Figure 6-5. Generator regulator cutout relay adjustment.

Figure 6-5. Generator regulator cutout relay adjustment.

are properly lined up and tighten the screws well after

contact screw.

The most convenient method of

adjustment.

performing this operation is to insert the gauge, press

the armature down against it to hold it in place, and then

turn the contact screw until the contacts barely touch.

(3) With the battery disconnected, refer to

figure 6-5; measure the point opening and adjust to .035

(5) Connect the generator regulator and

inch by bending the upper armature stop.

generator in a circuit as shown in figure 6-6 and check

the cutout relay (circuit breaker) opening and closing.

(4) Refer to figure 6-4 and check the air gap

With the field rheostat set at maximum resistance, start

of the voltage regulator unit and current regulator unit.

the engine and operate it at 2250 rpm. Adjust the field

The air gap should be measured between the armature

rheostat while watching the voltmeter. Check the

and the part of the core (not the residual pin in the core)

closing voltage of the cutout relay contacts. It must be

next to the residual pin, with the points just touching.

25 to 27 volts as indicated on the voltmeter. Refer to

Measure the air gap by pushing the armature down until

figure 6-5 and adjust the closing voltage, if necessary.

the points open, release until the points barely close,

then measure the air gap. Do not measure the gap with

(6) Connect the generator regulator and

the fiat spring that supports the contact screw raised up

generator in a circuit as shown in figure 6-6 and check

off the fiber mounting plate. Adjust the air gap to .087

the voltage regulator operating volt

inch by loosening the locknut and turning 6-6 the

6-6