Specifications

Southwestern Industries, Inc.
ProtoTRAK SMX K2, K3, K4 & Retrofit Safety, Installation, Maintenance, Service & Parts List Manual
104
5.1.15.1 Spindle Motor Removal and Replacement for machine with
the Spindle Control option
1. Disconnect the power to the motor. It is recommended that the power disconnect
be made from the shop feeder box.
2. Disconnect the electrical connection in the conduit box attached to the motor.
3. Remove the three bolts that hold the motor pulley cover in place to gain access to
the belt.
4. Remove the four bolts that mount the motor to the top head housing and slide motor
forward and remove belt.
CAUTION!
The motor is heavy--about 80 pounds. Be certain you have the proper equipment or assistance.
5. Tilt the motor towards the back and remove the belt from the motor pulley. Remove the
motor.
5.1.16 Drive Belt Replacement
1. Remove the motor.
2. Remove the draw bar and its bushing.
3. Remove the three Screws A and use M6 x 35mm screws in the adjacent tapped holes to
remove the Bearing Cap.
4. Remove the nut from the fine speed adjustment Screw B and turn the screw all the way
down through the casting. Catch it from the motor hole.
5. Remove six Screws C holding the belt housing to the subplate.
6. Remove the four screws holding the speed changer.
7. Remove the belt housing.
8. Replace the belt by sliding it over the speed changer.
9. In reassembly be certain the fine speed adjustment Screw B goes into the slot of
the Speed Change Plate D in the area in which the screw is not threaded.