7000 transmission brake
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=187248
Printed Date: 25 Aug 2025 at 5:26pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 7000 transmission brake
Posted By: Tenn allis
Subject: 7000 transmission brake
Date Posted: 24 Mar 2022 at 7:52pm
| Got a black belly 7000 was wandering if there is an adjustment on the transmission brake it’s grinding a lot while trying to shift into gear Is there a measurement on the spring that pulls the the brake on. Tractor is new to me been sitting several years I have the fuel tank off now just cleaning it out so it would be easy to get to the assembly |
Replies:
Posted By: MACK
Date Posted: 24 Mar 2022 at 8:39pm
| Takes a bit for every thing to stop. A operators manual is your best bet. Black belly and maroon belly are a little different. MACK |
Posted By: DrAllis
Date Posted: 25 Mar 2022 at 8:09am
| I don't have the service book in front of me, so going from memory. If your tractor has the correct updated parts, the spring to apply the trans brake is 2 inches in diameter or more and 4 inches long or longer. Anyway, measure the springs compressed length as it is now. (This assumes it is adjusted correctly). When you step down FULLY on the clutch pedal, to where it hits its stop bolt and cannot go any farther, the spring should have been compressed almost another 1/4" tighter. (I think the actual number is .200".) This is measured at the front two adjustment nuts on the threaded rod. There is a sleeve that would move away from the double nuts. So, if you are not getting .200" to .250" movement of the sleeve, move the front two nuts forward enough to achieve that. THEN, YOU MUST MOVE THE REAR TWO NUTS FORWARD THE SAME AMOUNT to keep the spring compressed length the same. |
Posted By: Tenn allis
Date Posted: 25 Mar 2022 at 9:03am
| Thanks went out this morning and checked the tractor the spring was not applying any pressure to the plate with clutch fully depressed so adjusted it forward about 3/4 inch and now with clutch all the way down I’ve got 1/4 inch movement of rod out of sleeve we’ll try this when we get it running thanks again |
Posted By: DrAllis
Date Posted: 25 Mar 2022 at 9:07am
| Was it working fine and then suddenly quit working?? I've heard of (never seen one) the friction material coming off of the brake pad inside the tractor. That would cause a sudden change in how well the trans brake works. You wouldn't want to operate it without friction material because it would then be steel on steel, contaminating your whole hydraulic system. |
Posted By: Tenn allis
Date Posted: 25 Mar 2022 at 10:53am
| Just got the tractor home Sunday and got it started it has been sitting for years I drove it around to make sure it was mechanical sound before I invested any money in it everything works except the twist handle was stuck have got it working better and while working on that I noticed te transmission brake wasn’t working so I have no idea if the friction material could be off or not. Got it started again this morning gonna drive it around again. Got all new filters coming from b and g so when I change the hydraulic filter will inspect and see if I can see any material |
Posted By: Tenn allis
Date Posted: 25 Mar 2022 at 12:51pm
| Just for an update after adjustment the clutch brake is working as it should only can’t get the handle twisted enough to go into 1st and 2nd may need more pb blaster and working more back and forth thanks Dr for your help |
Posted By: DrAllis
Date Posted: 25 Mar 2022 at 1:13pm
| New "twist" cable will fix it. |
Posted By: tbran
Date Posted: 30 Mar 2022 at 11:14pm
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I have the adjustment bulletin at the shop. finally found it. email me at bgtbran@hotmail.com and I can send a pdf... ------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Posted By: Tbone95
Date Posted: 31 Mar 2022 at 9:58am
Does that cover a 7045 as well? Mine is in serious need of adjustment......
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tbran wrote:Posted By: DrAllis
Date Posted: 31 Mar 2022 at 11:30am
| NO. Black chassis 7000 only. |
Posted By: Tbone95
Date Posted: 31 Mar 2022 at 1:42pm
OK, so, am I looking at just tightening my cable?
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Posted By: DrAllis
Date Posted: 31 Mar 2022 at 2:21pm
| Power Director ?? Maybe. There must be zero freeplay in the clutch pedal with the engine off. Many times the fork bushings are worn out and the cable end ball socket too. |
Posted By: tbran
Date Posted: 31 Mar 2022 at 4:32pm
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kind of confusing, but if when asking about .... call a 7000 just that and all others 7000 SERIES... (7010-7080). I have made a few boo boo'$ by not being really clear on which model we were discussing. ------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Posted By: Tbone95
Date Posted: 01 Apr 2022 at 7:28am
Power director, yes. Probably need the bushings. The cable itself was new a few years ago, but I did not replace the bushings at that time.
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Posted By: Tbone95
Date Posted: 01 Apr 2022 at 7:29am
Yep. That's why I was asking if this was a difference or applicable to all. It can be a trick! Thanks.
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