WIRING THE MAGNETO
The wiring of the magneto is clearly shown by [wiring diagram].
First determine the sequence of firing for the cylinders and then connect the cables to the spark plug in the cylinders in proper sequence, beginning with cylinder No. 1 marked on the distributor block.
The switch used with the independent type must be mounted in such a manner that there will be a metallic connection between the frame of the magneto and the metal portion of the switch.
It is advisable to use a separate battery, either storage or dry cells, as a source of current for the dual equipment. Connecting to the same battery that is used with the generator and other electrical equipment may cause trouble, as a “ground” in this battery causes the coil to overheat.
CARE AND MAINTENANCE
Lubrication:
Use only the very best of oil for the oil cups.
Put five drops of oil in the oil cup at the driving end of the magneto for every fifty hours of actual running.
Put five drops of oil in the oil cup at the interrupter end of the magneto, located at one side of the cam housing, for every hundred hours of actual running.
Lubricate the embossed cams in the cam housing with a thin film of vaseline every fifty hours of actual running. Wipe off all superfluous vaseline. Never use oil in the interrupter. Do not lubricate any other part of the interrupter.
Adjusting the Interrupter:
With the fibre lever in the center of one of the embossed cams, as at [Fig. 65], the opening between the platinum contacts should be not less than .016′′ and not more than .020′′. The gauge riveted to the adjusting wrench should barely be able to pass between the contacts when fully open. The platinum contacts must be smoothed off with a very fine file. When in closed position, the platinum contacts should make contact with each other over their entire surfaces.
Fig. 65.—The Berling Magneto Breaker Box Showing Contact Points Separated and Interruptor Lever on Cam.
When inspecting the interrupter, make sure that the ground brush in the back of the interrupter base is making good contact with the surface on which it rubs.
Cleaning the Distributor:
The distributor block cover should be removed for inspection every twenty-five hours of actual running and the carbon deposit from the distributor finger-brush wiped off the distributor block by rubbing with a rag or piece of waste dipped in gasoline or kerosene. The high-tension terminal brush on the side of the magneto should also be carefully inspected for proper tension.