Manitowoc Grove CD3340B User Manual

GROVE 3-1
CD3340B/YB4411 ELECTRIC SYSTEM
3
Published 04/07/2015 Control # 569-00
SECTION 3
ELECTRIC SYSTEM
SECTION CONTENTS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Comparing Electrical System to a Hydraulic
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Magnetism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Main Electrical System. . . . . . . . . . . . . . . . . . . . . . 3-3
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Wire Harnesses . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Fuse and Relay Replacement. . . . . . . . . . . . . . . . 3-3
Charging System . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Alternator and Voltage Regulator . . . . . . . . . . . . . 3-7
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Special Precautions . . . . . . . . . . . . . . . . . . . . . . . 3-7
Battery Maintenance and Charging . . . . . . . . . . . 3-7
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . 3-8
Starting Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
General Inspections . . . . . . . . . . . . . . . . . . . . . . . 3-8
Starting Circuit Check . . . . . . . . . . . . . . . . . . . . . . 3-8
Instrument and Light Circuits . . . . . . . . . . . . . . . . 3-9
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Light Bulbs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Gauges and Indicators. . . . . . . . . . . . . . . . . . . . . . 3-9
ECM Display Toggle Switch . . . . . . . . . . . . . . . . . 3-9
Accessory Circuits . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Anti-Double Blocking System . . . . . . . . . . . . . . . 3-10
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Wire Harnesses . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Engine Wire Harness. . . . . . . . . . . . . . . . . . . . . . 3-11
Transmission Wire Harness. . . . . . . . . . . . . . . . . 3-11
Main Frame Wire Harness. . . . . . . . . . . . . . . . . . 3-11
Instrument Panel Wire Harness. . . . . . . . . . . . . . 3-11
Cab Wire Harness . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Charging System Troubleshooting . . . . . . . . . . . 3-19
Starting System Troubleshooting. . . . . . . . . . . . . 3-20
GENERAL
To aid in the understanding and troubleshooting of an
electrical system, review the terms and information that
follows.
Electrical Energy - power which comes from the movement
of electrons. Electrons are particles with a negative charge.
Electrons will collect around particles with a positive charge,
called protons, until an electrical imbalance occurs.
Amperage - rate of flow of electrons (CURRENT), measured
in amperes.
Voltage - the electromotive force (EMF) which causes
electrons to move through an electrical circuit, measured in
volts.
Resistance - any resistance to flow of electrons in an
electrical circuit, measured in Ohms.
Ohm’s Law - “Electric current increases in direct relation to
the voltage and decreases in relation to the amount of
resistance in any circuit.”
To Find:
EMF (Voltage) - Multiply CURRENT (amps) by
RESISTANCE (Ohms)
RESISTANCE (Ohms) - Divide EMF (voltage) by
CURRENT (amps)
CURRENT (Amps) - Divide EMF (voltage) by
RESISTANCE (Ohms).
Consider the following when trying to find trouble in an
electrical system:
1. Current always flows from (+) positive to (-) negative, or
from the point of highest voltage.
2. Because the system used on this machine is a negative
ground system, current that leaves the supply (battery)
returns to the supply (battery).
CAUTION
Know the electrical circuit before connecting or
disconnecting an electrical component. A wrong
connection can cause personal injury or damage to the
component and/or system.
Reference Only

Manitowoc Grove CD3340B Specifications

General

Brand	Manitowoc
Model	Grove CD3340B
Category	Construction Equipment
Language	English