Model 3140

630 Views 2 Replies 2 Participants Last post by llewdaert, Oct 8, 2015

llewdaert

Discussion Starter · Oct 7, 2015

Greetings from Australia,

I am looking for a work tractor, and have an opportunity to purchase a JD 3140 that has hydraulic issues.
The pto wont work, the 3 point link arms, and the steering is likewise. The vendor suspects an internal leak that is a known problem with these.
I also notice the front drive shaft seems to be awkward placed and perhaps vulnerable to damage.
I have looked on google and it seems the brakes deteriorate and contaminate the hydraulic oil?

So I am seeking advice, -are these good performing, long lasting, and trouble free[once the hydraulic problem is solved]
-or are they troublesome, unreliable, and hard to get spares for.....

Thanks for your help
James

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Tx Jim

· #2 · Oct 8, 2015

Are you very knowledgeable on JD closed center hyd's? Closed center hyd's can be very difficult even for an experienced tech to diagnose & repair. Trying to diagnose a hyd system that doesn't operate at all is even more difficult. JD tractors of this era have a long history of failed/leaking hyd supply tubes that are intended to furnish oil to hyd hi-lo & hyd ind pto. Most brake problems are caused from moisture accumulation in hyd oil.

If I was going to buy & repair the tractor in question it would have to be cheap/cheap!!!!!!!!!!!!!!!:banghead3

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llewdaert

Discussion Starter · #3 · Oct 8, 2015

Thankyou for your reply. I am a professional mechanical tradesman , but I lack any specific knowledge of these systems.
I could sense some danger with this tractor, and you have confirmed it for me.
The tractor is cheap, but even for free I think I would hesitate, then decline.

Far easier to wait, save money, and pay more for a known model with a good record of service.

I suspect I could repair this machine only to have it fail again in the near future.

Thankyou again for your help

Tx Jim said:
Are you very knowledgeable on JD closed center hyd's? Closed center hyd's can be very difficult even for an experienced tech to diagnose & repair. Trying to diagnose a hyd system that doesn't operate at all is even more difficult. JD tractors of this era have a long history of failed/leaking hyd supply tubes that are intended to furnish oil to hyd hi-lo & hyd ind pto. Most brake problems are caused from moisture accumulation in hyd oil.

If I was going to buy & repair the tractor in question it would have to be cheap/cheap!!!!!!!!!!!!!!!:banghead3

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