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PM-833TV 4-13-21V1.indd Copyright © 2021 Quality Machine Tools, LLC
Section 4 MAINTENANCE
Disconnect 220V power before any
maintenance operation!
RECOMMENDED LUBRICANTS
One-shot lube system: ISO 68 oil, such as Mobil Vac-
tra No. 2, or equivalent
X, Y and Z axis ways (dovetails): ISO 68 oil, Mobil
Vactra No. 2, or equivalent
Visible gears such as quill rack and pinion, Z-axis
bevel gears: light general purpose grease, NLGI No. 2,
or equivalent
X and Y leadscrews: ISO 68 oil, Vactra No. 2 or equiv-
alent
Z leadscrew: ISO 68 oil or NLGI No. 2 grease
GENERAL OILING
Assuming a clean environment – no abrasive particles
or machining debris – lack of proper lubrication is the
main cause of premature wear.
Before starting a work session, and every few hours
thereafter:
1. Check the level of oil in the gearbox.
2. Lubricate all ball oilers.
3. Apply the recommended oil or grease to the lead-
screws.
4. Operate the one-shot lube system (don't overdo —
one pump stroke will usually be enough).
5. To distribute the oil evenly run the headstock up/
down full travel, and the table full travel in X and Y
axes.
Quill rack and pinion
Lower and lock the quill. Using a sti ux brush, clean
the visible portions of the rack and pinion. Raise and
lower the quill to expose the remainder of the working
surfaces, locking and cleaning at each setting.
Remove all machining debris and foreign ob-
jects before lubricating ANYTHING! If need
be, any oil is better than no oil – but use the
recommended lubricants when you can.
Figure 4-1 One-shot lube reservoir
Operate the lever once before each work session, less
frequently if there are visible signs of oil accumulating.
QUILL RACK & PINION
Lower and lock the quill, Figure 4-2. Using a sti ux
brush, clean the visible portions of the rack and pinion.
Raise and lower the quill to expose the remainder of the
working surfaces, locking and cleaning at each setting.
Apply grease to the gear teeth.
Figure 4-2 Quill rack
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