[AT] Need help with newer compact tractor

Sat May 21 14:45:46 PDT 2016

Mike:
That TSC oil states it is a multi grace or multi Vis.  I found somewhere 
it was a 10W30 or 40, If so, and the viscosity improvers are working 
correctly or maybe a little more concentrated, then the viscosity could 
be too thick at the higher heat.  That 400 SUS is at 100F, while the 
others are specified at 100C, another 112 deg F higher......   I had 
this same problem with the hydrostat trans in my old JD2750 Swather.  I 
found out later that the transmission is no longer available nor 
repairable.  I had to buy a used one.   The "yellow Bucket" THF I bought 
for $19.99 was too thick for the system.  This I was told by the company 
rep who used to overhaul these transmissions made by Vickers.  I bought 
John Deere  Hytran that replaces the original 303 fluid.  It surely does 
sound like your oil is overheating.  You may have a good civil case 
against TSC, but chances of getting any results within our lifetime are 
slim and none.

  I had an 1155 V-8 Massey that was a good 130hp tractor, but we had 
some leaks in the rear lift cylinders.   My Dad topped off the lift oil 
with a barrel of Lathe and Milling machine Way oil I had bought surplus 
from a retired machinist for $250.   That oil was over $35/gal in a drum 
at the time.  It had an extra stickiness. The entire hydraulic system 
turned to crap and it would barely move anything.  It started leaking at 
every seal.   My retired father was just too busy to drive 10 miles to 
buy a $25 bucket of the cheap stuff that would have worked fine..  It 
was my fault according to him because I did not hide the barrel from 
him!!!! It was marked in 4 inch letters WAY OIL  !    We ended up 
selling the tractor for $2000 to the Mexican market.

I use that yellow bucket stuff in my old dozers and trackhoe.  I have 
noticed that if you open the bucket the additives are concentrated at 
the bottom.   I try to turn the bucket over for an hour before I pour it 
into the tank....

Cecil in OKla

On 5/21/2016 12:42 PM, Mike M wrote:
> Cecil, I think you and Steve might be on to something with the
> viscosity. I wish the Traveller brand oil would give me the Centistokes
> value at 100C and I suspect I could call on Monday and find out. Because
> I've noticed a lack in hydraulic power the service guy adjusted the
> pressure to 2900 lbs, which is over the 2700 Mahindra calls for. He's
> not concerned with that as long as the bypass isn't being tripped. I
> think a change in oil may be in order. If the pump is hunting for oil it
> could be introducing air into the system.  I managed to find the Gulf
> product at a local Autozone store of all places.
>
> Mike M
>
>
> On 5/21/2016 1:07 PM, Cecil Bearden wrote:
>> I looked up some viscosity sites, and 20w motor oil is 68 centistokes
>> and 30w is 100 centistokes.   57.5 would be closer to 10W motor oil
>> which is what my old Ingersoll compressor calls for or Dexron ATF or
>> type A transmission fluid. So, I would be thinking that the oil is too
>> thick and the pump is scavenging and giving you a mixture of oil and air
>> which can do weird things to rubber components at high pressure.    We
>> also do not know  if this tractor works at 3000 psi or 1500
>>
>> Cecil in OKla
>>
>>
>>
>>
>> On 5/21/2016 7:26 AM, Stephen Offiler wrote:
>>> Hi Mike:
>>>
>>> When fluids are REALLY different, they can certainly eat up seals.  But the
>>> magnitude of difference I am talking about is like the difference between
>>> brake fluid and petroleum-based oils.   For example:    DOT 3, 4, and 5.1
>>> require EPDM rubber for seals.  But if EPDM sees petroleum, it softens and
>>> swells... like 25% or more.  Like a frost heave, this swelling is
>>> impossible to contain.  It extrudes itself right out the glands.
>>>
>>> For this to be the case, what came out of that TSC pail would have to be
>>> pretty wrong, is my gut feel.  But someone could have really screwed up at
>>> the factory I suppose... in that case you would not be the only one with
>>> problems!
>>>
>>> Is this the fluid you put in?
>>> http://www.tractorsupply.com/tsc/product/traveller-universal-tractor-trans-hydraulic-fluid-5-gal
>>>
>>> One thing to note here is the viscosity.  TSC fluid specs 400 Saybolt
>>> Universal Seconds (SUS or SSU) at 100F (38C).  An online calculator tells
>>> me 400 SUS is 86.2 Centistokes.  They SHOULD, but fail, to say anything
>>> about viscosity index and viscosity at elevated temperature 100C.  I then
>>> looked up the Gulf fluid you mentioned, one that Mahindra specifically
>>> calls for, and find it is 57.5 CentiStokes at 40C.  Whoa.  57.5 is pretty
>>> different from 86.2.
>>>
>>> Not sure what to make of all this and nothing I'm saying here is real
>>> definitive, just trying to shed some more light on the situation.
>>>
>>> SO
>>>
>>>
>>> On Fri, May 20, 2016 at 2:11 PM, Mike M <meulenms at gmx.com> wrote:
>>>
>>>> So about a year ago I bought a Mahindra 4035 40 HP diesel tractor. I
>>>> starts, runs and works fine, but I've had some problems with leaks
>>>> lately. At the 100 hour mark Mahindra wanted me to change the hydraulic
>>>> filter, which sits on the side of the rear housing. I talked to the
>>>> service guy at the dealership and he said I'd lose about 2 gallons of
>>>> fluid when I did that, even with the one rear tire up on a block. It
>>>> holds 10 gallons overall, and TSC had their premium universal
>>>> hydraulic/transmission fluid on sale (which states it meets or exceed
>>>> Mahindra specs)  for $35 for 5 gallons. For me it seemed like a no
>>>> brainer to just dump the fluid and replace it rather that trying to
>>>> guess how much I'd lose.
>>>>
>>>> Everything went fine, I had to remove a side cover as well as the filter
>>>> to get to a screen they wanted to have cleaned on the first service
>>>> only. After that the tractor performed as it should but after about 50
>>>> hours I've started to develop leaks in the hydraulic system. They fixed
>>>> one by a large square diverter valve under the tractor and today they
>>>> are fixing another leak from the power steering block up by the steering
>>>> wheel.  I called today and talked to the service guy and he says they
>>>> are puzzled because the leaking o-rings they are looking at today appear
>>>> burned, as if exposed to excessive heat. Another concern that I brought
>>>> up to them is that the loader doesn't seem to have quite the lifting
>>>> capacity as when it was new.
>>>>
>>>> My question is, can fluid cause these type of problems? In the manual
>>>> they call our for Mahindra fluid, Gulf Universal Tractor Transmission
>>>> fluid, Mobil 424, Shell Donax and a few others, all of which are nearly
>>>> impossible to find.  Can a fluid be SO wrong that it would cause
>>>> problems? Right now they are looking at anything that might be causing a
>>>> continual "deadheading" situation, but with that little 3 cylinder
>>>> diesel I think I would notice that.
>>>>
>>>> Any and all thoughts greatly appreciated.
>>>>
>>>> Regards,
>>>>
>>>> Mike M
>>>>
>>>>
>>>>
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