On Apr 22, 10:03*pm, SeaMonkey
wrote:
The usual causes for excessive sparking at the brushes
and commutator when the brushes are new are;

- weakened brush springs which aren't holding the brushes
firmly enough against the commutator,

- or the brushes contact surfaces do not conform fully
to the curvature of the commutator.

--
SeaMonkey

Well the brushes and springs are new and the brushes come pre curved
for the commutator so I don't think that is the problem. I'm going out
of town for two weeks but when I get back I'm going to take another
look at which brush it is that is excessively burning and I'll add it
to the thread. Thanks everyone for all the suggestions. Lenny