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Mattman 
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Joined: 20 Dec 2012
Location: Plover, WI
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 Topic: New 7040 has clutch issues.
Posted: 01 Sep 2024 at 9:28pm |
 Added another 7040 to the Allis collection this week. I picked it up from an auction in Iowa. I did a lot of work already. I fixed a cracked dash. I replaced range cable. I brazed hole in radiator. Its in nice shape but clutch has little to no resistance. I can push it to the floor with 2 fingers. It doesn't seem to be slipping. Trans brake works well. Its just too soft. Linkage all looks ok too. Not sure if I have a hydraulic problem or a worn out clutch. Any ideas?
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DougG
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Joined: 20 Sep 2009
Location: Mo
Points: 8108
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Posted: 01 Sep 2024 at 10:40pm |
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Run it- does it slip then ? Open it up,, you will find the problem
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JPG AUSTRALIA
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Joined: 13 Sep 2009
Points: 756
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Posted: 02 Sep 2024 at 6:07am |
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Broken return spring on pedal
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DrAllis
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Joined: 12 Sep 2009
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Posted: 02 Sep 2024 at 7:06am |
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You didn't say, but it is a Power Shift transmission and the clutch pedal return spring is broken inside the instrument panel area.
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Lynn Marshall
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Joined: 13 Sep 2009
Location: Dana, Iowa
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Posted: 02 Sep 2024 at 7:40am |
 I don't see a gear shift lever or a transmission filter in the picture, so I'm going to assume that it's a power shift also. Usually, if the spring breaks, the pedal won't return upwards. I wonder if someone with a weak leg has replaced the original spring with a lot lighter one.
Edited by Lynn Marshall - 02 Sep 2024 at 7:55am
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Mattman
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Location: Plover, WI
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Posted: 02 Sep 2024 at 7:54am |
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The pedal returns as it should and the spring is not broke. This is a power shift transmission.
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DrAllis
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Posted: 02 Sep 2024 at 8:09am |
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So, if the inching pedal returns 100% fully, there is no problem. Power Shift transmission inching pedals push easy compared to a Power Director. I'll bet it had a broken spring at one time and what was used to replace it is probably a little weaker than OEM. Again, if the pedal comes 100% fully UP, there is not a problem. Carry on.
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DougG
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Posted: 02 Sep 2024 at 8:21am |
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I like that chick on the right of that pic Lynn,,
Edited by DougG - 02 Sep 2024 at 8:21am
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Lynn Marshall
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Location: Dana, Iowa
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Posted: 02 Sep 2024 at 8:26am |
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The power shift tractors don't use a clutch cable like the power director tractors. The cables can get stiff and stretch over time on those models. It is just a rod and mechanical linkage to move a spool in and out of a valve body, on a power shift. Neither model uses a dry clutch with a pressure plate, release fingers, or throw out bearing.
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Mattman
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Joined: 20 Dec 2012
Location: Plover, WI
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Posted: 09 Sep 2024 at 7:20pm |
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So I figured out my light clutch issue. Previous owner had a power Director spring instead of heavier spring and link installed. I have all the correct stuff on it now and the clutch feels good. I found the pin on the floor for the power shift linkage. I am assuming it was a mixup at the service counter years ago. Thanks again.
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