-32-
Model G0458Z (Mfd. Since 7/19)
Changing V-Belt
A worn/damaged V-belt will not provide optimum
power transmission from the motor to the drum
belt. Inspect the V-belt closely; if you notice
fraying, cracking, glazing, or any other damage,
replace the belts.
V-belt removal and replacement is simply a matter
of loosening the V-belt, rolling it off of the pulleys,
replacing it with a new belt, then re-tensioning
pulleys.
Items Needed
Qty
Hex Wrenches 4, 8mm ................................ 1 Ea.
Phillips Head Screwdriver #2 .............................1
V-Belt (Part P0458Z069) ....................................1
Straightedge .......................................................1
To replace V-belt:
1. DISCONNECT MACHINE FROM POWER!
2. Remove pulley belt access cover.
3. Loosen motor mount cap screws shown in
Figure 36.
4. Lift motor pulley to de-tension belt, and
tighten motor mount cap screws (see
Figure
36) to keep motor de-tensioned during belt
change.
5. Roll V-belt off both pulleys and install new
V-belt on pulley grooves for desired speed
setting (see
Adjusting Sanding Drum
Speeds on Page 25).
6. Properly tension V-belt (refer to Tensioning
V-Belt on Page 31 for more information).
Figure 36. Belt drive system.
Motor Mount Cap Screws
Sanding
Drum
Pulley
V-Belt
Motor
Pulley
7. Re-install V-belt cover from Step 2.
NOTICE
New V-belts will often stretch and loosen
after approximately 16 hours of use. Check
frequently after installation and re-tension
if necessary.
Pulley alignment is an important factor in power
transmission and belt life. The pulleys should
be parallel to each other and in the same plane
(coplaner) for optimum performance.
Each pulley can be adjusted by loosening the set
screw that secures the pulley to the shaft, sliding
the pulley in/out, and retightening the set screw to
lock the pulley in place.
Items Needed
Qty
Hex Wrenches 4, 8mm ................................ 1 Ea.
Phillips Head Screwdriver #2 .............................1
Pry Bar ...............................................................1
To align pulleys:
1. DISCONNECT MACHINE FROM POWER!
2. Open pulley cover.
3. Looking from top, sight down outside face
of pulleys to see if pulleys are parallel and
aligned with each other (see
Figure 37).
— If pulleys are aligned, go to
Step 9.
— If pulleys are not aligned, perform
Steps
4 –8.
Aligning Pulleys
