South Bend Tools SB1125, Owner'S Manual, Page: 41 / 56

South Bend Tools
For Machines Mfd. Since 11/21 Model SB1125
-39-
S E R V I C E
Aligning Motor Pulley
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.
The motor pulley alignment can be adjusted by
loosening the set screws that secure it to the
motor shaft.
Tools Needed Qty
Straightedge 12" ....................................................1
Hex Wrench
5
⁄
32
" ....................................................1
To align motor pulley:
1. DISCONNECT MACHINE FROM POWER!
2. Lift belt tension lock, then use belt tension
knob to pull motor forward and release belt
tension (see Figure 65).
Figure Figure 65. Location of belt tension lock and belt . Location of belt tension lock and belt
tension knob. tension knob.
Belt Tension Belt Tension
Knob Knob
Belt Tension Belt Tension
Lock Lock
3.
Open belt cover and remove drive belt.
!
Figure Figure 67. Location of set screws. . Location of set screws.
— If pulleys are aligned, no adjustment is
necessary. Proceed to Step 7.
— If pulleys are not aligned, proceed to
Step 5.
5. Loosen set screws on motor pulley (see
Figure 67).
4. Place straightedge against motor pulley and
center pulley (see Figure 66) and check that
they are aligned. There should be no space
anywhere between straightedge or pulleys.
Figure Figure 66. Checking pulley alignment. . Checking pulley alignment.
Center Center
Pulley Pulley
Motor Motor
Pulley Pulley
Straightedge Straightedge
x 2