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XYZ Machine Tools Ltd
XYZ Bed Mill Safety, Installation, Maintenance, Service & Parts List Manual
2.
Remove the three screws A securing the bearing cap to the head and jack off the cap using M6 x
35mm screws in the adjacent tapped holes (see figure 34).
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.
Lift off the belt housing, then remove belt.
5.1.16
Timing Belt Replacement – SMX 2500
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, stationary vari-disc pulley assembly.
6.
Replace the timing belt.
5.1.17
Brake Shoe Replacement – SMX 2500
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.
4.
Remove the 2 springs.
5.
Replace the brake shoes.
5.1.18
Spindle Replacement - SMX 2500
1.
Remove the drawbar and its bushing.
2.
Lower the quill about 1 inch and lock.
3.
Remove the setscrew from the back of the spindle.
4.
Loosen (unscrew) the large black ring (nosepiece) with a spanner wrench.
Note: The nosepiece has a left hand thread-- rotate anti-clockwise to loosen.
5.
Using a soft bar about 12 inches long, alternately tap on the top of the spindle and loosen a few
threads on the nosepiece until fully unscrewed (the nosepiece will remain attached to the
spindle).
6.
Continue to tap the spindle out of the quill. The spindle bearings will come out with the spindle.
Figure 35 – SMX 2500 - Spindle Replacement
