. Use appropriate puller to remove hub from shaft.
C. Remove woodruff key from shaft slot.
Installation (Fig. 2)
1. If hub was removed from engine shaft or blower
shaft, thoroughly clean tapers of shaft(s) and hub(s). Fit
woodruff key to shaft slot and place hub on shaft. Apply
Loctite #242 (or equivalent) to threads of cap screw
used to secure hub to shaft. Secure hub to shaft with cap
screw and flat washer.
ProForce Debris Blower
2. Place coupling spacers into rubber coupling.
3. Secure drive couplings to drive shaft with cap screws
and lock nuts using Figures 2 and 3 as guides.
4. Position drive shaft assembly to engine shaft and
blower shaft.
5. Secure drive shaft assembly to hubs on engine shaft
and blower shaft with cap screws, flat washers and lock
nuts.
6. Install top grill to machine (see Guards Installation in
the Service and Repairs section of Chapter 6 -- Chas-
sis).
7. 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.
10
9
8
7
6
Loctite #242
1. Cap screw
2. Flat washer
3. Cap screw
4. Spacer
5. Cap screw
6. Woodruff key
Rev. B
Page 5 - - 5
12
11
2
3
4
300 to 330 in- -lb
5
(34 to 37 N- -m)
Figure 3
7. Shaft hub
8. Flat washer
9. Flange nut
10. Spacer
11. Drive coupling
12. Fan hub/coupling
Blower Assembly
1