![Manitowoc Grove YB5515-2 Service And Maintenance Manual Download Page 39](http://html.mh-extra.com/html/manitowoc/grove-yb5515-2/grove-yb5515-2_service-and-maintenance-manual_701236039.webp)
GROVE
Published 1-20-2017, Control# 483-02
3-1
CD5515-2/YB5515-2 SERVICE MANUAL
ELECTRIC SYSTEM
3
SECTION 3
ELECTRIC SYSTEM
SECTION CONTENTS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Main Electrical System. . . . . . . . . . . . . . . . . . . . . . 3-2
Charging System . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Starting Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
General Inspections . . . . . . . . . . . . . . . . . . . . . . . 3-6
Starting Circuit Check . . . . . . . . . . . . . . . . . . . . . . 3-6
Instrument and Light Circuits . . . . . . . . . . . . . . . . 3-7
Wire Harnesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Accessory Circuits . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
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
K n o w t h e e l e c t r i c a l c i r c u i t b e f o r e c o n n e c t i n g o r
disc on nec ting a n ele ct rica l com pon en t. A wro ng
connection can cause personal injury or damage to the
component and/or system.
Reference Only