4310 Rear PTO problems

[mfreund]

Thanks for the heads up. This is what someone else posted on another form. I wonder what sleeve he is referring to.


"I got my tractor back. The problem was hydraulic fluid getting to the PTO clutch. There is a sleeve that the PTO shaft rotates in that slipped enough so the fluid could not flow thru the ports. The mechanic commented that he had never seen such a thing and it took him a while to find it. You were right, the fix was pricey."

I think he is talking about a bushing.I looked at the parts catalog and there are bearings on the pto output shaft and the idler shaft. Here is a diagram of the PTO clutch. Could be #5??
http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.HomePageServlet_Alt


It sounds like you did a great job diagnosing the electrial portion of the PTO!!

 

[CLinton_in_FL]

Well, I received my manual today in the mail. It doesn't look to bad. The only thing I am really dreading is draining the 6.8 gallons of hydraulic fluid.

On a positive note, looks like I will only have to remove the rear cover to get to everything. And only take the clutch / brake assembly apart halfway, assuming that is the problem.

 

[dfkrug]

Well, I received my manual today in the mail. It doesn't look to bad. The only thing I am really dreading is draining the 6.8 gallons of hydraulic fluid.

On a positive note, looks like I will only have to remove the rear cover to get to everything. And only take the clutch / brake assembly apart halfway, assuming that is the problem.

Use the opportunity to clean your hyd suction screen. It may also give you
a clue as to what has broken.

I was able to get the PTO brake out the PTO hatch, but to disconnect the
PTO shifter, I had to get access from the top (rockshaft hatch). I needed
to do that to get the 9-stage PTO clutch out. Since yours uses a solenoid
to shift, maybe you can get the clutch out without messing with the
rockshaft housing?

 

[CLinton_in_FL]

Since yours uses a solenoid
to shift, maybe you can get the clutch out without messing with the
rockshaft housing?

That is probably the reason.. I will have to look for the suction screen as well. Thanks for the tips...

 

[dfkrug]

I will have to look for the suction screen as well.

It is behind the plug in this photo (arrow). I would remove the rear magnetic
plug, too.

Having been in there, I would like to see how the PTO is different on the
4310, vs my 4300.

 

[CLinton_in_FL]

Having been in there, I would like to see how the PTO is different on the
4310, vs my 4300.

I will be sure to take some pictures of it apart. I might start on it this weekend.

 

[RogerH]

Before you open the tractor up, you might want to check out a couple easy items first. I see where you have checked the electrical to the solenoid, but didn't remove the solenoid. I saw a case once where the solenoid was plugged with metal chips. Cleaned out the chips and the PTO was back in operations. I seem to recall that their are some test ports on the side of the solenoid block - your manual should show those if my memory is correct. If you don't have a pressure gage, it still might be worth opening the PTO pressure check port up and seeing if you get any flow when the PTO is turned on.

 

[CLinton_in_FL]

Before you open the tractor up, you might want to check out a couple easy items first. I see where you have checked the electrical to the solenoid, but didn't remove the solenoid. I saw a case once where the solenoid was plugged with metal chips. Cleaned out the chips and the PTO was back in operations. I seem to recall that their are some test ports on the side of the solenoid block - your manual should show those if my memory is correct. If you don't have a pressure gage, it still might be worth opening the PTO pressure check port up and seeing if you get any flow when the PTO is turned on.

Well as suggested, I went to check the PTO Hydraulic pressure at the solenoid block. I purchased a gauge, and then removed the plug on the test port, only to find a weird thread. I looked for adapters at Tractor Supply and Home Depot, but they did not have anything that would come close to fitting it. Does anyone know the correct thread size for these ports? If I have time tomorrow, I am going to stop by a different place to see what they have.

Thanks

 

[CLinton_in_FL]

Well as suggested, I went to check the PTO Hydraulic pressure at the solenoid block. I purchased a gauge, and then removed the plug on the test port, only to find a weird thread. I looked for adapters at Tractor Supply and Home Depot, but they did not have anything that would come close to fitting it. Does anyone know the correct thread size for these ports? If I have time tomorrow, I am going to stop by a different place to see what they have.

Thanks

In case anyone is wondering, it is a M12 x 1.5 thread.....

 

[mfreund]

You beat me to it I was going to suggest it may be metric!!