4310 Rear PTO problems

[Tom4310]

I have a 2003 4310 eHydro with about 440 hours on it. I was moving snow today and thought I would check out the PTO. When I engage the switch, the dash light comes on but the PTO doesn't spin. It isn't the seat interlock and the shaft will spin, by hand 1/4-1/2 a turn until it bumps against something.

I don't routinely use the PTO and only used it for 1 hour a couple of years ago. It worked fine and I am not hard on my equipment.

I have the PDF tech manual and looked at the troubleshooting section. It does mention possible problems like worn clutch, low hydraulic pressure, damaged gears etc. The PTO is just about unused and can't be worn. It worked fine before and I don't know of any damage that may have happened. I can't troubleshoot any of this and it would need a service tech to determine the problems.

Is there a simple problem here that I may be missing? Anybody have a similiar problem?

A neighbor is going to trade me a new 15k PTO generator for a rifle so that is why I was playing with the PTO today.

Thanks,

Tom

 

[jd110]

I would check the wiring under the tractor for any disconnected plugs. I believe the solenoids for the pto are under the right foot rest area toward the rear.

 

[Tom4310]

I never thought of that. I will check it in the morning.

Thanks

 

[RollTideRam]

I don't know anything about 4310's but my former 2510 had mid and rear pto. I had a lever to select from mid, rear or both. My 3320 only has a rear pto so I don't have a choice. Just something I thought when I saw your question. JC

 

[CLinton_in_FL]

Where you able to get this figured out? I am having the same problem now?

 

[CLinton_in_FL]

Well, and update on my problem. It is not electrical. I tested everything except for actually removing the solenoid from the tractor and all worked out like it should. So looks like I will be calling the dealer tomorrow in the AM and see if they have the service manual in stock, if not, I will be ordering one tomorrow. I will take some pictures of the guts when I get things apart. If someone wants to give me the next thing to check, feel free to post what and how.

 

[mfreund]

I was looking through the tech manual for something for you to look at and I think if it is not electrical then you have expensive problems. How did you determine the electrial was not the problem?

You need to have 12v at the 574b yellow wire at the rear PTO solenoid. Continuity to ground on 010d black. Then you could have a bad solenoid. If solenoid is good then I would agree with you.

If electrical checks out then you have low hydraulic pressure, bad seal in actuating piston or worn disks in pto clutch.

 

[CLinton_in_FL]

Thanks for looking. That is what I was afraid of. I think it is going to be the clutch because it did not hear a pop or anything like that. This all started when I hit a rotten stump when I was mowing. Yes, I do have a slip clutch on the PTO shaft, but apparently something hit just right to cause my problem. I have ordered the technical manual, and am awaiting the arrival before I start taking things apart.
I was able to determine it was not electrical for the following reasons. I have 12 volts at both the PTO and MFWD solenoids. The PTO Solenoid has the correct resistance as well. The seat switch is working correctly, as well as with the on off switch. At this point I hope it is as simple as a broken shaft, because the clutch looks like a pain. Oh well, we will see.... Thanks again for looking.

Clinton

 

[dfkrug]

At this point I hope it is as simple as a broken shaft, because the clutch looks like a pain.

Since the 4310 is only an incremental update to the 4300, I think yours uses
the same kind of PTO clutch and brake that my 4300 uses. My tractor
engages the PTO with a mechanical lever, instead of any solenoid, however.

The 4x00 clutches were a weak point and many failed. Mine is apart
presently, but will soon go back together. My sump had many clutch disc
fragments in it.

Your clutch disc basket may have failed....access to it will not require
splitting the tractor. It can be fully accessed thru the rear PTO cover
and the rockshaft housing on top.

 

[CLinton_in_FL]

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."