22
MAINTENANCE SECTION
TEST AND INSPECTION PROCEDURE
Disconnect the Sander from the air supply hose or
shut off air to the tool before proceeding with the test
and inspection procedure.
Run the performance tests at 90 psig (6.2 bar/620 kPa) air
pressure at the inlet of the tool with an eight foot (2.44 m)
length of 3/4” (19 mm) diameter air supply hose.
1.
Without a sanding pad on the tool, operate the
Sander with the Throttle Lever fully depressed and
check the free speed by applying a hand–held
tachometer to the spindle end. The minimum and
maximum allowable free speeds are as follows:
Model
Stamped
Free Speed, rpm
Minimum
Maximum
99S45
4 500
4 300
4 550
99S60
6 000
5 650
6 050
2. Test the Sander motor for power to determine these
minimum performance levels. The Throttle Lever
must not be actuated repeatedly during the test.
Depress the Lever and hold it in the open position
until the test is complete.
Model
Torque
Speed rpm
ft–lb
Nm
99S45
3.80
5.15
3 300
99S60
3.50
4.75
4 400
3.
There must be no objectionable leaks in any non–ex-
haust area. The Throttle must not leak when it is
closed.
4.
There must be no leaks past the closed Throttle that
will run the motor.
5.
The Sander must start smoothly when the Throttle
Lever is depressed and must shut off completely
when the Throttle Lever is released.
6.
The Sander must be equipped with a spring–loaded
window style Lever Lock (15). The Lever Lock must
return to the locked position when the Throttle Lever
is released.
7.
The tool must run smoothly without noticeable vibra-
tion or unusual sound.
8.
The Arbor (29) must turn freely with no evidence of
brinelled bearings.
9.
The Threads on the arbor must be free of nicks and
damage.
10. The Nameplate must be legible, in place and securely
fastened. Make replacement if necessary.
