8050 range trans stuck in low
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=195343
Printed Date: 08 May 2024 at 12:20pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 8050 range trans stuck in low
Posted By: Dry creek
Subject: 8050 range trans stuck in low
Date Posted: 23 May 2023 at 8:00pm
| Neighbor was pulling v-spreader with my 8050,said he pushed in clutch pedal and range transmission got stuck in low, handle is at Midway position between Hi-Lo,pulled cab floor ,all cables are attached,tight ,shifter stub will move side to side but not for or aft,any thoughts |
Replies:
Posted By: Unit3
Date Posted: 23 May 2023 at 10:35pm
|
Sounds to me like your cable in the console has come loose from its holder. We had the same thing happen in an 8070 power shift. The cable was held in with a zip tie. It just got old and brittle and broke. It was easy to fix. ------------- 2-8070FWA PS/8050PS/7080/7045PS/200/D15-II/2-WD45/WD/3-WC/UC/C |
Posted By: Dry creek
Date Posted: 24 May 2023 at 5:43am
| Cables ties are intact,short shifter under floor is tight,gonna put pipe on today to try move it |
Posted By: DrAllis
Date Posted: 24 May 2023 at 6:03am
| If the short shift lever under the cab floor can move side to side (the neutral position) AND the tractor will drive/move in what seems to be low range, I'm afraid there has been a seizure of the low range gear to the pinion shaft. This is how I'm interputing your description of what's going on. |
Posted By: Dry creek
Date Posted: 24 May 2023 at 7:11am
| Thank you for your reply dr allis that is what it's doing.i run 5 -8000s first time I've had this happen.will send out to local mechanic for repairs,any tips for them as they work on all colors,I do have factory service manual I send along |
Posted By: DrAllis
Date Posted: 24 May 2023 at 7:18am
| This is a big deal. That seized gear will have to be torched off of the pinion shaft and hard gears don't really cut well at all. It will require a different ring and pinion and any gears that get damaged from the torch work. |
Posted By: Leon B MO
Date Posted: 24 May 2023 at 7:39am
|
That does not sound pleasant. Let us know how the rebuild goes. Leon B ------------- Uncle always said "Fill the back of the shovel and the front will take care of itself". |
Posted By: Dry creek
Date Posted: 24 May 2023 at 7:56am
| Countryside repowered it with a Cummins 2yrs ago so it's worth fixing,I have a 7030 here with no engine if any those rear end parts could be used??it had hyd and gear jumper issues.just trying to see what options I have |
Posted By: DrAllis
Date Posted: 24 May 2023 at 8:08am
| 8050 ring and pinion and seized gear should be the same as 7045/7060/7080, but I'd want to do some part number checking to be sure. 7030 ring and pinion not the same I know. |
Posted By: Dry creek
Date Posted: 24 May 2023 at 8:17am
| Thank you again for info,will let everyone know what happens,by the way ,I put the426 from the 7030 in my 8010 feed mixer tractor that had spun bearing and cracked head couples yrs ago,it was a winter project I could do myself,still going strong 5 hrs a day every day |
Posted By: Dkienzle
Date Posted: 25 May 2023 at 8:29pm
| I'm no help with the repair, but since it has a Cummins repower in it, have it dynoed so see what it puts out. If it's over 200hp your going to continue to have problems. I've been down this road with a 7080. |
Posted By: DrAllis
Date Posted: 25 May 2023 at 8:41pm
| Seizure of a range transmission gear doesn't really relate to the engines HP. It is the seizure of a free spinning gear on the pinion shaft. The gear that seized isn't even being used. For some reason, there was a lack of lubrication problem somehow. The Cummins 8.3 transplant would probably be more likely to cause main transmission problems on the input shafts when equipped with a Power Director transmission. If you always ran 5th gear LOW button the main tranny could only fail if it twisted off the input shaft, which I suppose it could, given enough torque going thru it. |
Posted By: MACK
Date Posted: 25 May 2023 at 8:52pm
| Most likely cause for seizure is dirty oil or has set for years then taken down the road in HI range. MACK |
Posted By: Dry creek
Date Posted: 26 May 2023 at 4:58am
| For the record hp is set at 190,all my 8000s get regular oil/ filter changes,I use quality oils,not bargain brands,all 5 are used most of the yr on 400 ac dairy farm,I don't pull a chopper any more but this one does spreader/tanker duty,some tillage work and pto for agbagging,hmsc hammermilling,I welcome the comments as this is how we all learn something new and keep our orange heritage alive |
Posted By: Dry creek
Date Posted: 26 May 2023 at 5:18am
| I should also state that all 5 were bought used,3 from the Midwest 2 locally here in PA,so don't know how they mite have been abused or neglected B4 I owned them.the last new tractor was a 6080 dad bought in1982 to replace a 175D ,along with a d-17 IV and a d-15ll they did all the fieldwork till I started buying bigger tractors as our farm grew in size |
Posted By: DrAllis
Date Posted: 26 May 2023 at 5:59am
| Is the tractor with the possible seized gear a 2WD or FWA model ?? |
Posted By: Kevin in WA
Date Posted: 26 May 2023 at 11:20pm
| I'm pretty sure a FWA pinion is different than 2wd, if it is indeed seized. |
Posted By: Dry creek
Date Posted: 27 May 2023 at 7:48am
| 4wd |
Posted By: tbran
Date Posted: 27 May 2023 at 11:04am
|
I agree with the good Dr. - and it is a BIG JOB - might suggest Heitman tractor or google 'dismantled 8050 Allis' and get an entire rear end assy. I would say one is looking at 60-80 hours labor plus used parts anyway. Has to be FWA of course for all doner parts. ------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Posted By: Dry creek
Date Posted: 30 Jun 2023 at 5:37pm
|
Update: just pickedup 8050 from local repair shop, apparently short shifter under seat was wore enough to jump out of the shift gate,also the cylindrical pin that is in the shift rail slots was wore on both ends allowing too much slop. So they replaced cylindrical pin,did machine work on all worn surfaces,and reassembled. Tractor is back in service. Thanks to all who responded,I really value your knowledge of ac tractors. Total repair bill $1123 |
Posted By: Ed (Ont)
Date Posted: 30 Jun 2023 at 8:25pm
Wow that is a win win situation. Sounds like you have an excellent mechanic there. Thanks for updating us. Big help to all those who are still running this older equipment. 
|
Posted By: Dry creek
Date Posted: 30 Jun 2023 at 9:08pm
| I will give credit to Matthew and his crew at Stauffer Repair, they have been repairing tractors in a converted machine shed for 40+ years,they work on all colors not afraid to tackle any job, anything from log skidders,payloaders,riding mowers,rtvs etc. Usually 25-35 tractors waiting to be repaired. |