JLG 266 LoPro Service Manual - Manual (Page 110)

Electrical System
9.18 266, 307 & 266 LoPro
2. Align the lower alternator mount hole with the lower
mounting bracket on the engine, and insert the lower
mounting capscrew. Be sure to leave enough room
to attach the drive belt.
3. Attach the fan drive belt to the alternator.
4. Adjust the lower belt tensioning bolt to remove
excessive slack from the drive belt. Check for proper
fan belt deflection.
5. Reattach the previously labeled electrical wires to
the alternator.
6. Connect the positive (+) and negative (-) battery
cables to the battery terminals.
7. Close and secure the engine cover.
9.8 ELECTRICAL SYSTEM
COMPONENTS
9.8.1 Load Moment Indicator
The Load Moment Indicator provides a visual indication
for forward stability limitations.
• All five LED’s will light (three green, yellow & red)
and the warning buzzer sounds as the machine
reaches its forward stability limitations.
• The red LED is illuminated when the machine has
reached its forward stability limitations.
• Overload Protection Function (optional). When the
red LED is illuminated the automatic overload
protection function is activated. Boom extension and
lower functions are disabled.
Test the LMI at the beginning of each work shift.
1. Fully retract and level the boom, with no load. Do
not raise the boom during this test.
2. Press the test button on the LMI display. This will
cause all LEDs to flash on and an audible warning to
sound. This indicates that the system is functioning
properly. If the test gives a different result, the
system is not functioning properly and the machine
must be removed from service and repaired before
continued operation.
9.8.2 Load Moment Sensor
Detailed instructions for the load moment sensor can be
found in the appropriate Carraro Axle Repair Manual.
Refer to Section 5.3.3, “Axle Internal Service.”
9.8.3 Back-up Alarm
The back-up alarm is located at the rear of the machine.
When the transmission shift control switch (transmission
control lever) is shifted to the (R) REVERSE position, the
back-up alarm will automatically sound.
Place the transmission control lever in (R) REVERSE to
test the back-up alarm. The back-up alarm must not
sound when the transmission control lever is in (N)
NEUTRAL or (F) FORWARD. Also, with the ignition key
switch in the RUN position, the back-up alarm will sound
when the transmission control lever is shifted into the (R)
REVERSE position.
a. Disassembly
DO NOT disassemble the back-up alarm. Replace a
defective or faulty alarm with a new part.
b. Inspection and Replacement
Inspect the wiring harness connector and alarm terminals
for continuity and shorting. Test the alarm by turning the
ignition key switch to the RUN position and shifting the
transmission control lever into the REVERSE position.
The alarm should sound.
Replace a defective or faulty alarm with a new part.