[AT] Spam> Hydraulic Oil Ffoaming

[Chuck Saunders]

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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