1920 Allis Chalmers 6-12

All the ones I took apart here were orientated with the lip towards the bolt head.  Not saying that someone hasn't been into things and changed around since leaving factory.  That's just how I found them.

And just for the record, they definitely ARE formed this way and not just deformed from getting sucked into the bolt hole, as has been suggested to me from other people.  They are all made this way, even the little ones.

They are definitely stronger than "modern" style ones, and dig into the heads of the bolts good.  I had to file the burs off the heads of the bolts that the lock washers left behind.

I haven't been able to find a single picture or reference to this style of lock washer on the internet anywhere.  I am assuming it was a short lived idea?  Kinda like the DOT style screw on grease fittings, which were only used for a handful of years in the late '20's.  

Has anyone else ran into this style of lock washer?

Thanks!

[TUBE]IDOlofuI6l8[/TUBE]

From what I hear and read, babbitting is like anything, takes some time to learn the tricks, and takes some practice (and usually a few failures) to get the hang of it.  But I don't think it is that hard.  A bit time consuming.  Some day I'll learn.

Jacob. The babbit bearings in those trumpet housings appear to be in separate sleeves and were probably lined with babbit as separate units.  They would then have been installed in the housings, assembled to the main casting, and then line bored to final size in place.

I had a 1935 MG with an OHC six cylinder engine that was built that way.  The front and rear bearings were babbitted sleeves and the two center mains were babbitted also.  All the bearing housings were assembled into the block and then all were line bored to final size.  I did all the babbitting back then.

[TUBE]6q2WrhPwRdo[/TUBE]

 Thanks for the update.

 I now know a little more about your tractor! Good details and explanation!

Regards,

 Chris

[TUBE]Ap2zS2kFjss[/TUBE]

[TUBE]5-CakM2errU[/TUBE]

Also have talked to David Dickmyer who has the second Industrial 6-12.  He's in the process of restoring his too.

Chatted with Dave Harrington the other night, to see if he had any advice on disassembling what is still together of my 6-12.  Dave is one of the most knowledgeable guys around when it comes to the inner workings of these machines.   Him having to strip down not one, but two 6-12's and completely rework both transmissions to get the gearing to work together on his Duplex replica, is truly amazing!

So after having a nice chat with Dave, we came to the consensus which I kinda already figured.  We will have to remove at least one segment gear from each drive wheel first.  Then the tractor can be supported while both drive wheels will be taken off.  Probably take the rear sulky off at this point too.  Then the entire tractor can be lowered mostly to the ground.  Then the entire differential/transmission assembly can be removed from the main tractor casting, which is my goal, so I can bring that back to ND with me to rebuild over the winter.

Sounds simple right?

Of course I have been keeping in contact with Norm Meinert too.  As I have previously mentioned he is in the process of using the steering box from his Industrial 6-12 as a pattern to make me a new one.  I got a pic from him the other day showing that he has the box all apart and cleaned up.  It is kinda neat to see what the inside of that looks like.

Here is a link to that pic, in my Google Photos album:

Norm is waiting to hear back from the foundry.

I guess the spur gear in his is rather worn, so he'll have to address that before building mine.  But it's a win-win as he'll have a like new box when he's done, and so will I!  It sounds like David Dickmyer may need some parts for his steering box as well, as he has lots of slop from what he tells me.  And Dave Harrington mentioned he has another friend who needs steering box parts too.  

So this project will end up helping a bunch of us 6-12 guys.  I can't thank you all enough for the help you have provided thus far!  

And while we'er at it, if there are any other 6-12 owners out there who may need steering box parts, now is the time to jump on board.  If we're making a few parts, it's just as easy (and possibly a bit cheaper for everyone) to make a few more.  Speak up fast though, this project is already in motion. 

 

And of course, if there are other 6-12 owners out there that want to chat, I'd love to listen.  I have a lot to learn about these machines yet.

I will continue to add pics to this album for the remainder of this restoration, to keep them all in the same easy to access for all location.