Grove Published 11-10-2014, Control # 524-00 3-1
RT880E SERVICE MANUAL ELECTRIC SYSTEM
SECTION 3
ELECTRIC SYSTEM
SECTION CONTENTS
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Cab Electrical Panel . . . . . . . . . . . . . . . . . . . . . . . 3-3
Carrier Electrical Panel . . . . . . . . . . . . . . . . . . . . . 3-6
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
General Troubleshooting . . . . . . . . . . . . . . . . . . . 3-9
Troubleshooting Swivel-Caused Electrical
Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Connector Troubleshooting . . . . . . . . . . . . . . . . . 3-9
Alternator/Charging System Troubleshooting . . . 3-11
Alternator Replacement . . . . . . . . . . . . . . . . . . . 3-12
Starter Replacement. . . . . . . . . . . . . . . . . . . . . . 3-12
Battery Replacement . . . . . . . . . . . . . . . . . . . . . 3-13
Relay Panel Component Replacement. . . . . . . . 3-13
Gauge Cluster Replacement . . . . . . . . . . . . . . . . 3-14
Rocker Switch Replacement . . . . . . . . . . . . . . . . 3-14
Ignition Switch Replacement . . . . . . . . . . . . . . . . 3-15
Turn Signal Lever and Transmission Shift Lever
Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Windshield Wiper Assembly Replacement . . . . . 3-19
Windshield Washer Assembly Replacement . . . . 3-20
Skylight Wiper Assembly Replacement . . . . . . . . 3-20
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . 3-21
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Beacon Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Boom Mounted Floodlights . . . . . . . . . . . . . . . . . 3-21
Rear View Mirror . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Air Conditioner. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Cold Weather Operation . . . . . . . . . . . . . . . . . . . 3-21
DESCRIPTION
General
The electrical system is 12-volt operation with 12-volt
starting, consisting of an alternator and three lead-acid
batteries. The system is single wire negative ground return
type.
Electrical power is transferred to and from the carrier and
superstructure through the electrical swivel. The CAN bus
system consists of many control modules which are located
on the carrier, superstructure, and operator’s cab. Refer to
Figure 3-1 for a list of the different control modules and their
locations. For more detailed information on the electrical
swivel, refer to Electrical Swivel, page 6-16.