It serves as an example. It is a 160 amp alternator.
Two shortcomings with the Ford 70-100 amp alternator series
- Very short brushes. Part of the brush holder
- Original has a 6203 front (DE) bearing -- inferior for heavy service
- OEM has gone to larger 6303 bearing on newer alts
- I do not know if unit shown has an upgraded drive end frame to use the 6303 bearing.
The two screws near the regulator plug _May Be_ for the brushes. The field connection. Insulated brushes can be connected to an A or to a B circuit voltage regulator.
The 5/16" bat bolt on the right looks like it is insulated, making it the + bolt. The one one the left looks like a chassis negative bolt being it's not insulated from the case.
When I was building these things, I had Saint Mary's Carbon build graphite copper brushes that were 5/32" longer than the originals. The absolute longest possible. The brush retaining pin slid across fully depressed brushes during assembly.
