Ford 960

[Jacob Vyhlidal]

I have a ford 960 tractor and the hydraulic pump is making a
light chatter sound. We have replaced the timing gears as well
as the gear on the back of cam shaft and that helped but still
has a little noise. I have also replaced the bearing on the
inside of the pump as well as the needle bearing. It has a
piston pump. I hoping someone has another idea. Also the
sound goes away as the three point is raising. Thanks

 

[riveroadrat]

How sloppy is the pump drive gear? The noise goes away because you take all the slop out of something in the drive line. I had a so-called uncle that swapped his bad motor into one of our tractors while he was using it. I believe it was the same motor he tried to get me to adjust the valves on it for him. Funny thing was I couldn't adjust the valves because I suddenly got all confused, handed him the manual and said I couldn't do it. Now I've never had any trouble adjusting valves on any motor and still don't except for that one time. I believe that's the motor he swapped into our tractor because it was making that rattling sound. It wasn't the valves, it was a worn out motor that I thought had a bad gear on the pump. After swapping pumps it still had the rattle so I pulled the pump again as I thought it maybe had a loose pump driving cam gear at the back. No loose bolts so I started pying on the gear with a large screwdriver and the cam gear that was bolted firmly to the cam would wiggle up and down at least an 1/8". Either it was a worn block as they don't have cam bearings or it was a wornout camshaft. The slop was there. I hope that's not your problem as the pump driven gear just slips on it's shaft. I know that some remotes have some valves that do not automatically kick off when loaded and they will wear the dickens out of the crank, camshaft and pump gears. I was round baling with a NH 850 chain baler when I discovered all that and started hearing the pump gear rattling. Ask me how I know. I put a pressure light on any circuit that doesn't unload by itself now.

 

[Tom Bond]

Jacob. Have you checked the backlash on the pump when installed? Mine was making just a light chattering or clicking sound and at the advice of other users on here, I doubled up the pump to block gasket. Perfect. No noise at all. Service manual even suggests using a shim if necessary.

 

[Joe_R]

Jacob. Have you checked the backlash on the pump when installed? Mine was making just a light chattering or clicking sound and at the advice of other users on here, I doubled up the pump to block gasket. Perfect. No noise at all. Service manual even suggests using a shim if necessary.

I know this was an old thread, but I have the same problem with a noisy hydraulic pump. I've changed timing gears, rebuilt the hydraulic pump. Put a pump drive gear on the back of the camshaft. It's still loud. I did take the gasket out of the pump to motor mount to eliminate any backlash play. The chatter is still there. Perhaps now I don't have enough backlash. But the noise was there when I had a little backlash. I even tried a different pump. Camshaft bearings seemed to have no play. I'm pretty much at the end of thinking I can ever quiet it down. Running Travelers Universal Hydraulic/Transmission oil. Do you know how much backlash the pump should have if any? Or perhaps I could try running a thicker oil?
Thank you for your time.

 

[Keith Williams]

I know this was an old thread, but I have the same problem with a noisy hydraulic pump. I've changed timing gears, rebuilt the hydraulic pump. Put a pump drive gear on the back of the camshaft. It's still loud. I did take the gasket out of the pump to motor mount to eliminate any backlash play. The chatter is still there. Perhaps now I don't have enough backlash. But the noise was there when I had a little backlash. I even tried a different pump. Camshaft bearings seemed to have no play. I'm pretty much at the end of thinking I can ever quiet it down. Running Travelers Universal Hydraulic/Transmission oil. Do you know how much backlash the pump should have if any? Or perhaps I could try running a thicker oil?
Thank you for your time.

You took the gasket, this fellow said he ADDED a thicker gasket to solve the problem

 

[Joe_R]

You took the gasket, this fellow said he ADDED a thicker gasket to solve the problem

Yes, I took the gasket out and sealed it with RTV to eliminate the backlash. But still noisy, so I'll try adding gaskets. It sounds like it worked for Tom. Thank you. I appreciate your reply.