Aligning Pulleys - Grizzly G0925 Owner's Manual

Aligning Pulleys

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
(coplanar) for optimum performance.
Each pulley can be adjusted by loosening the set
screws that secure them to their respective shafts.
Tools Needed
Hex Wrench 3mm .............................................. 1
Straightedge 12" ................................................ 1
To align pulleys:
1. DISCONNECT MACHINE FROM POWER.
2. Open belt cover.
3. Turn belt tension knob counterclockwise to
loosen motor tension spring (see Figure 42).
Figure 42. Belt tension knob location.
4.
Pull motor toward front of drill press and
remove V-belt.
Note: If V-belt is tight, have an assistant pull
motor while you change drill speeds.
Use care when handling V-belts as they
could pinch your fingers. They may also
get hot after extended use so wait to han-
dle if drill has been in use.
— If drive belt is cracked, torn, excessively
worn, or damaged, replace it.
Model G0925 (Mfd. Since 02/20)
Qty
Belt Tension
Knob
5. Place a straightedge against both pulleys
(see Figure 43) and check that they are
aligned. There should be no space anywhere
between straightedge or pulleys.
— If pulleys are aligned, proceed to Step 8.
— If pulleys are not aligned, proceed to
Step 6.
6. Loosen set screw on spindle pulley shown in
Figure 43.
Spindle Pulley
Set Screw
Figure 43. Checking pulley alignment.
7.
Use straightedge to adjust pulley on shaft
until it aligns with motor pulley, then tighten
set screw from Step 6.
8.
Replace V-belt and move onto desired sheave
on motor and spindle pulleys.
9.
Push motor away from drill press to increase
belt tension and tighten belt tension knob to
secure.
Note: Belt should be tight enough to pre-
vent slippage. Correct tension is set if belt
flexes ⁄ " when thumb pressure is applied
1
4
at midpoint of belt between pulleys (refer to
Changing Spindle Speeds on Page 20 for
more information).
-31-