AMMCO 7000 Disc Rotor Lathe - Manual (Page 14)

4. Adjust the drive belt to match the rotor size. Use the outer
pulley groove for all passenger car and light truck rotors, Fig. B
12. Choose one of the inner grooves when machining medium
duty truck rotors.
5. Make sure that the tool bits clear the rotor faces and the
silencer band. Give the rotor a full turn by hand and start the
lathe.
6. Turn each tool bit control (the outer knurled knobs) clock-
wise until the tool bits just contact the rotor faces. When the
tool bits have made contact, rotate each of the inner depth-of-
cut collars to zero and back the tool bits away from the rotor.
From this point on all tool adjustments will be made with the
tool bit controls, Fig. B 13. The inner depth-of-cut collars will be
the reference and should not be moved.
7. Turn the cross feed handwheel until the tool bits are at mid-
point of the rotor face. Turn the left hand tool bit control until the
tool bit contacts the rotor surface and makes a scratch cut no
deeper than .001", Fig. B 14.
Brake Lathes
8 • AMMCO 7000 Brake Lathes
Figure B14
Figure B12
Figure B13