TO-30 front loader lifting problem

LLWard

New User
Having a lift issue with the front loader on ferguson TO-30, it lifts but won't pick up much. I'm thinking the hydraulic pump coming off the front shaft is to blame, we sheared the shaft coming out of the front end about a year or so ago and replaced it, didn't think we did any harm to the pump, but have been slowly losing lifting ability ever sense. We put a gauge in the line at the controls only getting about 600 psi or a little more on it, the controls do leak, but I've seen worse, we'll rebuild that one day. Does my thinking that the pump seems to be the issue or is there somewhere else I should be looking. Can these pumps be rebuilt or is there some other way to fix without spending 900 bucks on a new pump. I'm not a mechanic hopefully this makes sense.[list:ce041e6118][/list:u:ce041e6118]
 
Input shaft bent, pump rotor bent, pump has worn out
the walls and fluid is now bypassing internally.

Just a swag.
 
600 PSI is low. Is the pump leaking externally at all? There is usually a relief valve in the control valve if it's a add on. When your trying to lift feel if the pump is getting warmer or if the control valve is getting warmer. Bypass fluid whether from internally leakage from the pump or going over the relief valve in the control valve will warm the fluid/component.
 
(quoted from post at 17:08:27 03/08/14) 600 PSI is low. Is the pump leaking externally at all? There is usually a relief valve in the control valve if it's a add on. When your trying to lift feel if the pump is getting warmer or if the control valve is getting warmer. Bypass fluid whether from internally leakage from the pump or going over the relief valve in the control valve will warm the fluid/component.


No external leaking on the pump just from the controls, there is a screen at the pump that we cleaned, it did have some grittiness that we cleaned out, will check where it is warming.
 


That's kind of what we were thinking, do you think it is feasible to try to find a used pump or is that a crap shoot, I haven't looked yet to see if I could locate a used one?
 
You also failed to mention if this a vane pump or
what design. Possible stuck vane is an option.
before you spend your money, take it apart and tear
it down. Can ya' fix it cheap or what?
Used pump might work if it comes cheap enough or
with a warranty if higher priced.
"As is" should be 30% cost of new at most, IMO.
 
I bought a front pump from this site, works great
on my Wagner, and it was not anywhere near $900,
more like 350 if memory serves.
 
(quoted from post at 04:10:41 03/09/14) I bought a front pump from this site, works great
on my Wagner, and it was not anywhere near $900,
more like 350 if memory serves.

Hay Phil , what model Wagner do you have ? One bucket tilt piston or two ?
 
A little grittyness really means nothing as long as the inlet screen wasn't blocked, although you would heard that. A cavitating pump makes a very distinct noise, like marbles in a coffee can sound. I'm betting it's a gear pump, very few people will use a vane pumps when doing upgrades. Also, Gear pumps are so much cheaper than a vane pump as well. If you look at the housing is it oval or square in shape?

Depending on the pump, they are now where near the 900 number you were thinking. Just need to figure out what size it is so you don't stop the motor when you use it.

BTW, [b:da22f6c9c4]I[/b:da22f6c9c4] wouldn't consider a used pump. If it's a gear pump depending on the fluid condition/cleanliness they just wear out as time goes on. The gritty you describe is dirt, if it's a gear pump It's probably an aluminum gear pump, that dirt gets between the gear and the house and just wear it out. Then pump then starts to leak internally and won't build pressure like your seeing.
 
Hello, If your control handles are rusted up in
the rear of the spool where the springs are to
return it to center it will give you the same
symptoms as it will not let the valve open all the
way and part of the pressure will leak down the
return line, hence low pressure.Make sure they are
getting fill travel on the controls. If you have
double acting cylinders (2 lines on each
cylinder)they can leak by the packing on the
piston and cause pressure loss when lifting.
Normally the loader will leak down on it's own and
will not hold position when this is happening. I
would try to rule out these things before i bought
a pump.- hope this helps-ed
 

Thanks, we do seem to get full range of motion on the controls, the bucket only slowly creeps down when we have a load on it, it will hold itself up empty.
 

The pump is oval shaped, I got the $900 number from a previous search I did with the number I got off the pump, I can't seem to locate the site I was on originally for the cross-reference, I've looked at too many sites I guess. Here's the number off the pump if that helps. 155YC000212-LA M6
 

The pump is oval shaped, I got the $900 number from a previous search I did with the number I got off the pump, I can't seem to locate the site I was on originally for the cross-reference, I've looked at too many sites I guess. Here's the number off the pump if that helps. 155YC000212-LA M6
 
(quoted from post at 16:55:54 03/09/14)
The pump is oval shaped, I got the $900 number from a previous search I did with the number I got off the pump, I can't seem to locate the site I was on originally for the cross-reference, I've looked at too many sites I guess. Here's the number off the pump if that helps. 155YC000212-LA M6

Where are you located, UK? It's a Webtec gear pump with displacement of 1.55 in3/rev, LH Rotation, looks like 5/8"-9 tooth spline. I'm guessing at the ports, 1-3/6"-12 Inlet, 7/8"-14 outlet. Ordering code Numbers you provided are not matching up with the literature.
 
(quoted from post at 07:48:08 03/10/14)
(quoted from post at 16:55:54 03/09/14)
The pump is oval shaped, I got the $900 number from a previous search I did with the number I got off the pump, I can't seem to locate the site I was on originally for the cross-reference, I've looked at too many sites I guess. Here's the number off the pump if that helps. 155YC000212-LA M6

Where are you located, UK? It's a Webtec gear pump with displacement of 1.55 in3/rev, LH Rotation, looks like 5/8"-9 tooth spline. I'm guessing at the ports, 1-3/6"-12 Inlet, 7/8"-14 outlet. Ordering code Numbers you provided are not matching up with the literature.

No, we're in Wisconsin, I just double checked the numbers and I think what I gave you is accurate, pretty good stamp on it. When I was looking I couldn't get a complete match either something close was all I could find, if I remember right, its been a little while sense I was looking
 
Webtec is a UK company now. Northern tool sells Dynamic, less the 200 bucks. Closest thing to your is going to be a GP-F20-25-S9-A. http://www.dynamicfc.com/GP-F20.html That is the link.

You may be able to find other people that offer a pump close to what you are looking need. You may need to adapt the fittings.

Good Luck
 
(quoted from post at 10:38:40 03/10/14) Webtec is a UK company now. Northern tool sells Dynamic, less the 200 bucks. Closest thing to your is going to be a GP-F20-25-S9-A. http://www.dynamicfc.com/GP-F20.html That is the link.

You may be able to find other people that offer a pump close to what you are looking need. You may need to adapt the fittings.

Good Luck

Thank you so much for all your help, I'll relay all this to my hubby, I'm sure he will thank you too :)
 
Probably you won't be able to match the pump
assembly exactly. Just get a pump with similar
pressure characteristics and fashion a new bracket,
etc.
 

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