Changing Saw Blades; Tilting Mechanism Adjustment; General Maintenance - Powermatic 72 Operating Instructions And Parts List Manual

Model 72 - 12114" Tilting Arbor Saw
OPERATING INSTRUCTIONS
MACHINE INSTALLATION ADJUSTMENTS AND MAINTENANCE cont'd
CHANGING SAW BLADES:
To change a saw blade, disconnect machine from the power source. Remove the table insert. Place
the arbor wrench on the arbor nut (note left-hand threads) and use a block of wood wedged between
the saw blade and table. Remove the arbor nut and collar and saw blade. Install new blade making
sure the cutting edge of the teeth at the top face toward the front of the saw. Slide the collar on the
arbor and start the arbor nut on the threads. Snug the arbor nut against the collar and saw blade using
the wrench and holding the saw balde with the thumb and finger tips. Wedge a block of wood be-
tween the saw blade and table and tighten the arbor nut securely. Replace the table insert and recon-
nect the machine to power source.
TILTING MECHANISM ADJUSTMENT:
If binding occurs in the tilting mechanism, clean off the sawdust and pitch accumulation and regrease.
If binding continues, check the alignment and readjust as required to center the worm with the worm
gear segment on the trunnion. If there is excessive play, loosen cap screws and adjust jackscrews (Fig.IS)
clockwise to raise pinion. A tight mesh without binding is ideal. Retighten mounting screws and check
over the 90
0
to 4S o range of tilt for excessive play or binding. Readjust if required.
GENERAL MAINTENANCE:
Good saw operation requires periodic preventive maintenance. Keep the inside of the cabinet and trun-
nion area clean. A stiff brush will remove sawdust before it cakes and pitch or gum is easily removed
with a commercial solvent or with a good oven cleaner. To accomplish this, remove the table by re-
moving the three mounting screws and exposing the working mechanisms of the saw. After cleaning
the tilting and raising worm and worm gear segments and the trunnions, grease these three areas with
a good grade non-handening grease such as Fiske Company "Lubriplate."
Check periodically for excessive end play in the tilting and raising mechanism and in the saw arbor and
readjust as required.
Check periodically for belt tension and wear. Readjust or replace belt as required.
The table surface must be kept clean and free of rust for best results. Although some
u~ers
prefer a
wax coating, white talcum powder applied with a Ihlackboard eraser rubbed in vigorously once a week
will fill casting pores and form a moisture barrier. This method provides a table top that is slick and
allows rust rings to be easily wiped from the surface. Important also is the fact that talcum powder will
not stain wood or mar finishes as wax pickup does.
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