JD 2010 Industrial--hydraulic pump problem

This was posted on the John Deere forum with no response. Maybe more eyes will see it here and someone can help.

I just finished replacing the clutch on my 2010 industrial backhoe/loader. The new clutch works fine, but the hydraulic pump seems to not be working. This pump is located behind the clutch and works the power steering and the syncro plates in the transmission.

Nothing was disassembled on the pump which worked fine before the clutch job. I did of course have to disconnect the power steering lines that go to the front wheels, but nothing else was disassembled.

Upon start-up after the clutch job, the hydraulic pump doesn't seem to be working. It seems to be engaging, but is making a "dry" sound like it isn't getting oil or something. I tried the disconnect lever just under the clutch on the left side and it changes the pitch somewhat, but the noise doesn't go away. Also when I engage the powershaft for the rear hydraulic pump for the backhoe and loader there is more "dry" sound coming from that unit and there is not enough pressure to lift anything.

What could I have done wrong? Is it possible there is air in the system? I did clean the filter before this operation and it was working fine before. I did jack up the front wheels and cycle the steering from side to side at least a dozen times thinking that may help purge any air. I also cracked the lines while cycling the steering wheel and almost no oil comes out.

Any and all help appreciated.

Had a regular, not industrial 2010. It had a metal mesh screen and sometimes cleaning was not enough and had to replace with a new filter. Hopefully the industrial version has a better system and a bigger pump.

KEH

You are talking about the belly-mounted pump that feeds the power steering? If so, we used to have terribly problems with those things. Often the problem was the relief valve that is built right into the pump.

i read your post other nite but had to look at my industeral 2010 before i posted it has a dry clutch but only for touque liniter when you press the clutch pedal it dump oil pressure off the powershift hi,low rev. so i nnot sure yours is a true industeral, now mine also has a second hy filter beside the transmissin screen the second filter is for the power shift pump. they both ues same hy fluid from transmission, the front pump that work loader and or back hoe,, mine does not have a back hoe,, now it has its own hyd fluid tank on the fender, i think mabe you need to check your hyd fliuds make sure you are full. it almost sounds like you dont have any fluid in transmission or in hyd tank on fender te second filter is to rear of screen and under right side foot board

OK, mystery is solved.

The problem turned out to be the wrong pressure plate. When I took the old pressure in to be rebuilt, the shop was not able to rebuild my old unit so they ordered a rebuilt from another shop. When it came in a week later of course my old pressure plate was already in a pile somewhere else so no side-by-side comparison was done.

This model tractor uses two different transmissions, a hi-lo-reverse and a constant mesh transmission which is what I have. The constant mesh transmission has an extra shaft which is run off the pressure plate with a set of splines. The pressure plate I got is smooth inside and fit just over the splines on the shaft. That is why I was getting a grinding noise and why the pump wasn't working. Actually it probably was turning just a little which explains a dribble of oil thru the lines.

So now I have the pleasure of breaking the tractor apart again and installing the right part. Thanks to each of you for your replies and interest.

You had me going this morning on this problem. I am glad you figured it out.
I have the right clutch if you need one.
abcrepairparts

I guess this is one time when paying the DEERE price for the CORRECT part might have been a good idea.

Who da thunk it!

Update--the tractor is now apart again. What I found was the pressure plate did have splines, but it is too big for my tractor. The result was the noise of the splines not meshing properly.

From an eyeball check, it does not appear my tractor shaft was ruined by the mismatch. Hopefully I can now get the correct pressure plate and be back in business.

I'll bet the clutch shop won't offer to reimburse me for the time and trouble.

before most all my coustmers switch most there loader tractor to hyd foward rever, i did a maybe 4 or 5 clutches a mouth, the one thing i try to alway remember is to make sure the clutch plate fits onto the transmission splines have found more then one that they didn't match, just one thoes things you learn over the years, now the shop my help on labor but probly not but never hurts to ask most they can say is no.