Aaargh! 3-pt hitch not lifting any weight.

   / Aaargh! 3-pt hitch not lifting any weight. #41  
Yes let us know if you find anything. I sure would like to know if it's what I'm thinking it is. Glad I could help and that you got a manual.


Lee
 
   / Aaargh! 3-pt hitch not lifting any weight.
  • Thread Starter
#42  
I pulled the housing off today.
I will post some pictures later tonight or tomorrow. Nothing sticks out as a problem so far.
I removed the control valve from the housing, the o-rings look to be in good shape. I cleaned it out in Naptha.
Before I pull it apart completely, I was wondering if I could re-assemble the valve in the housing and test for a leak between
 
   / Aaargh! 3-pt hitch not lifting any weight.
  • Thread Starter
#43  
Some Pictures

IMG-20110904-00034.jpg


IMG-20110904-00033.jpg

IMG-20110904-00032.jpg

IMG-20110904-00030.jpg

IMG-20110904-00029.jpg

IMG-20110904-00026.jpg

IMG-20110904-00025.jpg

IMG-20110904-00024.jpg

Any ideas on getting the main spool out? Is it just threaded?

IMG-20110904-00023.jpg
 
   / Aaargh! 3-pt hitch not lifting any weight. #44  
project_X,

Frist off I have never had one apart and I'm uneasy telling someone how to do something unless I have done it. I have all my life took things apart and put back together for a living or just to see how it made. Look at it this way, it doesn't work now so to me it's a win, win if it works when you get it back on.
By looking at the 790 parts list I would remove plugs #10 I see one is in deeper then the other. I can't see why or how it would screw in because it has to move. If you take bolt 29 out I would not turn on nut 30 it adjust the push pin #26.
You have sure sparked my interest in this project.
 
   / Aaargh! 3-pt hitch not lifting any weight.
  • Thread Starter
#45  
project_X,

Frist off I have never had one apart and I'm uneasy telling someone how to do something unless I have done it. I have all my life took things apart and put back together for a living or just to see how it made. Look at it this way, it doesn't work now so to me it's a win, win if it works when you get it back on.
By looking at the 790 parts list I would remove plugs #10 I see one is in deeper then the other. I can't see why or how it would screw in because it has to move. If you take bolt 29 out I would not turn on nut 30 it adjust the push pin #26.
You have sure sparked my interest in this project.

Both the #10 plugs are the same depth, in the picture 1 has been removed, the other didn't want to come out (I need to drag my drill press vise out to my shed to hold it).
I don't plan on removing 29, as you can see it looks to be "factory sealed" with the corner bent against the bolt.

Hopefully pulling #7 shows me something
 
   / Aaargh! 3-pt hitch not lifting any weight. #46  
I think when you remove 29 all of 31 comes off. If you don't find anything at 7 I would go on with the others, they look easy to do and have no adjustments. Also only need some o rings. I'm been thinking it's a broken spring or a open poppet valve.
 
   / Aaargh! 3-pt hitch not lifting any weight.
  • Thread Starter
#47  
I think when you remove 29 all of 31 comes off. If you don't find anything at 7 I would go on with the others, they look easy to do and have no adjustments. Also only need some o rings. I'm been thinking it's a broken spring or a open poppet valve.

29 must be removed to get 7 out. if you push on 7 the assembly 31 moves out and is pulled back by the spring.

i removed both 3 and 22, o-rings and springs looked good.

i'll take 7 out tomorrow.
 
   / Aaargh! 3-pt hitch not lifting any weight. #48  
"29 must be removed to get 7 out" I kind of thought that and you haven't found anything. wow only 1 more thing to go and cleaning. Sure wish you could find something. If it was dirt we might not ever know for sure if it was dirt or a flat o ring. Are you going to put new o rings in?
 
   / Aaargh! 3-pt hitch not lifting any weight.
  • Thread Starter
#49  
"29 must be removed to get 7 out" I kind of thought that and you haven't found anything. wow only 1 more thing to go and cleaning. Sure wish you could find something. If it was dirt we might not ever know for sure if it was dirt or a flat o ring. Are you going to put new o rings in?

i have to measure each one and see if i can find metric ones next week....
 
   / Aaargh! 3-pt hitch not lifting any weight.
  • Thread Starter
#50  
Sizes are in the parts diagram. I'll have them tomorrow.
 

Tractor & Equipment Auctions

Target Ecoline Walk-Behind Concrete Saw (A49461)
Target Ecoline...
(10) 7 x 9 Treated Posts (A50515)
(10) 7 x 9 Treated...
2002 INTERNATIONAL 4700 4X2 SEWAGE TANK TRUCK (A51243)
2002 INTERNATIONAL...
2019 CATERPILLAR 440 BACKHOE (A51242)
2019 CATERPILLAR...
Skid Steer Plate Attachment (A50322)
Skid Steer Plate...
2018 CATERPILLAR 305E2CR EXCAVATOR (A51242)
2018 CATERPILLAR...
 
Top