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Allis 7040 powershift availability?

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Mattman View Drop Down
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    Posted: Yesterday at 7:37am
Good morning Orangemen. I am doing some research in hopes to find a powershift clutch pack for my 7040 that I could swap into my pulling tractor in case of failure. My tractor is a 1976. Any assistance is appreciated. 
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 7:55am
There are 6 clutch packs in a Power Shift transmission and a torque limiter clutch on the flywheel. Which one do you want ????
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Mattman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mattman Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 8:20am
I am looking for the 6 pack assembly, not the limiter. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 8:27am
The whole PST transmission???   If the tranny you have is healthy and has the regulator pressure adjusted up a bit, 300 HP isn't an issue. Have you pulled this tractor yet ?? the torque limiter is the first thing that will slip, not the tranny. What gear(s) do you intend on pulling in ??
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 8:30am
There's been a couple of good County Fair pulls posted on here that has a strong 8000 series FWA with PST and I'd guess you haven't seen the power he produces going down the track and winning the class. Probably 18,000 lbs or heavier.   Posted in the tractor pull section by : Never Green   "Son takes first at the fair again".    Mr. Never Green has several pull videos of "farm" tractors that do quite well.

Edited by DrAllis - Yesterday at 8:52am
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Mattman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mattman Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 9:58am
Torque limiter has bolts to prevent slipping. I've pulled it 5 or 6 times successfully. I have not turned up the PS pressure yet. I did test all PS pressures and they were all around 200 psi. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 10:08am
Watch NeverGreens videos and quit worrying.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mattman Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 10:15am
I don't know if you have Facebook but here is a link of me pulling. Wasn't the greatest pull. I lost boost at 200 feet because I slowed down when I broke 6 mph limit. I was pulling at 10,500. I also need to shift more weight to the rear. 



Edited by Mattman - Yesterday at 10:17am
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 10:34am
Me no do Face book.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8070nc Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 12:24pm
Not trying to be smart or anything but if it was me id try to find a complete transmission. That not that terrible a job. Ive done it 3 times. In my mind to change internals could get more dicey. Maybe you are a old hand at it and know more about it than i do
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Mattman View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mattman Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 1:13pm
I agree. Healthy powershifts seem hard to come by though. I would consider myself a very capable mechanic/machinist that has never touched a powershift so anything could happen. I would like a replacement because I both work and farm and I know that it would take some serious time to go through one on the fly and get back to pulling. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mattman Quote  Post ReplyReply Direct Link To This Post Posted: 23 hours 22 minutes ago at 2:29pm
Try this link.


https://youtube.com/shorts/kngSEqHglwE?
feature=shared
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 22 hours 32 minutes ago at 3:19pm
Should have been down one gear. A right hand throttle and a right hand power shift lever isn't the best scenario to have. Can you run 3,000 RPM??  If there isn't a rule against it, make it so. I assume you were in 5th gear ??
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mattman Quote  Post ReplyReply Direct Link To This Post Posted: 21 hours 19 minutes ago at 4:32pm
I was in 6th, should have been in 5th.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 17 hours 46 minutes ago at 8:05pm
Ground speeds on a 7040 PST and 18.4 x 38 rubber is 5.4 MPH in 5th and 6.8 MPH in 6th at 2300 RPM.   20.8 tires are faster yet.  6th was clearly too much gear in a 6.5 MPH class and your engine wasn't spooling up whatever turbo is on it because of low RPM.   5th gear at 3,000 RPM is 7.0 MPH with 18.4 rubber. A gear that you actually will stay spooled up and still manage to turn the tires faster.

Edited by DrAllis - 17 hours 45 minutes ago at 8:06pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AC7060IL Quote  Post ReplyReply Direct Link To This Post Posted: 6 hours 8 minutes ago at 7:43am
Originally posted by DrAllis DrAllis wrote:

There's been a couple of good County Fair pulls posted on here that has a strong 8000 series FWA with PST and I'd guess you haven't seen the power he produces going down the track and winning the class. Probably 18,000 lbs or heavier.   Posted in the tractor pull section by : Never Green   "Son takes first at the fair again".    Mr. Never Green has several pull videos of "farm" tractors that do quite well.

Here’s the link that contains the YouTube video. https://allischalmers.com/forum/son-takes-first-at-fair-again_topic207611.html

And I found this pull too. I think it’s the same tractor only different track & looks like driver downshifted near end of pull?Nevergreen if you read this post & watch video, please verify.

https://m.youtube.com/watch?v=Nq_NX0g3eLk&pp=ygUJODA1MCBwdWxs

Edited by AC7060IL - 5 hours 59 minutes ago at 7:52am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NEVER green Quote  Post ReplyReply Direct Link To This Post Posted: 5 hours 29 minutes ago at 8:22am
Originally posted by AC7060IL AC7060IL wrote:

Originally posted by DrAllis DrAllis wrote:

There's been a couple of good County Fair pulls posted on here that has a strong 8000 series FWA with PST and I'd guess you haven't seen the power he produces going down the track and winning the class. Probably 18,000 lbs or heavier.   Posted in the tractor pull section by : Never Green   "Son takes first at the fair again".    Mr. Never Green has several pull videos of "farm" tractors that do quite well.

Here’s the link that contains the YouTube video. https://allischalmers.com/forum/son-takes-first-at-fair-again_topic207611.html

And I found this pull too. I think it’s the same tractor only different track & looks like driver downshifted near end of pull?Nevergreen if you read this post & watch video, please verify.

https://m.youtube.com/watch?v=Nq_NX0g3eLk&pp=ygUJODA1MCBwdWxs

  That is the same  tractor with my kid driving, but it is a PD tractor.  Have another 8050 with the power shift my brother drives, used to do very well until he started messing with weights so now my kid whoops up on him.


Edited by NEVER green - 5 hours 1 minutes ago at 8:50am
2-8050 1-7080 6080 D-19 modelE & A 7040   R50       
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NEVER green Quote  Post ReplyReply Direct Link To This Post Posted: 5 hours 2 minutes ago at 8:49am
https://youtu.be/8Y1zwoZBaMU

   Here is the PS tractor.
2-8050 1-7080 6080 D-19 modelE & A 7040   R50       
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AC7060IL Quote  Post ReplyReply Direct Link To This Post Posted: 4 hours 47 minutes ago at 9:04am
Originally posted by NEVER green NEVER green wrote:

https://youtu.be/8Y1zwoZBaMU

   Here is the PS tractor.
Thanks. Great pull too. Your son downshifted PS lots on it too. Nice smooth shifts. Allis’ PowerShift transmissions were built tough. Did you do any mods to its PS ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NEVER green Quote  Post ReplyReply Direct Link To This Post Posted: 4 hours 37 minutes ago at 9:14am
Originally posted by AC7060IL AC7060IL wrote:

Originally posted by NEVER green NEVER green wrote:

https://youtu.be/8Y1zwoZBaMU

   Here is the PS tractor.
Thanks. Great pull too. Your son downshifted PS lots on it too. Nice smooth shifts. Allis’ PowerShift transmissions were built tough. Did you do any mods to its PS ?

  Just turned up the pressure, it has over 11,000 hrs on it and it has never been pulled apart.
   Turned the standby pressure all the way down on the piston pump just so the brakes  work, swear it stars easier that way.
   Not sure of the HP, 200cc of fuel and a ported ex manifold with a 3lm , we figure we better not push the hp any higher with the tractor being so heavy, sicky clay track.
2-8050 1-7080 6080 D-19 modelE & A 7040   R50       
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mattman Quote  Post ReplyReply Direct Link To This Post Posted: 3 hours 15 minutes ago at 10:36am
How much psi are you running to PS plates?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NEVER green Quote  Post ReplyReply Direct Link To This Post Posted: 2 hours 34 minutes ago at 11:17am
  230 psi
2-8050 1-7080 6080 D-19 modelE & A 7040   R50       
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