JLG 150HAX Service Manual - Manual (Page 78)

SECTION 3 - CHASSIS & TURNTABLE
3-40 – JLG Lift – 3120817
Hayes Coupling
1. Install pump coupling on flywheel and secure with
bolts and lockwashers. Torque bolts to 30 ft. lb. (41
Nm).
BEFORE ASSEMBLING PUMP COUPLING AND PUMP, BE SURE TO
COAT INTERNAL SPLINES OF COUPLING AND EXTERNAL SPLINES
OF PUMP SHAFT WITH TEXACO CODE 1912 GREASE.
2. Attach pump mounting plate adaptor to bell housing
of engine and secure with bolts and lockwashers.
3. Align pump shaft with coupling, push pump into
position and secure with bolts and lockwashers.
3.14 TILT ALARM SWITCH
NOTE: Each machine is equipped with a tilt alarm switch,
factory set to activate at 5 degrees, which will illumi-
nate a warning light, sound a warning horn and cut
out 2 speed drive. Consult factory for tilt sensor
adjustment. The only field adjustment necessary is
leveling the switch on the spring loaded studs. There
are two methods of adjustment, a manual adjust-
ment and an adjustment 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. 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).
1. Coupling
2. Bolt
3. Lockwasher
4. Pump Adapter
5. Bolt
6. Lockwasher
Figure 3-27. Hayes Coupling
X
Y
Y
Figure 3-26. Tilt Switch Adjustment - Manual