ELECTRICAL SYSTEM GRT8100 SERVICE MANUAL
3-12
Published 3/26/2018, Control # 596-05
Table 3-1
General Troubleshooting
NOTE: Make voltage checks at terminations when
components are installed and operating. Make
continuity checks (with batteries disconnected)
when components are isolated or removed.
Troubleshoot per the following guidelines:
1. Use reported symptoms to identify a problem or a
suspect component.
2. Test suspect component per instructions in this section.
Instructions identify fuses and components, and guide
you from the easiest and most likely problems to the
hardest and least likely problems.
3. Using a multimeter, test circuit for continuity if you
suspect a broken circuit, or for voltage if you suspect a
power problem. Check electrical schematic and wiring
diagram for most accurate wiring information.
4. If component proves faulty, replace it with a known
working component. If wiring proves faulty, replace it
with wiring of equal gauge.
5. After troubleshooting, test the repaired circuit. Verify
circuit works properly.
Tools for Troubleshooting
This machine uses a CAN bus Multiplex system. To
effectively troubleshoot the electrical system, you need a
Windows-based PC, CAN-link service software, and a
connection cable. The CAN-link service software and
connection cable are available through Crane Care to
service technicians who have attended the Grove New
Technology training course.
Swivel Electrical Troubleshooting
Many crane component electrical troubles can be traced to
the electrical swivel. Common swivel problems are improper
mounting, foreign material between brushes and slip rings,
worn brushes, improper brush assembly spring tension, and
loose setscrews on the slip ring assembly. Refer to electrical
schematic and wiring diagram for slip ring connections and
amperages.
Connector Troubleshooting
Cause of an electrical problem may be a loose or corroded
connection in pin or socket connectors. Check connectors to
ensure pins and sockets are properly seated and engaged. If
pins and sockets show any signs of corrosion, use a good
quality electrical contact cleaner or fine sandpaper to clean
them. When pins or sockets show signs of arcing or burning,
replace them.
Refer to the following tables listing required tools for
connector maintenance.
Pins and sockets are crimped to the wires and cannot be
removed. Remove pins or sockets from plugs or receptacles
using an extraction tool. Cut wire as close to pin or socket as
possible. After cutting off pin or socket, the wire may be too
short.
Using a wire that is too short will apply tension to the pin,
socket, or wire where they are crimped when pin or socket is
inserted in a plug or receptacle. Add a short length of the
same size wire to the short wire by crimp splice or solder.
Use heat shrinkable tubing or other suitable material to
insulate the splice.
Zone Classification
A Tropical Moist: All months average above 18° C. Latitude 15° - 25° North and South
B Dry or Arid: Deficient precipitation most of the year. Latitude: 20° - 35° North and South
C Moist Mid-Latitude: Temperature with mild winters. Latitude: 30° - 50° North & South
D Moist Mid-latitude: Cold winters. Latitude 50° - 70° North & South
E Polar: Extremely cold winters and summers. Latitude: 60° - 75° North & South
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