warning beep

rustyjeep · Feb 27, 2012

Hi all, could somebody please tell me why I can't get the warning beep to shut off. Its driving me crazy, I turned it off at 50 hrs and 250 I believe, and I dont know if it came on at 500 or not. I'm at 986 as of today,I have been running with it unplugged for the last 200 or so. I plugged it back in a couple of days ago and the stupid thing still beeps after about 5 minutes of run time.I have no warning lights or anything so I don't know I would like to stop it. Oh its a 7520, thanks for any advice.

rustyjeep · Feb 28, 2012

shameless bump

rsewill · Feb 28, 2012

Since you needed to bump it, I would give up and call the dealer.

bindian · Feb 29, 2012

Rusty Jeep,
Boy are you putting the hours on it. I gather you are talking about the beep that keeps sounding when maintenance is suppose to happen. I will check at home and post how to reset that blasted buzzer.
hugs, Brandi

DavesTractor · Feb 29, 2012

rustyjeep said:
Hi all, could somebody please tell me why I can't get the warning beep to shut off. Its driving me crazy, I turned it off at 50 hrs and 250 I believe, and I dont know if it came on at 500 or not. I'm at 986 as of today,I have been running with it unplugged for the last 200 or so. I plugged it back in a couple of days ago and the stupid thing still beeps after about 5 minutes of run time.I have no warning lights or anything so I don't know I would like to stop it. Oh its a 7520, thanks for any advice.

A beep at almost exactly 5 minutes on a 20 series is generally telling you that the transmission scavenging pump pressure is low. That is a serious deal, as it oils the top shafts/bearings in the transmission. Disconnecting the warning signal is a very bad idea.

If your trans oil level is good and you have not pulled hard with it for extended periods, you probably have enough splash in the trans to keep the upper bearings lubed....but you need to get this to your dealer asap.

The service needed beeper comes on right away and is cleared as per the manual.

bindian · Feb 29, 2012

DavesTractor said:
A beep at almost exactly 5 minutes on a 20 series is generally telling you that the transmission scavenging pump pressure is low. That is a serious deal, as it oils the top shafts/bearings in the transmission. Disconnecting the warning signal is a very bad idea.

If your trans oil level is good and you have not pulled hard with it for extended periods, you probably have enough splash in the trans to keep the upper bearings lubed....but you need to get this to your dealer asap.

The service needed beeper comes on right away and is cleared as per the manual.

Oh WOW Dave. I thought this was just a malfunctioning service beeper. So is this an indication of a clogged strainer screen?
hugs, Brandi

DavesTractor · Feb 29, 2012

Not necessarily a clogged screen. This a a different pump that just oils the upper shaft in the trams. Perhaps lost its prime or failed pump. But hopefully just a wire knocked off or a bad sensor.

rustyjeep · Feb 29, 2012

Thanks for the info Dave, but why would the service light not be on? Could you tell me more about this pump problem, you have me worried? I would call my dealer but they went out of business 6 months after I bought it. I have never needed to find one since I have not had any problems. I echo Bindians question about the strainer screen, or am I way off base here. Also where can I get a service manual, I do all of my own mechanic work. Again thanks for your help.

DavesTractor · Mar 1, 2012

rustyjeep said:
Thanks for the info Dave, but why would the service light not be on? Could you tell me more about this pump problem, you have me worried? I would call my dealer but they went out of business 6 months after I bought it. I have never needed to find one since I have not had any problems. I echo Bindians question about the strainer screen, or am I way off base here. Also where can I get a service manual, I do all of my own mechanic work. Again thanks for your help.

I don't type fast enough or have deep enough technical knowledge to do this justice. But we have run across this a couple of times over the years, and the peculiar thing is the almost exactly 5 minute turn on time of the beeper. Whenever I have seen that, it is indicative of the scavenging pump. This isn't the PS pump, nor is it the implement pump. It is a pump in the trans, and I really do not know if it has a filter or screen, I think it does not.

Since you are handy and do not have a dealer nearby, I'd get a shop manual for the tractor. Otherwise you'll need to get it to a dealer for diagnosis I am afraid. I'm not the service manager at our dealership, but I like to hang out in the shop occasionally and even get my hands dirty now and then, just to keep me aware of issues and solutions. I think the sender unit that checks pressure and relays that info to the dash is under the floor board, near center, on top of the transmission. Should have a wire or two going to it. See if you can find it and make sure it is hooked up. I think that is where you would check pressure also. Not a handy location.

Hope that helps.

rustyjeep · Mar 1, 2012

Dave I really want you to know that I am grateful for your help.Tomorrow I will check the sender. Do you know off hand if the tractor has to be split to replace the pump. I'm not afraid to split it, I've done a few before. If by chance a split is required I will replace the clutch while I'm in there. I have a shop manual on order next day air so we will see how fast it arrives. $220.00 to air freight a book,WOW, oh well gotta have it. I will let you know what I find.

bindian · Mar 1, 2012

DavesTractor said:
I think the sender unit that checks pressure and relays that info to the dash is under the floor board, near center, on top of the transmission. Should have a wire or two going to it.

Hope that helps.

Dave,
This brings up another question. How easy is it to remove the floor platform in the 20 series?
hugs, Brandi

DavesTractor · Mar 1, 2012

bindian said:
Dave,
This brings up another question. How easy is it to remove the floor platform in the 20 series?
hugs, Brandi

Not real easy if I recall correctly, but it has been at least a couple of years since we had to pull a platform. I think they should have made a little access hole in the platform to make life easier....but then again if you have to remove the platform, get a holesaw and make an access for any future issues. By doing so, you can almost be assured that you'll never need to access it again! Sort of a reverse Murphy's Law deal.

MtnViewRanch · Mar 1, 2012

DavesTractor said:
Not real easy if I recall correctly, but it has been at least a couple of years since we had to pull a platform. I think they should have made a little access hole in the platform to make life easier....but then again if you have to remove the platform, get a holesaw and make an access for any future issues. By doing so, you can almost be assured that you'll never need to access it again! Sort of a reverse Murphy's Law deal.

I am dead serious when I say this. I have had items that were acting up on a semi regular basis. Bought a replacement part figuring that I would replace the part the next time that it acted up. I have never had to replace the part, it never acted up again, going on 17 years now. I just carry the part in the truck and all is well. Of course now that I'm talking about it, it will act up. :laughing:

My transmission on my newest truck was leaking and it actually was getting pretty bad. Took it to a couple of tranny shops to see what they would charge to fix it. :shocked: Trans stopped leaking within a day or 2, and no it didn't stop leaking because it's out of fluid, fluid level is just below full.

Kind of weird, but I'll go with it. :thumbsup:

JerryK · Mar 1, 2012

Be a lot harder to pull the platform if it had a cab sitting on top of it

..... [ even a custom 'alu-min-ium' one. ] You have to look at the bright side....

rustyjeep · Mar 1, 2012

Well I found the pressure switch and it has no wires on it,just a spade terminal sticking out of it. Now I have to find the wire. I spent an hour under it looking for a stray wire with no luck . So now I am in the process of removing g the floor board to see if it is on top somewhere. Brandi, Dave is correct, its a pain in the you know what. I'll remove the diff lock pedal and hopefully it will come out with a little persuasion. I'm just trying to find the wire and the wireing schematic to see where it should be. I'll let you know.

DavesTractor · Mar 1, 2012

Very good news! Hoped it was a wire or sender.

bindian · Mar 2, 2012

rustyjeep said:
Well I found the pressure switch and it has no wires on it,just a spade terminal sticking out of it. Now I have to find the wire. I spent an hour under it looking for a stray wire with no luck . So now I am in the process of removing g the floor board to see if it is on top somewhere. Brandi, Dave is correct, its a pain in the you know what. I'll remove the diff lock pedal and hopefully it will come out with a little persuasion. I'm just trying to find the wire and the wireing schematic to see where it should be. I'll let you know.

A Wiring Schematic is in the Owner's Manual. I gather you have been doing some series brush hogging or moving tree and limbs. Usually a wayward sharp stick finds the wires and eats them. I had a limb rip off my Neutral safety switch wires before, but they were still there, just unplugged. Guess they were not tasty enough to eat.

hugs, Brandi

rustyjeep · Mar 2, 2012

Well I've got good news and bad news,as I said earlier I could not find the wire under the tractor. I removed the operators station and the floor boards so I could have easier access to the pressure switch and the wiring harness.Well there is no wire that goes to the pressure switch and there has never been one.The switch still has the paint on the spade terminal so nothing has ever connected.I unscrewed the pressure switch and started it up and had plenty of fluid, so I don't think the pump is bad so that's a good thing. Now I am really stumped as to why the warning beep still comes on.

rustyjeep · Mar 2, 2012

OK I have another question for anybody with a 20 series. When you first turn the key on and all the lights on the dash come on for the self test do the healthy,service,low pressure, and high temp lights illuminate with the rest of the dash lights? Mine do not, but as soon as it starts the healthy light comes on. Is this normal? Maybe this could be the source of the constant beep?

MtnViewRanch · Mar 2, 2012

rustyjeep said:
OK I have another question for anybody with a 20 series. When you first turn the key on and all the lights on the dash come on for the self test do the healthy,service,low pressure, and high temp lights illuminate with the rest of the dash lights? Mine do not, but as soon as it starts the healthy light comes on. Is this normal? Maybe this could be the source of the constant beep?

I'm not 100% sure about all the lights being on or not.

It's one of those things of yes this looks normal. As far as the green healthy light coming on, mine does that periodically when I start the tractor and it will stay on for a few minutes and then goes out. So sometimes yes, sometimes no. More no than yes. It may have something to do with a self diagnosis every so many hours.

Sorry that I can't be more help.