ford 4400

[Brian Tyree]

I have a 4400 ford 3 cylinder diesel that the hydraulics stopped working. I thought that it needed fluid so I added some but it still didn"t work. In the past I have had the shaft for the front mounted pump move and I have had to reach down and move it forward. I did that and now I am getting some hydraulics. Just a jerking of the cylinders, but also a "howling" from the back of the tractor. I can"t figure out what is happening. Any idea"s would be appreciated.

 

[Brian Tyree]

I just was playing around with the 4400 and I figured out( I think) that either the shaft that drives the hydraulic pump or the splines internal to the pump are bad. When I push and secure the shaft forward it worked long enough to get the bucket and backhoe up. If I have it at low RPM it works some. When I rev it a little it works less. Does anybody know where to buy a new pump if I need one? I will pull it and look at it in the next day or so. Thanks Brian

 

[sixbales]

Your pump is probably OK. Stripped splines are fairly common. My neighbor had this problem, and it would make a growling noise when he put a load on it, and the loader wouldn"t work. I could see that the shaft was rotating, but the pump was not.