AMMCO 7700 Drum and Disc Brake lathe - Manual (Page 19)

AMMCO Drum & Disc Brake Lathes • 15
Cleaning
Keep the lathe as clean as possible for trouble-free
operation, as well as safety and longer lathe life. Use a
brush to sweep metal chips and dust off the lathe.
Do not use compressed air to blow the lathe clean.
Chips and dust may be driven between machined parts
and into bearings, causing undue wear.
Care of Arbors and Adapters
Although the adapters, arbors, and spindle are made
of top grade steel and are turned, hardened, and preci-
sion ground to close tolerances, great care should be
taken in their use, handling, and storage. Even the
smallest nick, scratch, or loose chip can cause incorrect
rotor or drum alignment, resulting in inaccurate recon-
ditioning.
Remove all adapters from the arbor after recondition-
ing a drum or rotor and wipe them clean – especially
the inboard adapter. When a finished drum or rotor is
removed from the arbor, the inboard adapter may
move slightly away from the face of the arbor and allow
metal chips to fall into the opening, causing a poor
mounting for the next drum or rotor.
Regularly inspect the faces and seating tapers of the
adapters for nicks and scratches, correct any flaw with
a fine stone. If the damage cannot be corrected,
replace the adapter. Handle the adapters and arbors
with care and store them on individual hooks. Do not
throw them into a box. The adapters are designed for
mounting drums and rotors only. Do not misuse the
adapters.
Shear Gear Replacement
The shear gear is located in the drive housing under
the dot plug cover. It is designed to “ strip out” and
prevent gearbox damage should a tool accidentally jam.
Remove the dot plug button. Remove the C-clip.
Remove the shear gear. Remove any stripped teeth
from the drive housing. Install the new gear. The con-
cave side of the C-clip faces the gear to maintain pres-
sure. Replace the dot plug button.