Section III. OPERATOR MAINTENANCE

Section III. OPERATOR MAINTENANCE

b. Remove the generator end cover (para 53).

38. General

c. Raise the excitation brush from the commutator

The instructions in this section are published for the

information and guidance of the operator to maintain the

welding machine.

d. Connect the negative terminal of a 6- to 12-volt

battery to the excitation brush stud.

39. Correcting Polarity

e. Touch the positive terminal of the battery to the

The welding generator terminals have been marked

bottom main brush stud for approximately 2 seconds.

for straight polarity (electrode terminal negative). If the

Lower the excitation brush and replace the

polarity should become reversed, it may be corrected

generator end cover. The polarity will be correct when

after the motor has stopped.

the welding machine is next used.

g. Remove the cause of reversal in polarity.

a. Adjust the current selector for maximum current with

(Refer to Troubleshooting para 40).

electrode selector on any setting.

AGO 8244A