Woods backhoe problems

[80cj]

i have a woods bh70-x backhoe on my mf1532. i have had it a year and the backhoe has noticably lost power since it was new. the dealer says that nothing is wrong, so i called another local woods bh owner and he has been having the same issues. has anyone else noticed the same problems?

thanks
shawn

 

[Brad_Blazer]

Lost power = low pressure. I would install a gauge on the hydraulic line feeding the backhoe and check the relief pressure when operating each valve section by running it against the ground or the end of travel.

 

[80cj]

the dealer has put gauges on it and says all pressures are correct. i am going to the dealer this afternoon and call woods from there to see what we can figure out.

i was just really surprised when i talked to another woods bh owner and he was having the same problem. he also has a woods FEL on the same tractor that is NOT getting weaker. so now i am curious if anyone else is having the same problem and it is a design issue.

thanks
shawn

 

[Mousefield]

Used mine yesterday and works just like when I got it new about 21 months ago. :thumbsup:

 

[wedge40]

the dealer has put gauges on it and says all pressures are correct. i am going to the dealer this afternoon and call woods from there to see what we can figure out.

i was just really surprised when i talked to another woods bh owner and he was having the same problem. he also has a woods FEL on the same tractor that is NOT getting weaker. so now i am curious if anyone else is having the same problem and it is a design issue.

thanks
shawn

Did you witness this? You can get the stuff to do this yourself for about $25.00. I'm sure people here can lead you through the process.

Wedge

 

[kennyd]

Is it powered from a PTO driven pump or from the tractor's hydraulics? We need that info to help you better.

 

[IXLR8]

I had the same thing happen to my Kioti BH, not sure if you might have the same problem. When I first got it, I could drag the tractor around with the BH, now I can barely move any dirt. Static pressure to BH was fine, I didn't have the hardware to measure pressure while using the BH. Actually, I was using borrowed gauges and didn't want to modify tools that weren't mine. Turns out, even thought the dipper cylinder only had 30 hrs on it.. it had a blown seal. This seems to be more common on the Kioti cylinders than folks would like. Cylinder rebuild kit from Kioti- $265.00, new seals from Martin Fluid Power- $22.00, at my door 3 days later. Will know in 2 weeks when I put BH back on tractor if that fixes the issue.

See pics here;

http://www.tractorbynet.com/forums/kioti-owning-operating/166305-thanks-folks-i-found-problem.html

 

[80cj]

the backhoe uses the tractor's hydraulics. i took yesterday afternoon off work and spent it with the dealer to try to figure it out. by luck, the AGCO rep was there and offered some suggestions.

they said they had tested all the pressures (at the bh cylinders), but he asked them to do it again. we also found out that when they measured the back pressure, they didnt use a 'T', just a dead-headed leg. that was disheartening. after hearing that, i just want my tractor back and i will do it myself.

at the bh cylinder we measured 1800 psi @ idle and 2000 psi @ 2500 rpm

on the FEL 2200 psi @ idle and 2300 psi @ 2500 rpm

right now it is plumbed so it goes from the pump to the back hoe, to the FEL.

the AGCO tech said this needs to be changed because the back hoe doesn't have power beyond and also to preotect his tractor. (he doesn't care about the bh, it's not a massey) according to the previous dealer that worked on it, he said that originally had it hooked up that way, but changed it to help with the power problem.

we called the Woods tech and they said we could turn up the relief valve setting, so we did. now it is about 2000 psi @ idle. but when we went out and used it, it didnt seem to make much difference.

they never did measure the back pressure. i asked them to try to get the wood's rep to come out and look at it. so the dealer said he will call him today.

it has been there a month, i need to get it back, im just really frustrated. i bought a brand new tractor because i have a 1,000 projects and this was supposed to help with them, not BE ONE! grrrr.

thanks
shawn

 

[80cj]

Mousefield,
that is what mine USED to do. now it can barely pic up its own weight! with the boom fully extended, it can barely pick up a bucket full of dirt.

thanks
shawn

 

[J_J]

You folks are definitely having pressure problems. What is the max pressure on the hyd pump? If you put the gage in right after the pump, it will then show any pressure, no matter what valve you activate. If the BH has the correct pressure, then everything should work as advertised. If the reliefs are not going off, then there is hyd fluid leakage somewhere. What is the relief setting on the BH.

You said the fluid went to the BH first, and it read 1800 psi, and then you said that the FEL which is downstream read a higher pressure of 2300 psi. Where on the BH did he take the pressure reading. In doing all the pressure readings, the gage should be installed before any component, after the pump. Everything downstream should have the same reading unless the relief for that component is set different. If there are 2 or 3 relief, then they should be all set the same, about 50 to 100 psi below pump max pressure.