[Farmall] dirt in hydraulic unit

[WALTER AVERY]

i have a 48 super a that has gotten dirt into the hydraulic unit.
i found this when i replaced the fluid.
where can dirt get in?

thanks, Walt

----- Original Message -----
From: Jim Becker <jim.becker at verizon.net>
To: Farmall/IHC mailing list <farmall at lists.antique-tractor.com>
Sent: Fri, 30 Jul 2010 10:29:22 -0400 (EDT)
Subject: Re: [Farmall] Clutch Decision

Probably time to get a rebuilt pressure plate assembly.  First off, you will 
probably have trouble finding new fingers as separate parts.  Secondly, if 
it has so much use that the fingers show a lot of wear, the rest of the 
assembly probably isn't in exactly top condition any more (e.g. weak 
springs, worn friction surface).
Jim Becker

--------------------------------------------------
From: "Al Jones" <farmallsupera at earthlink.net>
Sent: Thursday, July 29, 2010 7:28 PM
To: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
Subject: Re: [Farmall] Clutch Decision

> This is a very timely discussion.  When I start putting the 39 A back
> together, I need to decide what to do.  I haven't done a real close
> inspection, but the only thing I noticed when taking it apart was that the
> release fingers were worn severely.  Can you just replace them or had I
> might as well replace the pressure plate as a unit?
>
> Thanks,
> Al
>
> --------------------------------------------------
> From: "Jim Becker" <jim.becker at verizon.net>
> Sent: Thursday, July 29, 2010 6:26 PM
> To: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
> Subject: Re: [Farmall] Clutch Decision
>
>> If you only have one spot you will probably be OK.  How big is it?
>> Smaller
>> than the diameter of a pencil you probably would never notice.  Try
>> sanding
>> the spot.  It may disappear or at least get smaller.  Other than sanding
>> the
>> spot, there isn't anything you can do to remove it other than replacing
>> the
>> pressure plate.  If there are too many hard spots the clutch will 
>> probably
>> want to chatter.
>> Jim Becker
>>
>> --------------------------------------------------
>> From: "Ben Wagner" <supera1948 at gmail.com>
>> Sent: Thursday, July 29, 2010 3:25 PM
>> To: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>; "At"
>> <at at lists.antique-tractor.com>
>> Subject: Re: [Farmall] Clutch Decision
>>
>>> On 7/29/2010 2:28 PM, Jim Becker wrote:
>>>> One of the main reasons people buy the whole works is so they won't 
>>>> have
>>>> to
>>>> do it over, especially at a time when they may actually need to be 
>>>> using
>>>> the
>>>> tractor (or truck or car).  If this is just a tractor you play with,
>>>> some
>>>> of
>>>> those concerns don't apply.  Besides, an A is easy to split, so doing 
>>>> it
>>>> twice isn't that big a deal either.  Inspect the parts and only replace
>>>> what
>>>> it really needs.
>>>>
>>>> Pressure plate:  Clean rust off the friction surface with sand paper.
>>>> Inspect for hard spots (look blue), cracks or scoring.  Check the
>>>> springs
>>>> and levers for damage.  Make sure the levers are all adjusted the same.
>>>> If
>>>> that all looks good, reuse it.
>>>>
>>>> Flywheel:  Same as the friction surface of the pressure plate.
>>>>
>>>> Driven disk:  Check the thickness of the lining.  If it is mostly worn
>>>> out,
>>>> replace it.  If not, check that it came off clean, with all friction
>>>> material in place and rivets tight.  If it has imbedded rust or a hard
>>>> glaze, sand paper it until the glaze is uniformly broken.  Do this
>>>> outside
>>>> with wind to your back and wear a mask so you don't breath in any dust.
>>>> If
>>>> it is old, it may have some asbestos in it.  If it looks good at that
>>>> point,
>>>> reuse it.
>>>>
>>>> While you are in there, check the pilot bearing for wear and give it a
>>>> little oil.  Check the throwout bearing too.
>>>> Jim Becker
>>>>
>>>>
>>> Checked the pressure plate, and I do have one of those hard spots.  What
>>> do I do to correct this?
>>>
>>> Thanks,
>>> Ben Wagner
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