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1520 JD questions

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Bryant

02-24-2001 17:10:26




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I have been hunting for a used tractor 40-50 hp to use for general chores around my place - bush-hogging, keeping the road smooth, hauling manure, etc. This morning I went to look at a used JD 1520 w/ a JD 145 loader. The tractor seems to run good and all the hydraulics work, it just needs some paint and body work. The serial # makes it a '72 model (143xxx).

I noticed a couple of things that concerned me and am hoping one of you knowlegable JD people can help me:

1. One of the hydraulic hoses was leaking at a coupling. The fluid was milky white. Is this the normal color or does it indicate a problem somewhere?

2. There is a pedal behind your left heel that is stuck all the way down and will not move. The sales guy said it was the differential lock and fairly cheap to fix. Is it really the differential lock? If it is, what does the repair normally involve? If it is not, what is it and where is the differential lock?

3. With the clutch pedal pressed all the way in, the PTO kept turning. Is this normal? If I buy this tractor will I need a slip coupler between the tractor and the bush-hog?

Any help you can give me is much appreciated.

Bryant

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guff

02-27-2001 05:49:24




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 Re: 1520 JD questions in reply to Bryant, 02-24-2001 17:10:26  
I bought my 1520 about 1 month ago, and the pto was doing the same thing. When you move the lever between the gear shifts it sometimes takes about 20 sec to stop spining. I would try and get my hands on a owners manual. I got mine through this web site, $30.00 I paied $6,000 for mine without a loader 1970 mdl. My diff lock is stuck in the down possition as well. I'm still working on it. If I free it I will post a message for you.

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Sam

02-25-2001 14:53:09




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 Re: 1520 JD questions in reply to Bryant, 02-24-2001 17:10:26  
I would be very concerned with milky hydraulic fluid as the JD 1520 fluid is shared by the transmission and wet brakes. The wet brake linings will be destroyed by the water. If brake work is required and done by a dealer it will cost about a $1000 for both sides. (I have a 830 and 2030 both are similiar design)The differential lock should free up with a hammer and penetrating oil. I would say the tractor set outside allot not good for JD tractors of this vintage.

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Deere-hunter

02-25-2001 09:44:47




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 Re: 1520 JD questions in reply to Bryant, 02-24-2001 17:10:26  
Yes that is the differential lock pedal. I dont know how big a project it is to fix.The PTO should disengage when the clutch pedal is pushed about three quarters of the way down. The milky transmission oil should'nt be a big deal i would drain it just to make sure it isn't full of ice or water a little moisture isn't the end of the world. Sounds like it needs some work but you could'nt ask for a better little tractor they are a great little machine. Whats he asking for it? Good luck.

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Bryant

02-25-2001 11:46:14




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 Re: Re: 1520 JD questions in reply to Deere-hunter, 02-25-2001 09:44:47  
Deere-hunter,

Thanks for the response. The owner was originally asking $8400 for it. I offered $7500 and he accepted. I put a deposit on it yesterday to hold it while I investigated my concerns - running tractors with loaders under $10k are hard to find around here and don't stay for sale for long.

Bryant



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G Taylor

02-25-2001 09:40:47




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 Re: 1520 JD questions in reply to Bryant, 02-24-2001 17:10:26  
If the locking diff is busted expect some serious $ to repair. Is the arm free to move or does it feel connected to something. Have seen a clutch fail to disengage when the bearings were not greased through the pop off covers on the left side of the clutch housing.



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Bryant

02-25-2001 11:49:47




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 Re: Re: 1520 JD questions in reply to G Taylor , 02-25-2001 09:40:47  
G Taylor, Thanks for the response. I jumped on the lever, tried wedging it up with my foot, and grabbed it and yanked - didn't budge at all in either direction.



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Raye

02-24-2001 20:59:45




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 Re: 1520 JD questions in reply to Bryant, 02-24-2001 17:10:26  
Milky oil indicates water in the system,either
from condensation or plain old rain getting
into the tranny,probably through gear shift boot.
The diff lock pedal can be froze from not being
used,but being stuck down might indicate a
problem.When it is down it is ingaged.It's
not working at all or you would not be able
to turn the tractor as this locks both back
wheels together.If he says it's cheap to fix,
let him fix it.With the clutch all the way
down the pto should stop,UNLESS it has
independent pto which works off a seperate
lever between the gearshift levers,and does
not work off the clutch.Sounds like it needs a lot
of work.

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Bryant

02-25-2001 07:10:03




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 Re: Re: 1520 JD questions in reply to Raye, 02-24-2001 20:59:45  
Raye, Thanks for the response.

Is water in the hydraulic fluid a cause for major concern? Or a simple drain, flush, refill, and replace the boot and most likely the problem goes away?

Are you familiar enough with the 1520 to say that the lever I mentioned is definitely the diff lock? I drove the tractor and turned complete circles in both direction. No problems there, so it must not be working at all.

Can anyone out there help me with the PTO/clutch question?

Thanks, Bryant

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RayE

02-25-2001 09:33:54




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 Re: Re: Re: 1520 JD questions in reply to Bryant, 02-25-2001 07:10:03  
Changing the hydraulic oil will solve your oil
problem,I've worked on these for 20 years.The pto lever (Flat lever) is on the left side
along with the diff lock pedal,but you ingage
it with your foot.Like i said in my other post,
the pto should stop with clutch ingaged,if it
doesn't it will have to be split to fix.There's
2 different pto's on those tractors,Live and
independent.Where's your pto lever?It makes
a difference how it operates.

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Bryant

02-25-2001 11:57:56




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 Re: Re: Re: Re: 1520 JD questions in reply to RayE, 02-25-2001 09:33:54  
RayE,

" . . . you engage it with your foot". That explains why it was in an awkward position to shift it by hand. It is on the left side, right next to the diff lock pedal, as you said. The lever sticks up maybe 8" and is flat on the top (like you would grab it with your heel . . makes sense.) How would I know which kind of PTO it has?

Thanks again for you help, Bryant.



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G Taylor would have to have two left feet

02-25-2001 12:55:09




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 Re: Re: Re: Re: Re: 1520 JD questions in reply to Bryant, 02-25-2001 11:57:56  
To engage the pto with a two stage clutch having the flat bar on the left side of trans case, the clutch must be pushed all the way down or grind the gears. The indendent lever at the base of the dash engages a hydraulic clutch, no gear shifting/no foot clutching. That diff lock may have some pieces laying in the bottom of the trans case. Hope they say out of the way.



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RayE

02-25-2001 12:13:25




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 Re: Re: Re: Re: Re: 1520 JD questions in reply to Bryant, 02-25-2001 11:57:56  
Independent pto,which was an option,has a lever
between the 2 gear shift levers.If you have this
the pto would not stop when you push the clutch
all the way down.With the standard pto pushing
the clutch down all the way should stop it.
A lot of pto's on loader tractors didn't get
used a lot and would stick.You could try hooking
the pto to something that would give it a load
and hold the clutch down to see if it will
break loose,otherwise it will have to be split.
I should also say the Independent pto was hydraulically operated and was not connected
to the clutch,ie the name Independent PTO.

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