Figure 3-15. Voltage regulator adjustment (sheet 1 of 5).

TM 10-3930-242-34

Figure 3-15. Voltage regulator adjustment (sheet 1 of 5).

g. Reassembly. Refer to figure 3-17 and reas-

(2) Test the field coils for an open circuit

s e m b l e the starter.

and grounds with a multimeter and with the

h. Bench Testing.

f i e l d coil assembly installed in the starter hous-

(1) No load test. Connect a 24-volt battery in

ing as instructed in TM 5-764. Test between the

series with a load rheostat and an ammeter

t e r m i n a l stud and each of the four leads of the

shunt of a capacity greater than 50 amperes and

field coil. If the multimeter fails to indicate con-

c o n n e c t this group to the starter terminal and

tinuity on anyone of the above tests, replace the

t h e starter housing. Connect an ammeter to the

field coil.

shunt and a direct current voltmeter to the

( 3 ) Test between the terminal stud and the

s t a r t e r terminal and starter housing. With the

s t a r t e r frame. If the multimeter indicates con-

voltage adjusted to 22.5 volts, the current

t i n u i t y the terminal stud is grounded and the

should be 80 amperes maximum at 3,600 rpm. If

insulating washer on the insulating bushing

t h e current and speed are both low, inspect for

m u s t be replaced.