That is bad news. I would say very bad news. You should be getting just under 9 GPM.
The silver lining is you now have a clear problem to focus on.
Dan
L4400 fel not working
- Thread starter bsamot69
- Start date
The silver lining is you now have a clear problem to focus on.
Dan
Its low not restricted.
- Suction side leak
- Worn out pump.
dan
If there is a suction side leak, will the discharged fluid be foamy? What ways can I confirm worn pump?
I ran the tractor at full throttle for 20 seconds and got about 3 gallons. If I ran it at full throttle for 60 seconds I should get under 9 gallons?
Its simple arithmetic.
3 gallons in 20 seconds = 9 gallons in 60 seconds. So your test showed 9 GPM at full throttle?
Dan
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So the flow on my tractor of just under 3 gallons in 20 seconds indicates it meets the 9 gpm requirements?
If you measured 3 gallons in 20 seconds thats 9 gallons in 60 seconds = 9 GPM.
The Kubota specifation is 8.4 GPM sounds good.
Dan
Thats a good and timely question. Up until a few weeks ago I would have said no but somebody here had one that did.
Or at least replacing the pump fixed his flow problem.
In this case I think its time to reroute loader PB straight to tank and see how the loader responds
Thank you Dan !
Your suction side leak could be the right idea if air is being sucked in and takes ages to compress.
If there is a restriction on the pressure or return side, should that not be audible with the pump working really hard?
Your suction side leak could be the right idea if air is being sucked in and takes ages to compress.
If there is a restriction on the pressure or return side, should that not be audible with the pump working really hard?
In 40 years of user assistance much by phone/email I have been fooled too many times. Since I am not there to listen I can't judge what other people hear or dont hear.
A simple empirical test is more reliable...
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No, via phone or from a recording analysis is not possible. Same applies to automotive / engine problems. You have to be there yourself.
But bsamot69 may be able to hear if the pump is strained (blockage) or not (sucking in air).
Ok, I better stay out of this thread now, I am sure you will get to the bottom of it and solve the problem
But bsamot69 may be able to hear if the pump is strained (blockage) or not (sucking in air).
Ok, I better stay out of this thread now, I am sure you will get to the bottom of it and solve the problem
I think you missed my poimt - I dont fully trust the judgement of inexperienced third parties
Dan
BEFORE doing anything put identifying marks on the loader hoses connected to ports C and D on the hydraulic block. I would suggest paint or tape using RED for C and BLUE for D. Take a picture of the hoses with the identifying markings.
AFTER the hoses are marked swap the C and D connections and take another picture. Put the 3pt lever in the full down position, start the tractor, and test loader operation. After testing put the hoses back in their original locations.
Post the BEFORE and AFTER pictures and tell us what if anything changing the connections did to loader operation.
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Lets recap:
- You measured 2600 PSI pressure at the loader inlet hose.
- You measured 8+ GPM flow at the loader inlet hose
Is that correct?
Dan