Warner Electric SFPBC-500, SFPBC-650 - Manual (Page 17)

17 Warner Electric • 800-825-9050 P-202-01 • 819-0482
should be tapped lightly to make certain it
seats in properly.
F. Mounting the Field-and-Rotor Assembly
1. Insert a key into the keyway in the bore of the
rotor, and slide the assembly onto the shaft.
2. Adjust the rotor’s position on the shaft to
allow ap prox i mate ly 1/32'' between the faces
of the rotor and armature. Secure the rotor in
this position by al ter nate ly tightening the two
locking screws. Once this 1/32'' gap is set, it
will be automatically maintained throughout
the life of the unit. (Figure 15)
3. Secure the assembly on the shaft by
alternately tight en ing the two setscrews.
4. A tab or torque arm is provided to prevent
the field from rotating with the shaft. Insert
either a pin in the U-slot or a fork around the
torque arm to prevent this rotation. Under no
circumstances, however should the
field be so tightly restrained that it preloads
the bearing. (For more information on torque
tabs, see page 18.)
Rotor
1/32 inch Gap
Armature
1/32 inch Gap
Figure 15