E - Electrical connections for testing voltage
F - Electrical connections for testing current regulator
regulator
MEC 3810-27-15/56(2)
Figure 56-Continued.
adjusting screw. Measure the air-gap
points
are
barely
touching.
between the coil core and the armature
Measure the air-gap between the
of the voltage regulator.
Do not
coil core and the armature. The
measure between the core residual
correct air-gap for the cutout relay is
brass pin and the armature.
The
0.048 inch.
correct voltage regulator air-gap is
(d) Should the cutout relay air-gap not
0.084 inch.
be as specified, bend the armature
(h) Adjust the current regulator air-gap to
stop up or down to obtain the proper
0.115 inch in the same manner as for
clearance.
the voltage regulator unit described in
g above.
Caution:
Make certain the cutout relay contact
Note.
bracket is in proper position to allow
Refer to C, figure 56 and polarize the
both contact points to close
simultaneously.
(2) Electrical adjustments. Install set of test
(e) Measure the clearance between the
adapters as illustrated in figure 56.
contact points. The proper cutout
relay point opening is 0.036 inch.
(a) Cutout relay closing voltage.
With
voltmeter connected as shown in D,
(f) If the cutout relay point opening is
not as specified, loosen the two
increase speed until the cutout relay
screws securing the cutout relay
contact points close. Observe voltage
contact bracket to the cutout relay
reading at which this occurs. It should
and raise or lower the cutout relay
be 25 to 27 volts. If adjustment is
contact bracket until the specified
necessary, turn the adjusting screw
air-gap is obtained. Secure the
clockwise
to
increase
or
adjustment by tightening the two
counterclockwise to decrease closing
screws.
voltage. Set closing voltage at 26
(g) Push down on the voltage regulator
volts.
armature until the voltage regulator
contact point barely touches the
AGO 6819A
98
