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ENGINE ELECTRICAL
6D-13
CHARGING SYSTEM
General Description
.........................
. . . .
...............
6D-13
Diagnosis
....................................................................
6D-13
Faulty Indicator Lamp Operation
..........................
6D-14
Undercharged Battery
.............................................
6D-14
Overcharged Battery
...............................................
6D-17
On-Car Service
.........................................................
6D-17
Overhaul
....................................................................
6D-17
Disassembly
..........................................................
6D- 17
Rotor Field Winding Checks
..................................
6D-19
Diode Trio Check
....................................................
6D-19
Rectifier Bridge Check..
..........................................
6D- 19
Stator Checks
...........................................................
6D.20
Brush Holder and Regulator Replacement
............
6D-20
Slip Ring Servicing
..................................................
6D.22
Bearing Replacement and Lubrication
...................
6D-22
Reassembly
..............................................................
6D-24
GENERAL DESCRIPTION
The basic charging system is the SI integral regulator
charging system (Fig. 6D-16 and 6D-17). The components
are connected electrically as shown in Fig. 6D- 18.
Although several models are available with different
outputs at idle and different maximum outputs, their basic
operating principles are the same.
The Delcotron generator features a solid state regulator
that is mounted inside the generator slip ring end frame. All
regulator components are enclosed into a solid mold, and this
unit along with the brush holder assembly is attached to the
slip ring end frame. The regulator voltage setting never needs
adjusting, and no means for adjustment is provided.
The generator rotor bearings contain a supply of
lubricant sufficiently adequate to eliminate the need for
periodic lubrication. Two brushes carry current through the
two slip rings to the field coil mounted on the rotor, and
under normal conditions will provide long periods of
attention-free service.
The stator windings are assembled on the inside of a
laminated core that forms part of the generator frame. A
rectifier bridge connected to the stator windings contains six
diodes, and electrically changes the stator a.c. voltages to a
d.c. voltage which appears at the generator output terminal.
Generator field current is supplied through a diode trio which
also is connected to the stator windings. A capacitor, or
condenser, mounted in the end frame protects the rectifier
bridge and diode trio from high voltages, and suppresses radio
noise.
No periodic adjustments or maintenance of any kind are
required on the entire generator assembly.
NOISY GENERATOR
Noise from a generator may be caused by a loose drive
pulley, loose mounting bolts, worn or dirty bearings, defective
diode. or defective stator.
DIAGNOSIS
A basic wiring diagram showing lead connections is
shown in Figure 6D-20. To avoid damage to the electrical
equipment, always observe the following~precautions:
SLIP RING
END FRAME
END FRAME
bi
NO. 1
NO. 2
TERMINAL
TERMINAL
T E S T
Fig. 6D-16 10-SI Generator
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