Figure 4-26. Cutout relay test setup.

(c)

Electrical

test.

1. Connect test equipment (fig. 4-26).

Figure 4-26. Cutout relay test setup.

a m m e t e r reads 8 to 10 amperes, then slowly

2. W i t h e n g i n e r u n n i n g , r e g u l a t o r

decrease speed while watching ammeter. Ammeter

warmed up and battery fully charged, decrease

pointer will move to left of zero, then suddenly

engine speed until voltmeter reads less than battery

return to zero as speed is further decreased.

voltage and ammeter reads steady on zero. Cutout

relay points are now open.

Note. Opening amperage of cutout relay is the

3. Very slowly increase engine speed (by

greatest discharge reading obtained before pointer returns to

turning carburetor idle speed adjustment screw) so

zero. Opening amperage should be 3.0 to 5.0 amperes.

that voltmeter reading builds up a fraction at a

5. Repeat steps 3 and 4 several times to

time. Keep glancing at ammeter after each increase

assure, an accurate test.

in voltage.

6. If closing voltage is not within limits,

Note. Closing voltage of cutout relay is the highest

bend lower armature spring anchor (fig. 4-27). If

voltmeter reading obtained just before ammeter pointer moves

opening amperage is not within limits, recheck

off zero. Closing voltage should be 12.6 to 13.6 volts.

point opening (subpara (1) b) a b o v e .

4. Continue to increase engine speed until