98
TRAK Machine Tools
Southwestern Industries, Inc.
ProtoTRAK SMX, K2, K3 & K4 & Retrofit Safety, Installation, Maintenance, Service and Parts List Manual
Figure 37
i00156
5.1.16.1 Drive Belt Replacement for machine with the Spindle Control option
1.
Remove the draw bar and its bushing (remove power drawbar if present).
2.
Remove the three Screws A and use M6 x 35mm screws in the adjacent tapped
holes to remove the Bearing Cap (see Figure 37).
3.
Follow instructions for spindle motor removal and remove motor so top head
housing can be removed with ease.
4.
Remove the six screws “C” that hold the belt housing to the subplate.
5.
Disconnect the spindle control harness at the head control box.
6.
Lift off the belt housing, then remove belt.
5.1.17 Timing Belt Replacement
1. Remove the motor and drive belt.
2. Slide the top or adjustable vari-disc pulley assembly off the shaft.
3. Remove the three M8 screws holding the belt housing base to the gear housing.
4. Lower the quill about 4 inches.
5. Remove the belt housing base and lower or stationary vari-disc pulley assembly.
6. Replace the timing belt.
5.1.18 Brake Shoe Replacement
1. Remove the motor, drive belt and complete Steps 1-5 of the timing belt replacement
procedure.
2. Remove the two M6 cap screws from the bottom of the belt housing base.
3. Separate the belt housing base from the lower or stationary vari-disc pulley. This is a slight press fit.
