Jet 505720, Operations & Parts Manual

Page: 7 / 16

JET 7
Setup and Assembly
Any missing parts or damage should be reported
immediately to your JET
®
distributor. Do not use a
damaged tool. Read this instruction manual
thoroughly for operation, maintenance and safety
instructions.
Box contents:
1 Pneumatic dual action sander
1 Backing pad
1 Operation and parts manual
1 Warranty card
Operation
The pneumatic sander must
be properly lubricated before operation. See
“Lubrication” section.
Figure 1
1. To install backing pad, turn spindle lock to
engage spindle and keep it stationary.
Thread backing pad onto spindle. Turn
spindle lock to disengage spindle.
2. Mount a 6-in. PSA (Pressure Sensitive
Adhesive) sanding disc (not provided) to the
surface of sanding pad, making sure it is
centered.
3. Adjust speed using air regulator knob.
4. Remove protective cap from air inlet (Figure
1). If an in-line oiler is not being used, add 4
or 5 drops of air tool oil (not included) into the
air inlet.
5. Blow out air line to remove any dirt or
moisture, then connect air supply hose to
tool. Set air pressure to 90 psi.
IMPORTANT: Connecting a quick-change
coupling directly to the tool is not
recommended, as vibration may cause the
connection to fail. Instead, add a leader hose
and install any quick-change couplings
farther down the line.
6. Turn spindle lock to create either random
orbit or simple rotary motion.
7. Press and hold throttle lever to start sander.
Allow tool to reach operating speed before
placing on workpiece. Use both hands to
operate.
8. Release throttle lever to stop sander.
Maintenance
Lubrication
The sander should be lubricated daily (or before
each use) with air tool oil through the air inlet.
During continual operation, it should be re-oiled
every 1 to 2 hours. This can be done with an in-
line oiler, or manually. If done manually, proceed
as follows:
1. Disconnect air hose from tool.
2. Place 4 or 5 drops of air tool oil into air inlet.
NOTE: Air tool oil not provided; it is available
at most major hardware and tool stores. SAE
#10 oil or sewing machine oil may be used
as a substitute. Do not use detergent oil.
3. Re-connect air. Run sander at low throttle
without load for a few seconds to distribute
the oil throughout tool.
4. When finished operating sander, disconnect
air hose. Wipe off housing with a dry cloth.
Place 4 or 5 drops of air tool oil into air inlet;
re-connect air and run tool for a few seconds
to distribute the oil. Disconnect air.
Periodically apply 1 or 2 drops of air tool oil to
throttle lever hinge area, and work lever to
distribute the oil.