Locator Block Assembly
The saddle attached to the locking nut covers
the full range of the tool. Locator blocks are
available in 1/8" (3.2 mm) increments, starting at
3/4" (57.2 mm) tube OD.The tube size is
stamped on the side of the block.
The block is placed on the frame of the tool and
the two allen head setscrews are loosely
threaded into the block through the slots in the
frame.
Centering lines are machined into both the
frame and blocks. Matching these lines centers
the tool holder for true tube surfaces.
The frame and the block have angle surfaces
that allow the block to be adjusted to compen-
sate for warped and out-of-round tubes.
Set the block with the lines matching and tighten
both setscrews with the T-Handle wrench pro-
vided.
AdjustingThe Locator Block
Rotate the feed knob counterclockwise until the
tool holder is fully retracted. Place the tool over
the tube to be milled with the blade as close to
the tube end as possible without it touching.
Tighten the locking nut with the locking wrench
provided.
Attach the air hose to the swivel. Depress the
throttle handle fully. Rotate the feed knob clock-
wise until the blade begins to contact the tube
end. Release the throttle handle. Inspect the
tube end to ensure that the blade is cutting
evenly around the outside of the tube. If not, the
locator block must be adjusted to center the
blade.
To adjust the locator block, loosen the locking
nut.Then loosen the two set screws with the T-
Handle wrench and slide the block up or down to
obtain proper alignment.Tighten the set screws.
Repeat the process, making only minor adjust-
ments each time, until the blade cuts evenly.
Once properly positioned, mill the tube end to
the desired height. Always start the rotation with
the blade away from the tube end. Gradually
feed the blade into the tube end and maintain
even pressure throughout the cut.
Loosen the locking nut and move the tool to the
next tube. Repeat the centering procedure to
ensure proper alignment before each cut.
Maintenance
Always use the portable H & S Air Caddy oiler/
filtration system or a quality in-line air oiler.
