Manitowoc Grove RT770E - Section 3 Electrical System

3-1
Published 11/26/2014, Control # 447-05
RT770E SERVICE MANUAL ELECTRICAL SYSTEM
3
GROVE
SECTION 3
ELECTRICAL SYSTEM
SECTION CONTENTS
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Cab Electrical Panel . . . . . . . . . . . . . . . . . . . . . . . 3-3
Carrier Electrical Panel . . . . . . . . . . . . . . . . . . . . . 3-5
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
General Troubleshooting . . . . . . . . . . . . . . . . . . . 3-8
Tools for Troubleshooting . . . . . . . . . . . . . . . . . . . 3-8
Troubleshooting Swivel-Caused Electrical
Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Connector Troubleshooting . . . . . . . . . . . . . . . . . 3-8
Alternator/Charging System Troubleshooting. . . . 3-9
Alternator Replacement . . . . . . . . . . . . . . . . . . . 3-11
Starter Replacement. . . . . . . . . . . . . . . . . . . . . . 3-11
Battery Replacement . . . . . . . . . . . . . . . . . . . . . 3-12
Relay Panel Component Replacement . . . . . . . . 3-12
Gauge Cluster Replacement . . . . . . . . . . . . . . . . 3-13
Rocker Switch Replacement . . . . . . . . . . . . . . . . 3-13
Ignition Switch Replacement . . . . . . . . . . . . . . . . 3-14
Turn Signal Lever and Transmission Shift
Lever Replacement . . . . . . . . . . . . . . . . . . . . . . . 3-15
Windshield Wiper Assembly Replacement . . . . . 3-16
Windshield Washer Assembly Replacement . . . . 3-18
Skylight Wiper Assembly Replacement . . . . . . . . 3-18
Tools for Troubleshooting . . . . . . . . . . . . . . . . . . 3-19
Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . 3-19
Beacon Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Boom Mounted Floodlights . . . . . . . . . . . . . . . . . 3-19
Rear View Mirror . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Air Conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Cold Weather Operation . . . . . . . . . . . . . . . . . . . 3-19
DESCRIPTION
General
The electrical system is 12-volt operation with 12-volt
starting, consisting of an alternator and three lead-acid
batteries. 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 Swing System, page 6-1.