D2 Cat pony motor mag

[Walt Roys]

I'm at a friend's house and we are working on a D2. A couple of problems have come up and I need some answers from those that know. I could think of no better place the fellow stakers to find the answers.

The mag on the pony motor is not fireing. Do these mags have an impulse? Secondly, if you pull the mag off, are the timeing marks easily visable so it can be put back and be assured the timeing will be right on? Thirdly, can you get to the points and condensor without pulling the mag off? And lastly what do you have to take off if you have to take the mag off?
I surely will appreciate any help you guys can give, Thanks!
Walt

[Craig A]

If that has a Fairbanks RV2 you will, most likely, have to punt for a condensor.
Forget about original NOS condensors........they're good to look at but likely no good.
Between SHINEY points and the condensor I think you'll find the trouble.
It seems the coils are pretty tough in those mags.

[Preston Wells]

Walt I have a couple of Cat pony mags if you run into something more than points/condenser.

[Walt Roys]

I suspect the points and condensor and want to replace them. Now for you D2 guys how can I get to them. It would be simple if the mag were laying on the bench, but it is in the tractor. Now to the other questions, can the points and condensor be replaced on the tractor ? If not, are the timeing marks on the gears where they can be seen easily? Secondly, it apears to be just 2 bolts holding the mag on , can it be removed without takeing the diesel intake air tube off the machine?
Walt

[Walt Roys]

Hey you D2 guys I need your help here. Can points and condensor be replaced on the pony motor with the mag on the engine? Does this mag have an impulse? I sure would appreciate your input.
Walt

[Craig A]

Walt......DOES the pony have the Fairbanks RV or RV2 magneto?
If not what does it have?

[Walt Roys]

Craig, thanks for the responce, I'm going back down there today and will try to get the type of mag.
Walt

[naylorbros]

D2 magnetos do not have an impulse. How hard it will be to change the points and condensor will depends on which model D2 you have, U or J series, and which magneto it has on it, the Eisemann, Bosch or the Wico. I would not want to work on any mag that was still attached to the pony. The timing marks are found by removing the 1/2" pipe plug that is on the back side of the magneto mounting. Nothing is fun about working on the mags on either the D2 or the D4.
THanks
Ken

[Walt Roys]

Hey, Ken, thanks for the info, I just knew some one on this site would have answers on these mag issues. I'm going to look again tomorrow about the possibility of pulling that mag off.It must need points and condensor. Thanks again for the help.
Walt

[Dempster]

The mags were special made for Caterpillar by American Bosch, Wico, Fairbanks Morse or Eisemann. Like said the series of you D2 and mag brand needs to be known to get parts too. I can help you with parts or if not refer you to someone in your area that will have parts. Your D2 does NOT have a Fairbanks Morse RV mag on it ! If you can't get what you need on here visit forum at this one or get a D2 manual. It's not that complicated to time nor fix the mag but Caterpillar had lots of mags special made for there applications and most of those don't use same points and condenser as other mags so for some of them you can't just go get points and condenser at the local auto parts store but for a couple of them you might.

http://www.acmoc.org/