Removal (Fig. 5)
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.
IMPORTANT: The two (2) nuts (item 5) used to se-
cure the rotor assembly to the rotor shaft have left
hand threads.
1.
NOTE: When installing inner nut that secures rotor as-
sembly to shaft, use a 1 1/4” wrench in flats on shaft to
prevent the shaft from turning.
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.
4. While holding rotor shaft with a 1 1/4” wrench in flats
on shaft to prevent the shaft from turning, install inner
nut and torque with offset wrench (see Special Tools)
from 50 to 60 ft--lb (68 to 81 N--m) to secure rotor as-
sembly on shaft.
3.
Remove top grill to allow access to blower assembly
(Fig. 6).
5. Apply Loctite #242 (or equivalent) to exposed
threads of rotor shaft.
4.
Remove blower drive shaft from machine (see Blow-
er Drive Shaft Removal in this section).
6. While holding inner nut with offset wrench (see Spe-
cial Tools) to prevent it from turning, install and torque
outer nut with second offset wrench from 190 to 210 ft--
lb (258 to 284 N--m).
5.
Remove retaining ring (item 2), wave washer(s)
(item 3) and front cap (item 4) from shaft.
NOTE: When loosening nuts that secure rotor assem-
bly to shaft, use a 1 1/4” wrench in flats on shaft to pre-
vent the shaft from turning.
7.
retaining ring (item 2) onto shaft. Up to three (3) wave
washers might be necessary to secure front cap.
Installfrontcap(item4),wavewasher(s)(item3)and
IMPORTANT: The two (2) nuts (item 5) used to se-
cure the rotor assembly to the rotor shaft have left
hand threads. Loosen these nuts by rotating clock-
wise.
8.
Installation in this section).
Install blower drive shaft (see Blower Drive Shaft
9. Install top grill to machine (Fig. 6).
6.
Loosen and remove outer nut from rotor shaft by ro-
10.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.
tating nut in a clockwise direction. Then, remove inner
nut by rotating nut clockwise. Use offset wrench (see
Special Tools) to loosen nuts from rotor shaft.
NOTE: Typically, two (2) washers (item 12) are used to
prevent rotor from contacting rotor housing assembly.
4
1
3
7.
(item 12) from shaft. Locate and retrieve woodruff key.
Slide spacer (item 6), rotor assembly and washer(s)
1
1
2
NOTE: Component parts for the rotor assembly are not
available. If rotor damage exists, replace complete rotor
assembly.
2
1
Installation (Fig. 5)
5
1.
Position woodruff key in slot in rotor shaft. Slide
3
washer(s) (item 12), rotor assembly and then spacer
(item6)ontoshaft.Makesurethatrotordoesnotcontact
rotor housing. If necessary, add additional washer(s) to
allow proper clearance.
2.
Clean rotor shaft threads with brake parts cleaner or
similar non--oily cleaner and allow to dry. After cleaner
dries completely, apply Loctite Primer N (or equivalent)
to shaft threads. Allow primer to dry completely.
Figure 6
1.
2.
3.
Screw
4.
5.
Top grill
Side grill
Washer
3.
shaft.
Apply Loctite #242 (or equivalent) to threads of rotor
Flange nut
ProForce Debris Blower
Page 5 -- 7 Rev. A
Blower Assembly
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