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Kawasaki KZ1300-A1 Quick Reference Manual Page 232

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MAINTENENCE--ELECTRICAL
If it will take a charge so that the voltage and specific
gravity come up to normal, it may be considered good
except in the following case:
*
If the voltage suddenly jumps to over 13 volts just
after
the
start of charging, the plates are probably sul-
phated. A good battery will rise to 12 volts immediately
and then gradually go up to 12.5'"" 13 volts
in
about
30 to 60 minutes after charging is started.
*
If one cell produces no gas bubbles, or has a very low
specific gravity, it
is
probably shorted.
*
If there does not appear to be enough sediment to
short the plates, but one cell has a low specific gravity
after the battery is fully charged, the trouble may be
just that there is insufficient acid in that cell. In this
instance only, sulphuric acid solution may be added to
correct the specific gravity.
*
If a fully charged battery not
in
use loses
its
charge
after 2 to 7 days, or if the specific gravity drops mark·
edly, the battery is defective. The self-discharge rate
of a good battery
is
only about 1
%
per day.
CHARGING SYSTEM
The charging system consists of an alternator and
an integrated regulator/rectifier.
The alternator generates the current required by the
electrical circuits. The generated current is a three phase
alternating current (AC), which is changed to direct
current (DC) and controlled by a solid-state regulator/
rectifier to supply an even voltage to the circuit com-
ponents.
Alternator
The
alternator
is made of
a
rotor
el'
and
stator
iJ)
.
The stator is mounted in the alternator
cover(i~
,
while
the
rotor
is
secured to the right end of the crankshaft
1l
and rotates at engine rpm.
Permanent magnets in
Charging System
Regulator/ Rectifier
the rotor supply the magnetic field for the stator so
that no slip rings or brushes are necessary, making the
alternator practically maintenance free.
The stator consists of three sets of coils would
on laminated steel cores.
The-
s e coils are connected
in a Y -connection to produce a three-phase alternating
current. Since the voltages of these three-phases overlap,
there is a continuous, even supply of current for the
circuit components.
Alternator Construction
1. Cran kcase
6. Mounting Bolt
2. Cylinder Block
7. Mounting Bolt
3. Knock Pin
8. Alternator Cover
4. Alternator Rotor
9. Crankshaft
5. Alternator Stator
10. Connecting Rod
Brown
;------t----t--~
White/Red
Alternator
"2
......
c: ._
o
c:
U::J
Rectifier
Regulator
Circuit
Circuit
Black
232

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