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Antique Steel Wheel Tractors - Old Iron Lugs and Cleats

Rumely L 15-25 Main Bearings


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  #1  
Old 01-28-2019, 05:46:39 PM
CBarth66 CBarth66 is offline
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Default Rumely L 15-25 Main Bearings

I know there is not much of a chance, but would anyone have any useable main bearing shells for a Rumely L? I have checked with Biewers, Dave Shearns and a couple others with no luck. Will probably have my machine shop make them, but thought I would ask on here as a last resort. Even some that could be bored out true would work. Mine are wore oblong and are too far to machine true. Thanks, Chris.
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Old 01-28-2019, 06:13:44 PM
Oilpulled Oilpulled is offline
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Default Re: Rumely L 15-25 main bearings

These 15-25 Ls, or any machine for that matter can be a problem. I have an L which endured a crankcase explosion which split it open, but I got another block. The inside of that cracked case look nice and clean. I was offered it for $100, but felt sorry for the widow and gave her $150 before I discovered the crack but this was 26 years ago.
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Old 01-28-2019, 06:54:43 PM
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FWurth FWurth is offline
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Default Re: Rumely L 15-25 main bearings

Not sure how bad your's are, but why not have the old shells re babbited? There are sponsors on this site that can take care of the job.
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Old 01-28-2019, 08:11:41 PM
OldThresherM OldThresherM is offline
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Default Re: Rumely L 15-25 main bearings

The main bearings seem to be the achilles heel of the lightweights.It would've been great if Rumely had poured the babbitt on a removeable insert,sort of like Deere....and many others did.

I have heard of a few lightweights that had the original main bearing casting machined slightly.Then a bronze backed,insert style babbitt bearing was made.The shim pack would hold it still.This might be an option.
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Old 01-28-2019, 09:50:35 PM
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Default Re: Rumely L 15-25 main bearings

The bearing cages on those are removable, similar to a Deere. I don't recall if their only poured or if in fact they do have removable shells. Either way they can be re poured.
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Old 01-28-2019, 10:05:55 PM
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Thumbs down Re: Rumely L 15-25 main bearings

They don't have shells.....the housings are Babbitted and it's a PIA to do...….
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Old 01-28-2019, 10:11:18 PM
CBarth66 CBarth66 is offline
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Default Re: Rumely L 15-25 main bearings

It does have the removable shells. The flywheel side main seems to be good after adjusting with shims, but the pulley side has wore oblong with play side to side but not up and down. I took it to the machine shop to have them to slightly bore it out true, but it is just a little too far gone. I'm going to do both mains in any case. This tractor must have done lots of belt work. What about machining the bearing and installing a round bronze bushing? Not cut in half, but left hole. No, now that I think about it you must cut the bushing in half so you can adjust it with shims.

Last edited by CBarth66; 01-28-2019 at 10:49:59 PM. Reason: more info
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Old 01-28-2019, 10:48:36 PM
Bubbles Bubbles is offline
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Default Re: Rumely L 15-25 Main Bearings

There are two ways to pour them. Either in place on the tractor, this way you can make sure your gear clearance is good (back of pulley). The other option is to build a jig to hold the main bearing casting and a dummy shaft. This method requires a lot more fitting.

You also need to check/ adjust the end play once you get the bearings fitted properly to the crankshaft.

As previously stated they can be a pain in butt.
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Old 01-28-2019, 11:07:28 PM
CBarth66 CBarth66 is offline
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Default Re: Rumely L 15-25 Main Bearings

Yes, a pain in the butt and expensive. That's why I was trying to find some other bearing shells I could use. I figure I'd have about $700 in them if new ones were poured. Getting the jig set up takes most of the time. When I say shells, I mean the whole babbitt bearing insert piece. The upper and lower have part #'s stamped on them and are removable.

Last edited by CBarth66; 01-28-2019 at 11:25:39 PM. Reason: info
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Old 01-29-2019, 01:05:07 AM
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Default Re: Rumely L 15-25 Main Bearings

Chris, what is the shaft diameter and width of the bearing? Belt pulley and flywheel side are probably different width bearings. I might possibly be able to help.

Matt
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Old 01-29-2019, 07:38:06 AM
CBarth66 CBarth66 is offline
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Default Re: Rumely L 15-25 Main Bearings

Matt, the shaft and bearings are at the machine shop. Give me a couple days and I'll get the measurements. Thanks for your reply.
Chris
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Old 01-30-2019, 06:12:49 PM
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Default Re: Rumely L 15-25 Main Bearings

I got the measurements today. The crank is 2 7/8'' and the outside of the babbitt inserts are 3 3/8''(on the casting side). The pulley side top bearing has #k5p3258 on it, and the bottom is #k5p3260.
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Old 01-30-2019, 08:17:33 PM
sprint8f sprint8f is offline
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Default Re: Rumely L 15-25 Main Bearings

Chris, I sent you a private message.

Matt
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Old 01-30-2019, 09:41:05 PM
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Default Re: Rumely L 15-25 Main Bearings

Rumely supplied those die cast bearing shells as repair parts. There manual instructed you to scrape the outside to fit the housing, then scrape the inside to fit the shaft.-----you won't get much threshing done that day!!! Clyde
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Old 01-30-2019, 10:55:25 PM
CBarth66 CBarth66 is offline
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Default Re: Rumely L 15-25 Main Bearings

When I look at my main bearings, I thought all was well because they "look good" with no hot spots or scoring. You know, just put them in, shim them up right, good to go. The flywheel side,yes. But I had that pulley side apart and together several times trying to adjust it, but could not get the horizontal play out of it. That's when I found out it was just wore enough it was not able to be repaired. The old girl is proving to be a challenge, but i'm having fun!
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Old 01-31-2019, 12:11:05 AM
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Default Re: Rumely L 15-25 Main Bearings

^ End play is another thing altogether.
Someone who knows Babbitt could easily build up the face to remedy the end play.
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Old 01-31-2019, 01:06:46 AM
sprint8f sprint8f is offline
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Default Re: Rumely L 15-25 Main Bearings

Craig is on the right track if all you are needing to accomplish is repair the thrust/end play. Just building up the flange faces and hand fitting them will be much easier than making new shells.

Matt
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Old 01-31-2019, 07:09:14 AM
CBarth66 CBarth66 is offline
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Default Re: Rumely L 15-25 Main Bearings

No, it's not the end play. It's that the surface of the bearing is not round anymore. It's oblong, or egg shaped, due to lots of belt work. You don't have play up and down, but you do side to side. It's not excessive, but just enough to make it unrepairable.
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Old 02-04-2019, 10:16:00 PM
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Default Re: Rumely L 15-25 Main Bearings

A nice Gentleman was kind enough to offer to pour me a new bearing insert. He has a mold for the pulley side bearing for a model W ( I think) which is the same as the model L. Upon further inspection of the flywheel side bearing, it was decided to set up a jig and pour a new one for it also. My machine shop is going to do this. I will be telling more about the bearing work and the continuing work on this tractor on my restoration thread in the near future. Thank you all for your comments.
Chris
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Old 02-05-2019, 04:04:38 PM
Rod Gaffrey Rod Gaffrey is offline
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Default Re: Rumely L 15-25 Main Bearings

Quote:
Originally Posted by halcon View Post
Rumely supplied those die cast bearing shells as repair parts. There manual instructed you to scrape the outside to fit the housing, then scrape the inside to fit the shaft.-----you won't get much threshing done that day!!! Clyde
Halcon.
Did the above apply to any other Rumely tractors, if so which models?
Thanks.
Rod
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