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Case 580B shuttle pump...

Swampfoxo

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Joined
May 15, 2015
Messages
127
Location
Franklinton louisiana
Occupation
Engineer
My B recently got to where I was having to ridevery to know a few 580 b the shuttle pedal to keep trans pressure up and it didn't want to pull even in first gear. I pulled the shuttle pump/plate off and saw the suction line was totally plugged with trash. Pump shafts had some thrust but within acceptable range. Gears and shaft looked good also. Went ahead and re-sealed shuttle valve (spools were good), new TCH/filter and flushed torque converter case. There was a thick layer of old trash and grease in the case sump. To flush sump before installing the shuttle valve and plate, I filled the TC case with about 3-4 gallons of diesel and took a long wand on my air line and blew into the case through the diesel and let it bubble good for about 5 minutes and drained. Repeated this process 10 times until the case sump was clean. Also rebuilding some other things on it while its down so I haven't tested it yet
Super l im in louisiana also what town are you in as im in franklinton. Kinda wanting to get to know a few 580 b owners. I put 303 oil 7n my shuttle. Now i find itvt a kes hy teans. I dont have power got it last year never did , shuttle screen was plugged . Anyhow a ny idea on ho we ti clean out thec303 oil. I cant lug the motor or spin tires when i stop it in a pile of dirt. Clutches might already be toast.
 

Swampfoxo

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Joined
May 15, 2015
Messages
127
Location
Franklinton louisiana
Occupation
Engineer
[how did u reseal the spool valves. ive looked at the diagrams and I see seals on the ends but what about the spool up inside the valve is there orings or something that isn't in the diagram .
 

Swampfoxo

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Joined
May 15, 2015
Messages
127
Location
Franklinton louisiana
Occupation
Engineer
I didn't have to remove fuel tank or valve cover, I removed upper parts of shuttle spool valves unbolted the pump then eased out the cover plate. later coming back for the pump. just in case I hope this helps
 

Cessna49

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Joined
Jun 30, 2018
Messages
52
Location
Wasilla Alaska
Hello All,

I am getting ready to dig into my 73 580B with shuttle problems, mine is a little different then what I've been reading on here. Some of the same characteristics are wont move when cold, weak in any gear other than in 1st and sometimes just wont move!

My transmission pressure gauge is reading in the high red, if I push the clutch it will drop to low red but will never be in the green. Last week it stopped moving for me, the only way I could get it to move was to feather the clutch very slightly with my hand while playing with the throttle. I adjusted the linkage from the clutch pedal to the valve to where it would drive again but now I am out of adjustment from the 3.1 inches it is suppose to be. When I start it up, it goes into the high red, I put the outriggers down and let it warm up with the wheels spinning but even after half hour I have to feather the clutch to get it to move on its own. Once its warm it will go pretty decent but it takes forever to get there. I have changed the fluid and filters 3 times in the last 2 months and there is no sign of debris in the filter, there is moisture in the fluid though. Also, until I adjusted the clutch the metal lines running to the cooler would vibrate so bad I had to wear ear muffs around that thing as it was absolutely defining.

I bought this machine this summer with a bad engine, the old boy I got it from said it stopped going years ago ( around 2002 ) and he had a friend replace something in the transmission ( he didn't know what it was ) and got it partially back together. It sat uncovered with many of the lines off until I got it this summer 2018.

I have read a lot about the pick up tubes, but would it still go good when its warm if the tube was plugged?
Has anyone ever had the gauge reading high in the red?

Currently if I adjust the clutch pedal so there is 3.1 inches like the book calls for it will not move.

Thanks a million for any help on this.


WHERE DO I START?? WHAT DO I DO??
 
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Swampfoxo

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Joined
May 15, 2015
Messages
127
Location
Franklinton louisiana
Occupation
Engineer
Heres about all i know. Im like you ivd read and read on this. Lets talk speed a moment.if it doesng move whdn cold its normal until it warms up. Now the power shuttle is 8f it has bad springs thT wojld cause it to move slow . Mine has power in 1 and 2 buf very lil in 3 and almost none unless on level ground in 4th gears. The so called clutch i call a hydraulic dump valve. The bolt on it is a cam. I loosened mine and watched my meter on thd dash. When in neutral if reads low cause fluid is headed back to the sump. When in gear it goes through the shuttle. Pressurs should be in the green. Now. That spool valve that the clutch operates controls pressure. Check out colemanequipment.com. ull see diagrams of assembly and part numbers. The 3/4 size looking nut if u shim behind it pressure goes up . Its old machine so u dont know who did what to it. I gook someones advice anx puf 1 quarg of augomatic transmission fluid in my shuttle oil and it actually helped. The filter for the shuttle is in front of the tractor behind the grille. When ghd clutch is pressed i bdlieve everyghinv gets bypassed. Whdn u release ur using the filter. Did u change the correct one. Does youd grind the gears as u try and shift.im still learning. Does it leakwhere ur brake shoes are at. Remdmber to put grease in grease fitting on axle right behind the rear wheels. Do that right now. Trust me. Get reaDy to learn to fabricate.lol. i am. Mind willnot pull itself up a hill in 3rd hardly and will stop in forth. Ithink i need to change shuttle clutches. On level ground it has to build speed in 4th. I love talking about this but hate texting. My screen was stopped up i cleaned it when i got mine. There is a spot to drill and tap a 3/4 hole below ur shuttle pickup screen. Its in the forums. Directly under the fuel tank. Thats where your shuttle control is. The shuttle pump is below that. I have pulled all that out except the bottom plate. Then managed to unscrew the pump pipe from it then pull that plate out with pulling the fuel tank. If u gonna do that get new gaskets. Clean ur screen. Maybe look into your pump. See what it looks like . Pull the plug on bottom after draIning the oil. Either filter it or toss it. Plug it put diesel in it and boil diesel with air hose to churn up trash. Dump and repeat. .if u have to change out ur engine. Ehkld its apart consider changing clutches in ur shuttle. Dxxpensive but itll be right there. Just a tip.
 

Cessna49

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Joined
Jun 30, 2018
Messages
52
Location
Wasilla Alaska
Thankyou for the reply Swampfoxo,

I already swapped the engine so I missed the boat on that one... I am curious as to what It means if the transmission gauge is reading in the high red when in gear or in neutral? Its only in the green if I feather and play with the clutch pedal which is now out of adjustment just to get this thing to move. If I have it adjusted like the book calls for it wont move, or barley atleast. If I play with it and work it I can get it moving and when its warm it goes really well, would it build that much pressure if the screen was plugged? I am willing to do the 3/4 hole and check the screen but it just dosent seem to reason with me that it would finally work once warm, and why so far out of adjustment? When I say I have to work it I mean work it forward and backwards in first, lifting it up with the outriggers and so on several times for a good 20-30 min to be able to drive it.

Thanks for any help on this.
 

Swampfoxo

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May 15, 2015
Messages
127
Location
Franklinton louisiana
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Engineer
If it was id say maybe your clutch isnt adjusted correctly. The pressure is some kind ofblockage. . Does it move strong in first aftef its warm.
 

Swampfoxo

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Messages
127
Location
Franklinton louisiana
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Engineer
Here 8s what you can do evenyuallyScreenshot_20180901-013131_Photos.jpg
 

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Cessna49

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Jun 30, 2018
Messages
52
Location
Wasilla Alaska
Yes I do own a manual, yes it will move strong in first once warm and even in second once warm. Just takes FOREVER to get it to even move.

Thankyou for the reply's!
 
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Swampfoxo

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May 15, 2015
Messages
127
Location
Franklinton louisiana
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Engineer
I wanna change your thinking a little on the adjustment for your clutch that cam u rotate to get 3.1 inches. Assume you have wear on parts do u mighf need a little more than that to be in the correct position. Watch ur gauge and as u adjust it . Tweak it a lil more of less then try that to see if there is a change. Mine has lots of slack in its linkages etc. Im thinking thats part of my problems as well. I did this adjustment on mine and was able yo spin tire as i was trying to dig. Not sure if that tells me if my clutches are good or not. Mind gribdz ax i try to put her in gear im thinking that slack in that valve going the oposite way lets fluid by as its in neutral.maybe when u get one correct the other is outta lind due yo this dlack. Fix slack fix problem i hope
 

Cessna49

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Joined
Jun 30, 2018
Messages
52
Location
Wasilla Alaska
That does make sense... I adjusted mine with linkage it self, is there another way to adjust that? I guess I need to look at the book again but I did not see another way to adjust anything on the clutch pedal besides that linkage. I assume you get the same results regardless, you are just changing the position of that valve slightly.
 

Swampfoxo

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Joined
May 15, 2015
Messages
127
Location
Franklinton louisiana
Occupation
Engineer
That does make sense... I adjusted mine with linkage it self, is there another way to adjust that? I guess I need to look at the book again but I did not see another way to adjust anything on the clutch pedal besides that linkage. I assume you get the same results regardless, you are just changing the position of that valve slightly.
 

Swampfoxo

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May 15, 2015
Messages
127
Location
Franklinton louisiana
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Engineer
See the peice u adjusted
Follow it to the peice withthe cut out in it. Its got a rollef bearing in that. That piece has a bolt at thetop but its not a bolt its a cam when u loosen and turn it the adjustment is made there. . It has to be 3.1inches plus or minus for wear. Adjust cam as u wTch pressure gauge.
 
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