HD 11B
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=88329
Printed Date: 30 Jun 2025 at 1:28pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: HD 11B
Posted By: Steve allis dozer
Subject: HD 11B
Date Posted: 20 Apr 2014 at 5:25am
| I have been pulling down the 11B for torque a convertor rebuild, four big days so far with lots of pipes and bits and pieces to remove now I have found out that the input shaft in the trans is shot so that will have to come out after hopefully finishing a job then bring it home and start pulling it all apart again to fix that. |
Replies:
Posted By: Steve allis dozer
Date Posted: 20 Apr 2014 at 5:42am
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Posted By: Steve allis dozer
Date Posted: 20 Apr 2014 at 5:45am
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Posted By: Gargoyle
Date Posted: 20 Apr 2014 at 9:15pm
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I spent the last 3 days installing a new pinion on an 11E. Steering clutch is back in, sprocket is on and fuel tank is almost connected as of a late dinner time today.. Next up is driving the pin back in the track.. I'm beat.. |
Posted By: Lazyts
Date Posted: 27 Apr 2014 at 2:16pm
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What happened to the torque converter Steve? I bought one years ago that had a "stuffed" torque converter. Some of the little 5/16 bolts on the outside ring broke, and one of bolt heads went down between the main gear and the steering pump drive- split the case wide open like a watermelon. What you are doing looks like a preview of coming attractions for me as well. Our 11B we have now has a transmission problem- the clutches slip when it is cold. Once the trans is hot, it will "hook up" and push really good. I'm thinking worn sealing rings?
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Posted By: Steve allis dozer
Date Posted: 28 Apr 2014 at 9:21am
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G'day Lazyts the splines on the shaft on the convertor and the coupling were badly worn and it looks like the drive shaft has come out at some stage and smacked the hydraulic pump a few times before I bought it , I was worried it might happen again and when I had it apart I found that the top shaft in the trans has a lot of wear on the spline I took the plate off for the ground speed governor and I could feel the gear moving on the spline, I have put it back together and am hoping I can finish a windrow job I have then I will pull the whole thing down and go through it front to back mine wont push until it warms up trans either I just wait till its up to operating temp .I think that's just the way they are |
Posted By: Lazyts
Date Posted: 28 Apr 2014 at 10:26am
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It's fine in the summer, but in freezing weather it takes a long time to warm up, and when it is 20 below it just doesn't pull that good at all. I think a transmission rebuild would firm it up for sure. |
Posted By: Mactractor
Date Posted: 28 Apr 2014 at 5:08pm
| Do you think those Rockford converters are better than the Twin Disc on the original 11EP Trev? |
Posted By: Lazyts
Date Posted: 28 Apr 2014 at 9:32pm
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I don't know. I only ever ran one older EP with the twin disc, and it ran hot. I talked to other guys and they said "those early ones always ran hot". But then you talk to other guys and they tell you they never had a problem if they kept the rad clean. If you look at the EP parts book you begin to believe there may have been a problem, because AC tried a few different radiators and fans before switching to the Rockford converter and eliminating one of the coolers on the engine. Mind you, I suspect the early EP we had suffered from a warped clutch in the transmission, which would make it heat bad too. I took it in trade on an 11-B that I had- shouldn't have sold the B, shouldn't have taken the EP on trade. I guess two wrongs don't make a right. The old thing pushed good though. Later on I had a late EP with the Rockford torque. It had the Series B dash and flat hood- much like the B but without the updated hydraulics and quick drop valves. I think the Allis continued with the Twin Disc in the 16 and 21 tractors? I know a guy who has an old HD16DP with a heating problem as well. We kind of talked about adding a separate cooler for the torque converter or transmission to get the heat away from the engine. (kind of like the HD41) I know guys have done similar when re powering old Allis machines with Cummins. (Cummins doesn't like oil coolers on their engines)
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Posted By: Lazyts
Date Posted: 29 Apr 2014 at 10:09am
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Do you have one of each Mac? |
Posted By: Mactractor
Date Posted: 29 Apr 2014 at 2:12pm
| Yep, but have not got around to getting the series B ready for work yet, so have only ran the ol girl with the Twin Disc. The overheating is familiar, but I think a contributing factor is the taller gearing on the forward gears of the old 11EP and 6EP resulting in more converter slip. An air to oil cooler between converter and heat exchanger would help. Would like to try a Twin Disc one with the lower forward gears like all later trans had. Was told series B have bigger radiator than EP |
Posted By: Lazyts
Date Posted: 29 Apr 2014 at 3:18pm
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Mac The older EP I had was after the pinion direction change with the slower forward gears. There were three basic changes to the HD11 transmission over the years: 1) pinion turned around for slower forward, faster reverse 2) pinion changed from 11 tooth to 9 tooth 3) clutch plates changed from bronze to raybestos lining Yes, Series B has larger radiator and fan- 30x32 rad (I think..) and 30 inch fan What's the trouble with your Series B? |
Posted By: Mactractor
Date Posted: 01 May 2014 at 7:41pm
| The series B needs a sprocket shaft as previous owner ran outboard bearing to destruction. I will do final drive rebuild both sides as I like to know preload is right up on tapered roller bearings on all shafts. Was told trans housing is cracked and leaking, must have been dropped when out of tractor, so be a rebuild there also. |
Posted By: Lazyts
Date Posted: 01 May 2014 at 9:07pm
| It is probably a nightmare getting parts over there too, I would think. We bought a Series B and tore it down for parts a few years ago- it is almost time to find another one. It is handy to have a donor, but we paid too much- thought it had good undercarriage, but it turned out one rail was sealed, but the other was unsealed- the pins and bushings in the unsealed side were shot- had to get a new set of pins and bushings. |
Posted By: HD6 Merv
Date Posted: 07 May 2014 at 5:36am
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They all have problems; but I still think they are fixable, and are much less of a headache than a lot of the electrical garbage that has infested all the newer generation of machines. Those ones you have to be a A grade auto electrician 1 computer expert 2 and mechanic 3 At least our stuff its just mechanicing, and dirt oil and sweat  ------------- tits tyres and tracks they all cost you money |
Posted By: Lazyts
Date Posted: 07 May 2014 at 10:24am
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Yep, was working on a tractor the other day- lights came on, drained the battery/froze the battery, tractor was dead in the water, because the software glitched in the dash. There isn't a single switch in the cab that isn't connected to a computer- even the radio is connected to the CANBUS- if the radio screws up it could shut you down. Sometimes even getting in and out of the seat too many times on a chore tractor will raise hell with armrest controllers- static electricity spikes. A computer hacker could bring the whole industry to it's knees. Technology- gotta love it! |
Posted By: Lazyts
Date Posted: 07 May 2014 at 10:26am
I guess that is the beauty of Allis Chalmers- they didn't survive long enough to go to pot.. |