FLU419 front loader hydraulic pump issues.

[spalinko]

Yes that's my plan, I have the belt and I have time to do it tomorrow, but just in case the pump bearing and/or shaft is bad (in which case I might be able to take the bearings and/or the shaft to Granger or Whistler and get a copy) but I need to locate a replacement just in case.

Wouldn't it be worth trying to put a correct belt on the pump you already have?

 

[peakbagger]

Wouldn't it be worth trying to put a correct belt on the pump you already have?

I agree entirely, ultimately you need the right belt and may need to clean off the rust on the pulley faces from years of sitting (many SEEs seem to loose their hoods so the belts and pulleys are sitting outside). Even if the old pump is bad, you need to clean out the hydraulic system of whatever crud caused the first one to go bad.

 

[The FLU farm]

I may have missed it, but why is the pump suspected to be bad in the first place? A slipping belt won't kill it, just make it not work right.

Not the greatest comparison, but I wouldn't be concerned with wheel bearings or axle seals if getting a flat tire. I'd just fix the tire.

 

[spalinko]

Yes originally when the pump failed it was making a horrible screeching sound, sounded like a bad bearing and because it's been sitting for so long getting the pulley off was difficult and I'm also working on dump trucks and other vehicles so in the meantime I was trying to find a replacement pump in case it wasn't repairable.

Yesterday I did put a new belt on there hooked it all back up got the tension right and bled the air out of the system and it seems to be operating it is a little bit weak.

My new belts and sandpaper some parts cleaner did the trick for now.

 

[The FLU farm]

Yes originally when the pump failed it was making a horrible screeching sound, sounded like a bad bearing...

Most likely the pump didn't fail, but what you heard was the belt squealing.

And the front hydraulics are a little weak on a good day.

 

[319cssb]

FWIW there is safety relief valve on the loader crossarm that limits the loader circuit hydraulic pressure. Some folks have suggested cranking up the setting to get more capacity out of the loader and at least one individual claims to have done so. The hoses are not rated for higher pressure. There could also be issues with the actual loader components. I can not recall off hand what the setting it but 2000 psi sticks in my mind

How do you crank up the setting on it?

 

[peakbagger]

I have not done it but on typical relief valve if there isnt an adjusment screw hidden under a cap to adjust the preload on the relief, then

How do you crank up the setting on it?

I have not done it, but this thread mentions cranking up a screw FLU419 Front loader | SteelSoldiers Since it is an inline relief valve my guess is the discharge hose needs to be removed and there should be nut on the inside of the valve body that can be turned with a socket, typically screwing it in increases the output pressure while screwing it out reduces the pressure.

 

[319cssb]

I have not done it but on typical relief valve if there isnt an adjusment screw hidden under a cap to adjust the preload on the relief, then

I have not done it, but this thread mentions cranking up a screw FLU419 Front loader | SteelSoldiers Since it is an inline relief valve my guess is the discharge hose needs to be removed and there should be nut on the inside of the valve body that can be turned with a socket, typically screwing it in increases the output pressure while screwing it out reduces the pressure.

I did t see anything like that when I had mine apart. Are you sure you’re not talking about the valve on the left side of the boom?

 

[peakbagger]

I did t see anything like that when I had mine apart. Are you sure you’re not talking about the valve on the left side of the boom?

Dont shoot the messenger, #2 is the relief valve that controls loader pressure. Someone who has actually done it will need to reply.

 

[The FLU farm]

Wouldn't the pressure relief be on the actual valve, behind the cab?

 

[319cssb]

Wouldn't the pressure relief be on the actual valve, behind the cab?

There is a relief valve that equalizes pressure between lift and tilt cylinder

 

[319cssb]

Dont shoot the messenger, #2 is the relief valve that controls loader pressure. Someone who has actually done it will need to reply.

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Avoidance, deterrence, de-escalation. We don’t shoot at anyone for no good reason.