Calibrating Head Tilt - Grizzly G0448 Owner's Manual

Calibrating Head Tilt

Tools Needed:
Wrench 19mm ....................................................1
Wrench 10mm ....................................................1
Hex Wrench 3mm ...............................................1
90˚ Square ..........................................................1
Sliding Bevel Gauge ...........................................1
Phillips Screwdriver ............................................1
The tilting mechanism features positive stops for
calibrating the head position accurately to each
of the tilting positions. In addition to setting these
positive stops during calibration, the scale pointer
should also be aligned with the 0˚ mark.
Figure 32 shows pointer and scale 0 marks
aligned, and Figure 33 shows the positive stops
and head tilt controls.
Scale Mark
Figure 32. Aligned scale and pointer 0 marks.
30˚L Positive
Stop
Front Head
Tilt Bolt
Figure 33. Head tilt controls.
-28-
Qty
Pointer
Rear Head
Tilt Bolt
0˚ Positive
Stop
Tilt Pin
30˚R Positive
Stop
To check the head tilt calibration:
1. Insert a mortising chisel in the chuck and
lower it close to the table.
2.
Use the 90˚ square and bevel gauge at 30˚
(see Figure 34) to check the chisel angle
to the table when the head is in each of the
three positions (30˚ L, 0˚, 30˚R).
—If the chisel angle is correct in all three
positions, then calibration is unnecessary.
—If the chisel angle is incorrect in any of
three locations, then those stops must be
calibrated.
Checking
with a Bevel
Gauge at 30˚
Figure 34. Checking head tilt angles.
To calibrate any of the positive stops:
1. Loosen the hex nut securing the stop.
2.
Adjust the stop position and check the new
chisel angle, repeating as necessary until the
angle is correct.
3.
Hold the stop in position and tighten the hex
nut, so the stop cannot move.
To adjust the scale pointer:
1.
Make sure the head is calibrated to 90˚.
2.
Loosen the pointer screw, and adjust the 0
mark on the pointer even with the 0 mark on
the scale.
3. Tighten the pointer screw.
G0448 Mortising Machine
Checking
with a 90˚
Square