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Massey Harris & Massey Ferguson Tractors Discussion Forum
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1135 MF Hydraulics

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Travis

08-01-2007 10:32:54




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Hey all,

Got an 1135 in the shop right now of the neighbors that has hydraulic problems. First of all the hyd filter plugged up with filings about 3 weeks ago, so the filter was changed and was kind of hoping that it just hadn"t been changed in awhile. Well, it"s back and the filter is plugged again. These filings are not magnetic, so I was assuming a pump going out, however checking the pressure and flow at the hyd outlets at the rear, I"m not sure. I have over 2100psi and 9 gpm of flow at low idle and at 2000rpm. I"m still going to guess that it is a pump going out, but how do I know which one without tearing them both out and tearing them apart??? Thank you for any help.

Travis

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Briar Creek Stables

08-08-2007 19:11:29




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 Re: 1135 MF Hydraulics in reply to Travis, 08-01-2007 10:32:54  
I wish you the best of luck. I have a Massey 1135 and I have never seen so many hydraulic problems in my life. It seems as soon as you get one thing fixed another problem starts up. So far I've just about rebuilt or replaced everything



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Massey S.C.

08-03-2007 13:29:40




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 Re: 1135 MF Hydraulics in reply to Travis, 08-01-2007 10:32:54  
In my area duals and/or extra pounds would take out ring gear and spider gear shims?



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barnrat

08-03-2007 07:40:37




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 Re: 1135 MF Hydraulics in reply to Travis, 08-01-2007 10:32:54  
If hes got 9gpm at idle then there is nothing wrong with the charge pump. As the minimum allowable is 7 gpm. There could be some sticking of various valves like the unloading valve, distributor valve or priority valve due to contamination. But I doubt it's the charging pump. Doing tests to eliminate the cheap fixes is what I always do before spending some customers money on something they don't need. I've worked on dozens of 1000 series Masseys and have rarely changed a charge pump.

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Danthemasseyman

08-03-2007 07:19:51




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 Re: 1135 MF Hydraulics in reply to Travis, 08-01-2007 10:32:54  
It sounds like the filings are most likely from the brakes being worn out, however, if you need to rev the tractor up when you first start it in order to get the hydraulics, which includes everything from steering to three point hitch, working, then that problem will be the charge pump being worn. The reason you need to rev it up when you first start it or let it run for 30 seconds or so to get your hydraulics working, is that the charge pump is worn enough that it doesn"t prime on its own quickly. Once you rev it up and it primes itself, it will be okay until you shut it down again. That being said, if it is worn enough, it will prime when the oil is cool and you first start it and rev it up, however after it runs for awhile and if the hyd oil gets heated up, which it will start to do if the charge pump is worn because the hyd oil is always slipping past the gears in the charge pump which creates heat in itself, then you will notice your hydraulics actually becoming weaker and or slower as you use the hydraulics and the hyd oil heats up. Reality is you will need to replace the charge pump or rebuild it. It"s not that hard to remove...it is located under the floorbaord in the cab, but it"s not the cheapest thing in the world, but worth it if the tractor is in good shape otherwise. Hope this helps ya out!

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barnrat

08-02-2007 07:29:41




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 Re: 1135 MF Hydraulics in reply to Travis, 08-01-2007 10:32:54  
Brake failure is the Achilles heal of John Deeres and Masseys of that era. The brake has worn so bad that the piston is all the way out and letting brake fillings into the hydraulic system. The final drives will have to be removed from the tractor. At this point if you don't have a service manual get one. The right brake could be OK but will have to be inspected and have new seals installed. The left brake is likely going to need new seals, brake disk and maybe more. The disk is quite expensive they tended to warp on the 1005 series so there are not a lot of used ones out there. It takes me about 10 man hours per axle, plus you'll have to flush the main case to get as many fillings out as you can. The 1005 series Masseys had an automatic unloading valve inside the charge pump assembly. That dumped hydraulic fluid intended for the main pump to ease starting. The engine has to be revved up to 1400 rpm to get that valve to kick out and get the hydraulics to start building pressure. So it's normal to take 30 seconds or so to get the hydraulics to work.

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barnrat

08-01-2007 18:18:07




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 Re: 1135 MF Hydraulics in reply to Travis, 08-01-2007 10:32:54  
It's not the pumps, sounds like they are fine. It's the brakes starting to fail, the pistons have gone past their end points and ruined the seals and you are getting brake fillings in the oil. Don't run that tractor much more or you will be doing the pump over as well. Tell the customer to get their check book warmed up.



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Travis

08-01-2007 19:19:20




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 Re: 1135 MF Hydraulics in reply to barnrat, 08-01-2007 18:18:07  
Okay, this may sound a little better to me, but can you explain this to me a little better, please? Okay, I will admit that the left brake is pretty much nonexistent and the right will actually stop the tractor, but I was going to go through the master cylinder, and I was figuring that all the filings have been filling up the priority valve and everything else, so maybe that's why the brakes and steering and three point don't start working until you raise the RPM's or just wait 30 seconds to a minute.

If it is actually the brakes, which I have been dreading, how long should it take and what kind of money is he looking at?

Thank you for the reply.

Travis

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