[AT] Spam> Hydraulic Oil Ffoaming

Wed Sep 16 09:35:27 PDT 2015

That is correct, I had a WD with the piston pump.   However Massey used 
the PMO to lubricate all the trans and rear end gears.

On 9/16/2015 8:45 AM, charlie hill wrote:
> My old Allis tractors have high pressure (3500 psi) piston
> pumps and they use 20 wt auto transmission fluid or hytran.
>
> Charlie
>
> -----Original Message-----
> From: Cecil R Bearden
> Sent: Wednesday, September 16, 2015 8:49 AM
> To: Antique tractor email discussion group
> Subject: Re: [AT] Spam> Hydraulic Oil Ffoaming
>
> The old 65 had multi power and used the PMO, The mf135 had the piston
> pump in the sump, so I would use PMO if it were mine.
>
> Cecil in OKla
>
>
> On 9/16/2015 7:22 AM, Chuck Saunders wrote:
>> The need for PMO is due to brass components and an incompatibility with
>> additives in later formulations. I have gotten it from NAPA though it did
>> have to be ordered into the store.
>>
>> On Tue, Sep 15, 2015 at 11:41 PM, Scott Williams
>> <swillia5 at rochester.rr.com>
>> wrote:
>>
>>> So would my '72 MF 135 use the PMO?  When you asked if it was a 35
>>> Deluxe,
>>> I
>>> thought of Multi Power, is that the reason a Deluxe needs the PMO?  I
>>> don't
>>> have that, just the 6 forward, 2 reverse.
>>>
>>> Scott in Brighton NY
>>>
>>> -----Original Message-----
>>> From: at-bounces at lists.antique-tractor.com
>>> [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Cecil R
>>> Bearden
>>> Sent: Tuesday, September 15, 2015 7:02 PM
>>> To: Antique tractor email discussion group
>>> Subject: Re: [AT] Spam> Hydraulic Oil Ffoaming
>>>
>>> Charlie:
>>> Most all of them used the PMO 90 Fords and Ferguson and MF until MF
>>> started
>>> using the engine  mounted pumps and ford when they started the
>>> 1000-5000 series.  The old ferguson system with the piston pump in the
>>> bottom of the rear end used PMO 90.  The easiest way to remember was the
>>> piston pumps used the PMO...
>>>
>>> Cecil in oKla
>>>
>>>
>>> On 9/15/2015 2:51 PM, charlie hill wrote:
>>>> Cecil,  I never knew the Deluxe model used mineral oil.
>>>> If I remember right that is the same thing you run in Fuller
>>>> Roadranger transmissions.
>>>>
>>>> Charlie
>>>>
>>>> -----Original Message-----
>>>> From: Cecil R Bearden
>>>> Sent: Tuesday, September 15, 2015 2:20 PM
>>>> To: Antique tractor email discussion group
>>>> Subject: Re: [AT] Spam> Hydraulic Oil Ffoaming
>>>>
>>>> I would also bet its water in the oil instead of really foaming.  The
>>>> gearshift boot and the top link shaft into the tip deck are the 2
>>>> places to get water in.  Try to keep the tractor out of the =weather
>>>> if at all possible.
>>>> Also, if it is a  35 Deluxe, it requires PMO 90Wt  This is a Pure
>>>> Mineral OIl 90 Wt.  303 fluid and MF1129A is20 wt.  90Wt gear oil is
>>>> equal to about 50 wt motor oil.  It must be Pure mineral oil or it
>>>> will foam. Gear oil like GL5 will foam. The screen should be located
>>>> between
>>>> 2 "cups" one on top and one on bottom and held with a bolt with a tab
>>>> on the head to remove it.  I worked in the local MF dealership while
>>>> in H.S. and college from 68-75, back there in the old days....
>>>>
>>>> Cecil in OKla
>>>>
>>>>
>>>>
>>>>
>>>> On 9/15/2015 11:00 AM, charlie hill wrote:
>>>>> Dennis,  Bo's advice is sound but one thing you can look for.  If it
>>>>> sits completely unused until you get back to it, before you start it
>>>>> up take the drain plug out.  The fluid will have had time to
>>>>> completely settle out and if there is water in the system it will
>>>>> come pouring out first, followed by the oil.
>>>>> If you drain it like that and let some of the oil out, then put the
>>>>> plug back in, top it off and try it and see if the problems is gone
>>>>> or improved.
>>>>>
>>>>> I don't have a lot of MF experience but I've had water get into the
>>>>> hydraulics on my Allis tractors and was able to get it out using this
>>>>> method.
>>>>> I agree with Bo, changing it out is good advice.  Either way drain it
>>>>> before you ever start it up and the water and crud should come out
>>>>> first.
>>>>>
>>>>> Charlie
>>>>>
>>>>> -----Original Message-----
>>>>> From: Dennis Johnson
>>>>> Sent: Tuesday, September 15, 2015 10:11 AM
>>>>> To: Antique tractor email discussion group
>>>>> Subject: [AT] Spam> Hydraulic Oil Ffoaming
>>>>>
>>>>> I have a MF35 Deluxe on Oklahoma. 3 point used to work fine a year
>>>>> ago, but get weak and slow after 2 hours of use. Now it works for 10
>>>>> to 15 minutes and then the oil foams and lift stops working until
>>>>> after it sets and the foam goes away.
>>>>> I have checked the screen and it seems to be OK by feeling around it,
>>>>> but have not taken it out. Feels like it is wired in place. Oil level
>>>>> is
>>> fine.
>>>>> I wonder if there is condensation in the oil causing the foaming.
>>>>> I also wonder if the relief valve is dumping oil and that is causing
>>>>> foaming.
>>>>> I have not had enough time in Oklahoma to spend a lot of time trying
>>>>> various things. Next time there I plan to completely drain the system
>>>>> and reseal covers that are leaking.
>>>>>
>>>>> Any thoughts on why this is foaming?
>>>>>
>>>>> Thanks
>>>>> Dennis
>>>>>
>>>>> Sent from my iPad
>>>>>
>>>>> Sent from my iPad
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