TM 9-4940-549-14&P
NOTE:
ALL DIRECT CURRENT WELDER
NOTE:
BRUSHES ARE REPLACED IN A
IN A SIMILAR MANNER.
SIMILAR MANNER.
B.
SLIP
RING
AND
EXCITER
BRUSHES.
A.
DIRECT
CURRENT
WELDER
BRUSHES.
STEP 1. TAG AND DISCONNECT BRUSH
STEP 1. TAG AND DISCONNECT BRUSH
AND ELECTRICAL LEADS AS
AND ELECTRICAL LEADS AS
NECESSARY.
NECESSARY .
STEP 2. LIFT BRUSH SPRING AND
STEP 2. LIFT BRUSH SPRING AND RE-
REMOVE BRUSH FROM HOLDER.
MOVE BRUSH FROM HOLDER.
REPLACE BRUSHES THAT ARE
REPLACE BRUSHES THAT ARE
WORN TO LESS THAN THREE-
WORN TO LESS THAN THREE-
STEP 3. LIFT BRUSH SPRING AND
STEP 3. LIFT BRUSH SPRING AND
PLACE BRUSH IN HOLDER.
PLACE BRUSH IN HOLDER.
STEP 4. CONNECT AND SECURE TAGGED STEP
4. CONNECT AND SECURE TAGGED
BRUSH AND ELECTRICAL LEADS.
BRUSH AND ELECTRICAL LEADS.
STEP 5. SEAT BRUSHES AS PRESCRIBED
STEP 5. SEAT BRUSHES AS PRESCRIBED
STEP 6. MEASURE BRUSH SPRING TEN-
STEP 6. MEASURE BRUSH SPRING TEN-
SION AT FREE END OF BRUSH
SION AT FREE END OF BRUSH
SPRING. PROPER BRUSH
SPRING TENSION IS 24 TO
SPRING TENSION IS 8 TO 12
32 OUNCES. ADJUST BRUSH
OUNCES. ADJUST BRUSH
SPRING TENSION BY LOOSEN-
SPRING TENSION BY MOVING
ING LOCK NUT AND TURNING
FREE END OF BRUSH SPRING
SPRING MOUNTING SCREW.
FROM NOTCH TO NOTCH OF
AFTER PROPER BRUSH TEN-
SPRING ADJUSTING WASHER.
SION IS OBTAINED, TIGHTEN
LOCK NUT.
Adjustment.