Switch to full style
Batteries, magnetos, distributors, wiring harnesses and more.
Topic locked

Mag Oil Seal Installation Tool

Sun Feb 03, 2013 3:52 pm

The following steps only work if you have wood working tools available...

1) Take a small piece of hardwood and plane it down to the correct thickness (23/32"), or as close as you can using a caliper to measure the board.
2) Then take a new seal and trace an outline of it on the board. Cut the outline out of the board on the inside of the line, so it's a bit smaller in diameter than the seal.
3)Cut out another circle, larger than the seal and stack it on the first circle you cut out. This will create a "lip" so that the seal isn't driven in too far. Drill a hole through both and bolt them together.
4) Now you have a driver that is the correct size as to equalize the contact points, and thickness so that the seal is set to the proper place.

I've made a few like this and they work great!

Re: Mag oil seal n stall question

Sun Feb 03, 2013 4:01 pm

When I get to Fla, I'll get the dimensions and a few pics for everyone. It's real easy to make if you have the right tools. I used the lathe on mine to get it nice and perfect, but not in a chuck. I just squeezed the boards up between the tailstock and motor after the rough cut with a scroll saw. The lathe dimples in the wood created the center points for the drill press to create the holes necessary to bolt them together.
Topic locked