Hudson 1955 Rambler, Technical & Service Manual

Page: 58 / 292

NOTE: IT IS NOT NECESSARY TO MEASURE THE
AMOUNT OF CURRENT FLOWING DURING TESTING AND
ADJUSTING. HOWEVER, IT IS IMPORTANT THAT NO
ELECTRICAL LOAD OTHER THAN IGNITION BE ON
DURING TEST.
Cycle the Generator
Method A-Move voltmeter lead from "Bat" to
"Gen" terminal of regulator. Retard genera-
tor speed until generator voltage is reduced
to 2 volts. Move voltmeter lead back to "Bat"
terminal of regulator. Bring generator back
to specified speed and note voltage setting.
Method B—Connect a variable resistance into
the field circuit, as in Figure 18. Turn out
all resistance. Operate generator at speci-
fied speed. Slowly increase (turn in) resis-
tance until generator voltage is reduced to
2 volts. Turn off all resistance again and
note voltage setting (with voltmeter con-
nected as in Figure 13. Regulator cover must
be in place.
To adjust voltage setting, turn adjusting
screw (Fig. 14). Turn clockwise to increase
setting and counterclockwise to decrease
voltage setting.
FIGURE 14— Adjusting Voltage Regulator
Setting
CAUTION: If adjusting screw is turned
down (clockwise) beyond range, spring
support may not return when screw is
backed off. In such case, turn screw
counterclockwise until there is ample
clearance between screw head and spring
support. Then bend spring support up
carefully until it touches the screw
head. Final setting of the unit should
always be made by increasing spring
tension, never by reducing it. If
setting is too high, adjust unit below
required value and then raise to exact
setting by increasing spring tension.
After each adjustment and before taking
reading, replace the regulator cover and
cycle the generator.
Voltage Setting Variable Resistance Method
Connect a variable resistance (not less than
25 watts) and an ammeter into the charging
circuit (in series with battery) at "Bat"
terminal of regulator as in Fig 15.
FIGURE 15— Checking Voltage Regulator with
Variable Resistance Method
Connect a voltmeter from regulator "Bat"
terminal to ground (Fig. 15).
Start generator and adjust variable resis-
tance to obtain a current flow of not more
than 10 amperes. Operate the generator at
specified speed for 15 minutes. Regulator
cover must be in place. (Regulator may now
be considered to be at operating temperature.)
Cycle the generator as explained in "Fixed
1/4 Ohm Resistance Method."
Adjust voltage setting as necessary, as
explained in "Fixed 1/4 Ohm Resistance
Method."
Cut-Out Relay Checks and Adjustments
The cut-out relay requires three checks and
adjustments: Air gap, point spacing and
closing voltage. Air gap and point spacing
must be made with the battery lead dis-
connnected from the regulator.
Air Gap—Place fingers on armature di-
rectly above core, move armature down until
points just close. Measure air gap between
armature and center of core (Fig. 16). Make
sure that the points close simultaneously.
Adjust air gap by adjusting two screws in
back of relay and raise or lower armature as
required. Tighten screws after adjustment.
E L E C T R I C A L
17