Warner Electric PCBC-500 Clutch_Brake Coupling - Manual (Page 19)

3. Mount the magnet to the magnet hub using
capscrews and lockwashers. (Figure 15)
4. Secure the lead wires to the magnet terminals
with screws and lockwashers.
5. Pull the rubber terminal caps over the
terminals.
6. Pull the excess lead wire length from the back-
side of the collector ring (away from the magnet)
until the wire is snug.
7. Tighten down the screw in the collector ring.
The sharp cone point on the screw should
pierce the lead wire insulation to make a good
electrical contact. The head of the screw should
be below the surface of the collector. (Figure 16)
8. Cut off the excess wire.
Figure 14
Figure 15
F. Mounting the Magnet and Magnet Hub
The magnet and magnet hub are mounted on the shaft
with a taperlock bushing. All parts must be clean and
free from burrs and chips before assembling.
1. Place the bushing into the hub and insert the
key. The key is a side-to-side fit and should not
contact the top of the keyway.
2. Insert the locking setscrews loosely into the
bushing and slide the assembly onto the shaft.
3. Adjust the magnet's position to allow a gap of
1/32 inch between the magnet face and the
armature face. (Figure 17)
Once this gap is set, it will be automatically
maintained for the life of the unit.
4. Secure the magnet's position on the shaft by
alternately tightening each setscrew with a
torque wrench to 175 in. lbs. maximum torque.
During the tightening process the bushing
should be tapped lightly to make
certain it seats-in properly.
G. Mounting the Brushholder
1. The brushholder is mounted on a bracket which
must be furnished by the customer. The bracket
must be firmly secured to prevent vibration
which could cause im proper contact between
the brushes and collector ring.
2. The distance from the centerline of the shaft to
the top of the brushholder should be 4".
Maintaining this dis tance will assure proper
spring tension on the brushes and maximum
wear follow-up. A detailed dimensional
drawing is included with each brushholder.
1/32-inch
Magnet Hub
Armature
Magnet
Figure 17
Figure 16
Warner Electric • 800-825-9050 819-0484 19