G379, G398 & G399 ENGINES Caterpillar

7L6791 and 3N8861 Transformers for Fairbanks Morse Solid State Magneto

Resistance:

Primary coil measured between positive post (2) and negative post (3) of transformer ... .3 to .6 ohms

Secondary coil measured between negative post (3) of transformer and outlet (1) for the high current (tension) ... 11 000 to 13 000 ohms

2W3747 Transformer for Altronic Solid State Magneto

Resistance:

Primary coil measured between positive post (2) and negative post (3) of transformer ... .1 to .2 ohms

Secondary coil measured between negative post (3) of transformer and outlet (1) for the high current (tension) ... 5000 to 8000 ohms

4W5439 Transformer for Altronic Solid State Magneto (low emission)

Resistance:

Primary coil measured between positive post (2) and negative post (3) of transformer ... .3 to .5 ohms

Secondary coil measured between negative post (3) of transformer and outlet (1) for the high current (tension) ... 8200 to 18 000 ohms

9Y3986 Transformer for Altronic Solid State Magneto

Pin "A" is positive.

Pin "B" is negative.

Primary coil measured between positive post (A) and negative post (B) of transformer ... .2 to .4 ohms

Secondary coil measured between negative post (B) of transformer and outlet (1) for the high current (tension) ... 8000 to 9600 ohms