18 • Snap-on
Brake Lathes
14.
Recheck the setting of the depth-of-cut collars
which were set to zero earlier by moving the tool bits
inward until they just contact the surfaces of the rotor.
The collars should be at zero. Reset the collars if nec-
essary.
15.
Turn the cross feed handwheel clockwise until
the tool bits are near the rotor hub.
16.
Turn the lathe ON.
17.
Turn both tool bit controls to the desired depth-
of-cut and lock them in position by tightening the red
lock knobs above the tool bits.
Note:
Either rough or finish cuts may be taken to
resurface a rotor. Generally, finish cuts should be
0.004” (0.10 mm) to 0.006” (0.15 mm) per side. Very
shallow cuts of less than 0.004” (10 mm) per side
tend to reduce tool bit life because the heat generated
during reconditioning isn’t transferred to the rotor effi-
ciently. Rough cuts may be taken from 0.006” to
0.010” per side.
18.
Engage the automatic cross feed by moving the
lever to the desired speed. The cross feed will stop
automatically when the
cutting tools have moved
all the way across the
face of the rotor.
Note:
For roughing cuts,
move the cross feed lever
to the FAST position.
Figure 26 – Engage auto-
matic cross feed
Maintenance and
Service
Oiling
The lathe is shipped from the factory with the cor-
rect amount and type of oil. Check oil level frequently,
and refill as necessary with EP-80-90 gear oil.
Figure 27 – Oiling
After every 500 hours of use, drain the oil and refill
to the appropriate level on the dipstick with clean EP-
80-90 gear oil. Use the oil drain plug on the front of the
lathe to drain the old oil.
Figure 28 – Drain plug location
The Infimatic
®
Variable Feed Gearbox and the disc
brake feed mechanism assemblies are filled with a
special lubricant and need no further internal lubrica-
tion.
Lubricate the cross feed once each month with an
automotive chassis grease. Pump the grease into the
fitting until clean grease comes out the relief slot at
the base of the fitting.
Oil drain plug
Fast
Slow
Neutral
