TM 5-4240-501-14PIGNITIONMagna-MaticRemove Breaker BoxRemove the two mounting screws, then remove thebreaker box, turning it slightly to clear the arm at innerend of breaker shaft. See Fig. 54. Breaker points neednot be removed to remove breaker box.Fig. 54 - Removing Breaker Box AssemblyRemove Breaker ShaftThe breaker shaft can be removed (after breaker pointsare removed) by turning the shaft one half turn to clearthe retaining spur at the inside of the breaker box.Install Breaker ShaftInsert the breaker shaft with arm upward so arm willclear the retainer boss. Push the shaft all the way in,then turn arm downward.Install Breaker BoxPull the primary wire through the hole at lower left cornerof breaker box. See that the primary wire rests in thegroove at top end of box: then tighten the two mountingscrews to hold box in place.Install Breaker PointsPress in the new oil seal with the metal side out. Putnew breaker plate on top of insulating plate, taking carethat the detent in breaker plate engages hole ininsulating plate. Fasten breaker plate screw only enoughto put a light tension on the plate. See Fig. 55. Adjusteccentric so that left edge of insulating plate is parallel toedge of box and tighten screw. Fig. 56. This locates thebreaker plate so that proper gap adjustments may bemade. Turn breaker shaft clockwise as far as possibleand hold in this position. Place new breaker point onshaft, then the lockwasher and tighten nut down onlockwasher. Replace spring screw and terminal screw.Fig. 55 - Breaker Box AssemblyFig. 56 - Insulating Plate Position215
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