Voltmeter light Alternator

[Brice Warnick]

I checked the charging light in the cluster and it is working.
I check the ground connections and they are fine.
I also checked the blue wire from the alternator that runs up under the
bypass valve and it looks fine as well.
The Sears Diehard has 38 months on it.
It appears that the alternator is probably bad.
The alternator no. that I can barely read looks like 034 903 016H 110A.
That no. does not jive with what I am seeing at parts places. They are
showing 90A and 115A.  Probably the no. I want now is 034 903 017BX
which is a 115A.
Has anyone ever bought a brush kit to just replace the brushes? Is this
kit dealer only?