JLG 40RTS Service Manual - Manual (Page 28)

SECTION 2 - PROCEDURES
2-12 – JLG Sizzor – 3120826
2.12 TILT ALARM SWITCH
NOTE: The machine is equipped with a tilt alarm switch fac-
tory set to activate at 3° and will sound an alarm and
illuminate a warning light on the platform control con-
sole. Consult factory for tilt switch adjustment. The
only field adjustment necessary is leveling the switch
on the spring loaded studs. There are two methods
of adjustment, a manual adjustment and an adjust-
ment using a voltmeter.
PERFORM TILT ALARM SWITCH LEVELING PROCEDURE A MINI-
MUM OF EVERY SIX MONTHS TO ENSURE PROPER OPERATION
AND ADJUSTMENT OF SWITCH.
Manual Adjustment
1. Park the machine on a flat, level surface and ensure
machine is level.
NOTE: Ensure switch mounting bracket is level and securely
attached.
2. Level the base of the indicator by tightening the
three flange nuts. Tighten each nut through approxi-
mately one half of it’s spring’s travel. DO NOT
ADJUST THE “X” NUT DURING THE REMAINDER
OF THE PROCEDURE.
3. With the electrical connections complete, slowly
tighten one of the “Y” nuts until the circuit is closed
and the light on the Platform Control Console illumi-
nates.
4. Slowly back off the nut, counting the number of
turns, until the circuit is again closed and the light
again illuminates.
5. Divide the number of turns determined in step (4) in
half. Tighten the nut this many turns. The line deter-
mined by this nut and the “X” nut is now parallel to
the ground.
6. Repeat steps (3) through (5) for the remaining “Y”
nut. The switch is now level.
7. Individually push down on one corner at a time;
there should be enough travel to cause the switch to
trip. If the switch does not trip in all three tests, the
flange nuts have been tightened too far. Loosen the
“X” nut and repeat steps (3) through (7).
Voltmeter Adjustment
1. Park machine on a flat, level surface and ensure
machine is level.
2. If motor is not running, turn ignition switch to ON.
3. Connect black lead of voltmeter to ground and red
lead to yellow wire protruding from pot on bottom of
sensor.
4. Adjust leveling nuts to obtain the highest possible
voltage reading.
5. Check voltage at trip point in all four directions. If
voltage reading is not symmetrical, repeat step (4)
above.
Figure 2-15. Tilt Alarm Switch - Manual Adjustment