1
CAUTION
Do not at any time attempt to operate this tool without shroud and pad in place.
OPERATION
The sander is designed to operate on 90 p.s.i. air pressure. An air regulator is recommended if pressures are higher than 90
p.s.i. A filter is strongly recommended to provide clean air for long life of the sander.
Lubricate the sander by adding 8-10 drops of air motor oil into the air inlet each day before using.
HOSE AND HOSE CONNECTIONS
Hoses should not be smaller than 3/8" I.D. with 1/4" pipe thread fittings.
LUBRICATION
As mentioned above, 8-10 drops of Sioux air motor oil, Cat. No. 288, should be added to the air intake before using each day.
This will help protect the motor parts from rusting due to water in the air lines and also lubricate the parts for longer life. Caution
should be taken not to add too much oil as it will blow through the tool and may get on the surface being sanded. An air line oiler
will increase the life of the tool. The setting should be about 1 drop of oil per 1-2 minutes of use.
SPEED CONTROL AND SHUT OFF
A speed control and air shut off is located on the bottom of the housing. This
control is adjusted as shown in the diagram. This is to control the speed of the
tool for various sanding operations and to control excessive air pressure. The
control is also used to shut off the air to the tool to safely change sand paper on
the pad.
COUNTER BALANCE
The units are equipped with different counterweights to decrease the vibration.
Following is a chart of pad size and counterweight.
APPROX.
PAD SIZE
PAD WEIGHT
COUNTER WEIGHT
5"
90-100 Grams
64141 W/Lockout
6"
115-125 Grams
64148 W/Lockout
5"
90-100 Grams
64140 WO/Lockout
6"
115-125 Grams
64147 WO/Lockout
LOSS OF POWER & SPEED
The air motor is probably dirty and sticky. Flush out by adding very light weight oil to the air intake and run unit. Do this
several times until it runs properly. Then add 8-10 drops of Sioux air motor oil, Cat. No. 288, in the air intake and run tool to
lubricate.
WARNING
Continued exposure to vibration may cause injury to your hands or arms.
INSTRUCTIONS & PARTS LIST FOR
NO. 658, 660, 690, 697
SIOUX AIR RANDOM ORBITAL SANDER
INCLUDES B, V, VV, & X SUFFIXES
(SERIAL “E”)
Form Z262A
Date 1-02/C
Page 1 of 6
Printed In U.S.A.
MAXIMUM SPEED
COUNTERWEIGHT
OFF
Summary of Contents for 658
Page 5: ...5 NOTES ...
