GMC Starter

[nate chase]

Gene,
The old Harley manuals for generator models (long since gone) say to use a
hack saw blade ground off to provide the needed tooth. Doubt if the mica is
the same thickness but it's just a thought...

Nate '75GB (Happy Valentines Day) Omaha

>>>

Date: Mon, 14 Feb 2000 13:45:28 EST
From: W4BJC
Subject: GMC: GMC Starter

I am rebuilding my starter,new bushings, new brushes ,cleaning the
commutator.
Should I undercut the mica on the commutator or just let it alone. at
present
it is flush with copper.How is the best way to cut it if it needs done?
Gene C

 

[blank]

Arch,

I'm glad you posted that! Been a long time since I cleaned up a
commutator(been buying rebuilt parts too much I guess), but used the old
hacksaw blade method too. I wasn't sure if this was the "politically
correct" method of doing this.

BTW, buying rebuilt starters and alternators is a sure sign that I've got
more money and less time than I had as a teenager. With a little time and a
good VOM these things can usually be repaired inexpensively.

Patrick

>
> In a message dated 02/14/2000 6:33:44 PM Central Standard Time,

>
> > Doubt if the mica is
> > the same thickness but it's just a thought...
>
> Nate
>
> You are making me do this. Mica is usually a little wider than hacksaw
> blade unless it has been turned down a few times. Bend the blade to
> make it break. This will leave a slight hook on the blade.
> Pull the blade
> toward you. Less chance of scratching communtator. Once you have
> mica below copper use ground down end to dress up the sides of the
> slots. If you scratch the copper use some 400 grit paper to
> polish them
> out. Clean well with a solvent of your choice ---- I wont say
> what I like.
> Did not know that people still knew how to dress down a comutator.
> Nice to see.
>
> Take Care
> Arch
>