Snap-on • 19
Use a hand pump grease gun only. A high pressure
gun can burst the lathe casting.
Figure 29 – Cross feed grease fitting
Grease the lead screw drive monthly. Locate the
lead screw drive by pulling the protective boot back.
Figure 30 – Lead screw drive
Oil exposed metal parts periodically to prevent rust.
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 pre-
cision 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 incor-
rect rotor or drum alignment, resulting in inaccurate
reconditioning.
Remove all adapters from the arbor after recondi-
tioning a drum or rotor and wipe them clean – espe-
cially 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, on export models, 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.
Brake Lathes
Relief slot
Feed mechanism lead screw
