Re: Front axle seals
O.K. Daren here's what I think you may be experiencing:
When you have a bucket full of material and your dumping, the weight of the material tends to cause the bucket to dump faster than if it was empty. This will create a slight air void inside your cylinders. Thus the 'spongy" effect you describe. The increased speed of the bucket dumping exceeds the ability of the cylinder to completely fill on the opposite side. When you power the bucket in the other direction you basically purge the air and the cylinders are tight again. Most likely the same thing with your backhoe just shows up as a different symptom do to the working nature of the two different implements. I can't remember if it was an option in 1996 but they have overcome this problem with a new style loader valve (4 position), That adds a regeneration circuit which ports fluid to both sides of the cylinder and eliminates this effect. I know, if you port fluid to both sides of the cylinder how does that work? Why does'nt it just lock up and not move? I'ts simple once you think about it for a minute. The front side of the cylinder has the rod in it, while the back side does'nt, therefore due to the larger displacement on the backside it overcomes the front side and no more air bubble.
O.K. Daren here's what I think you may be experiencing:
When you have a bucket full of material and your dumping, the weight of the material tends to cause the bucket to dump faster than if it was empty. This will create a slight air void inside your cylinders. Thus the 'spongy" effect you describe. The increased speed of the bucket dumping exceeds the ability of the cylinder to completely fill on the opposite side. When you power the bucket in the other direction you basically purge the air and the cylinders are tight again. Most likely the same thing with your backhoe just shows up as a different symptom do to the working nature of the two different implements. I can't remember if it was an option in 1996 but they have overcome this problem with a new style loader valve (4 position), That adds a regeneration circuit which ports fluid to both sides of the cylinder and eliminates this effect. I know, if you port fluid to both sides of the cylinder how does that work? Why does'nt it just lock up and not move? I'ts simple once you think about it for a minute. The front side of the cylinder has the rod in it, while the back side does'nt, therefore due to the larger displacement on the backside it overcomes the front side and no more air bubble.
