4410 with front PTO blower breaks lift cylinder fitting

[jimmer2880]

We have a JD4410, with a front, PTO (from the mid) 59" blower.

When the blower is lowered, below grade, the rear fitting on the lift cylinder hits the blower frame and breaks off.

I'm sure we aren't the first people to have this problem. I also can't believe that JD has such a design flaw.

Has anyone else had this problem?

 

[beenthere]

Maybe it is an assembly problem.

 

[jimmer2880]

not saying it's not an assembly problem. However, it was assembled and installed at the local JD Dealership. Also - the cylinder can only be installed 1 way, due to the bracket type.

 

[pilot-werx]

not saying it's not an assembly problem. However, it was assembled and installed at the local JD Dealership. Also - the cylinder can only be installed 1 way, due to the bracket type.

I would say the dealer screwed up somewhere or the newer ones are different from my 4210. Mine drops off the driveway and into the ditch every time I use it and nothing has broke.

 

[jimmer2880]

After looking at it more, I think the cylinder is wrong.

The port for the hydraulic fitting is at 90 degrees from the direction the pin in inserted. Meaning, if the pin lays horizontal (left to right), the fitting must be either on top, or the bottom. It can't go on the top, because the bracket has a flange on the top, so it must go on the bottom.

If the port for the piston would be on the same horizontal plain as the pin, it would have enought clearance.

We can't turn the cylinder end-for-end, as there isn't enough room on the blower end.

Would one of you, who has a front mount blower, or brush, please take a picture of your cylinder? I'm particularly interested in the location of the hydraulic port in relation to the direction of the pin hole.

I stopped at my local dealer today. They didn't have a blower, or cylinder in stock to look at. The only parts diagram they found didn't show the fitting on the pin side of the cylinder.

 

[kennyd]

Can you post a picture of yours? Maybe I could help modify your setup for you...

 

[DrainPondDesign]

Jimmer,

If this helps.

JD 3320 and 59" blower on the newer (4 year old?) A-frame front mount.

The single blower mount lift cylinder is on the right hand side.

The cylinder is mounted with the pin end uppermost and the pin (bolt) horizontal and fixed to the permanently mounted sub frame.

The rod end is connected to the right movable frame lift arm with a heim joint.

Both hydraulic connections are oriented downward on this cylinder and the rod end one goes to a needle valve to control rate of flow.

I see no clearance problem for the hydraulic fittings if the rod were to be fully extended.

I am not sure but if the blower were in float and dropped below grade suddenly the rod may take all of the impact stopping it. Possibly adjusting the needle valve would slow that rate of drop.

Thanks: While I was looking I discovered a previously unsuspected grease nipple on top of the cylinder's pin end which should be interesting getting a gun onto.

Good luck
Bill

 

[jimmer2880]

Thanks for the info.

Our cylinder is mounted in the center. The dealership (who installed it last year), is requiring us to take the bracket off and take it to them, and they "may" be able to help us. They didn't have a good diagram of the cylinder, nor did they have one in stock.

We use it too much to do that (between the brush and the blower, it's always in use from now until late spring).

We have decided that if we enlarge the notch, which is directly between the brackets, behind the cylinder another 1" down, the fitting will clear.

That will be the the quickest, and easiest. It's just disappointing that we have to do anything on this new bracket.

 

[beenthere]

............When the blower is lowered, below grade, the rear fitting on the lift cylinder hits the blower frame and breaks off.

I'm sure we aren't the first people to have this problem. I also can't believe that JD has such a design flaw.

Has anyone else had this problem?

From reading the rest of this thread, sounds like it may not be the design flaw as prescribed.
Assembly problem yes, but not a Deere design flaw.

Doesn't sound like anyone else has the problem either.

And no pics? :confused3:

 

[jimmer2880]

....
And no pics? :confused3:

Sorry about the no pics. This is a tractor where I work, and I just don't remember to take my camera to work with me

I still think its either a design flaw, or we were given the wrong cylinder.