L4400 fel not working
- Thread starter bsamot69
- Start date
Lets cut to the chase and take the loader completely out of the picture.
- Disconnect the hose at port C on the outlet block.
- Disconnect the hose at port P on the loader valve.
- Reconnect the P hose to port C on the outlet block.
Dan
There is no way to tell what is hooked to what in that picture. But it looks like one hose is bigger thsn the he others so I would say no.
The two top ports should be jumpered together with just one hose as shown below. That bypasses the the loader valve altogether.
Also, when testing the 3ot there should be nothing on it.
Dan
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Those are the 2 I jumped, I'm a poor photographer . The 3 point has nothing on it
Attachments
Thats much better.
Before we go any further lets confirm the 3pt controls. How many control levers are there on your tractor?
Dan
That pretty much rules out operator error.
The testing results so far:
- You measured 2000 plus PSI pressure at the pump port on the outlet block.
- Using a bucket and stop watch you measured 8 GPM hydraulic flow at the outlet block
- You jumpered the outlet block eliminating the loader and the 3pt still does not work
- When you had the loader connected and switched a couple hose connections you got it to raise but some controll functions were not working correctly.
If not I think we should focus on correcting the loader plumbing and leave the 3pt for later. Once the loader is working we can work on the 3pt.
Dan
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Russell King
Well-known member
Lifetime Member
Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
I think to help you it would be a good idea to identify BOTH ends of each hose with a color or number system.
For instance the looped hose (on the block) could be hose #1 (or blue). So a piece of tape with #1 written on it placed near the connection will clearly show where that hose is connected to. I recall seeing colored wire ties on some hose ends so you may want to continue using that method.
Then you can take a picture of the block and another picture of the valve after you attach the hoses and it would be clear how each hose is routed. Right now you only need to worry about three hoses between the tractor and the valve. The hoses to the front end loader cylinders can be marked if you want but they can probably be easily sorted out later.
Do you use the rear quick couplers that are connected (looped) together? If not, then I would recommend you eliminate that connection and simplify the hose routing.
Do we know the flow path from the PB port on the block through the 3pt is open? Maybe tee the PB and T from the loader valve together temporarily until we get the loader going? Just a suggestion, you're in charge here. 🫤
I like your thinking. We are not going to use PB until the loader is working. We are going straight to the filler where we can get eyes on it. I tried reversing tank and PB portS about mmmm.... 40 posts back
Dan
I'll be marking the hoses from block to valve. Colored ties seem easiest. I'll photo both ends to verify plumbing.
An Unusual thing happened late today. I managed to get the tank hose switched with the P hose into the loader valve. When I started tractor and moved joystick to raise the bucket , the bucket raises. It also raised when moved to lower it. It did nothing when tried tilt bucket. I shut it off then saw my mistake. The bucket slowly dropped and hydraulic fluid was leaking from the relief ? Valve...
Switched hoses back to P into valve and tank line in its port . Now back to normal no function any position .
I'll send photos when I have all the hoses tagged.
An Unusual thing happened late today. I managed to get the tank hose switched with the P hose into the loader valve. When I started tractor and moved joystick to raise the bucket , the bucket raises. It also raised when moved to lower it. It did nothing when tried tilt bucket. I shut it off then saw my mistake. The bucket slowly dropped and hydraulic fluid was leaking from the relief ? Valve...
Switched hoses back to P into valve and tank line in its port . Now back to normal no function any position .
I'll send photos when I have all the hoses tagged.
You might start with.photos BEFORE tagging things. Tags are no good if they are wrong. Still wauting for pictures if the valve on the tractor. One from a distance showing all of the hoses and a couple closeups showing the labels on the ports.
You have just three hoses to start with. P, T, and Power Beyond at rhe hydrauluc outlet block. Get them properly connected to the valve and then we test the valve.
Dan
I have these 3 photos of valve from earlier. I'll get better distance photos and attach.
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Thats good enough.
The port on the side by itself is pump in. Connect it to top rigjt port on the outlet block.
The top port on the other side is tank return. Connect a hose to it but do not connect the other end.
The side port below tank return is power beyond. Connect a hose to it but do not connect the other end.
Put the two unconnected ends in a clean bucket and start the tractor. You should get oil from just one. Immediately turn the tractor off and mark the hose that had flow as power beyond. Confirm it is the one connected to the lower port on the right side.
Dan