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2. Resistance test of field coil and stator coil.
Check the resistance between terminals. If re-
sistance is out of specification, coil is broken.
Check the coil connections. I f the coil connec-
tions are good, then the coil is broken inside
and it should be replaced.
F IE LD COIL
TO O I L PRESSURE SWITCH
Field coil resistance: (Green-Black)
4.04 ohms
Stator coil resistance:
(W1-W2, W2-W3.
0.48 ohms
C. Voltage Regulator
The regulator's function is t o passacontrolled amount
of current through the field windings which creates a
magnetic field that produces a charging voltage in the
three stator windings.
white
white
±
10% a t 20°C (68° F)
W3-W1)
10%
C (68° F)
a t 20°
±
-1
1. When adjusting the regulator,
ammeter, and tachometer are necessary. They
are connected as illustrated, and adjustment
should be made in the following sequence:
a. Remove the regulator from the frame, and
check the contact points. I f the point surfaces
are rough, they should be smoothed with sand
paper (No. 500 or No. 600). After sandpaper-
ing, thoroughly clean contact points with con-
tact point-cleaner.
b. Check the core and points for gap adjustment.
If any gap is incorrect, it should be adjusted.
First adjust the core gap and then the point gap.
. . . . . . . .
Core gap
. . .
Point gap.
No adjustment is required for the
NOTE:
yoke gap.
CORE GAP
\
L O C K N U T
RECTIFIER
I
a D.C. voltmeter,
.0.6~1.0mm
.
. .
.
.0.3~0.4mm
A RM ATUR E
LOWER
I
I
\
COIL
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