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Farmall & IHC Tractors Discussion Forum
:

Hydraulic Fill Cap Vent - Farmall H & M

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Rein_Quest

04-07-2018 07:58:55




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Until now all the Farmall I used had the vent cap for filling the hydraulic oil. Now I've seen two that have extra hydraulic equipment and they just have pipe fittings for caps. No vents.
My manual only mentions closing the vent in the section about the remote control (a.k.a. Christmas tree valve).
What was the function of the vent? Other than maybe letting humidity get in?




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Rein_Quest

04-09-2018 19:57:18




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 Re: Hydraulic Fill Cap Vent - Farmall H & M in reply to Rein_Quest, 04-07-2018 07:58:55  
I found a dipstick listed on the H schematic in IHC's MyShed. Must have been original. Though I'm sure there was aftermarket ones made.



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roy prins

04-09-2018 17:21:07




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 Re: Hydraulic Fill Cap Vent - Farmall H & M in reply to Rein_Quest, 04-07-2018 07:58:55  
the original cap was vented and the dipstick I am not so sure was standard - anyways I have dipsticks for sale if any body wants one -- 10 bucks plus shipping -- Roy



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rustyfarmall

04-07-2018 11:18:48




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 Re: Hydraulic Fill Cap Vent - Farmall H & M in reply to Rein_Quest, 04-07-2018 07:58:55  
Quoting Removed, click Modern View to see

Most of those dipsticks got lost or were tossed a long time ago. They were mostly just a nuisance.



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Rein_Quest

04-07-2018 09:34:02




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 Re: Hydraulic Fill Cap Vent - Farmall H & M in reply to Rein_Quest, 04-07-2018 07:58:55  
Ah so the H I just bought shouldn't operate a single action because a previous owner just put a pipe cap on it.
I'll have to have another look at it too because I don't remember a dip stick.



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Pete 23

04-07-2018 09:12:41




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 Re: Hydraulic Fill Cap Vent - Farmall H & M in reply to Rein_Quest, 04-07-2018 07:58:55  
You need a vented cap when using single action hydraulic cylinders. Close it when switching to double action when using IH christmas tree valve.

Also, original cap had a filtering element in cap. The original dipstick had a venting washer on dipstick so that filter (cotton waste) would not get sucked into pump. Instant pump failure when that happens.



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FastFarmall

04-07-2018 09:45:44




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 Re: Hydraulic Fill Cap Vent - Farmall H & M in reply to Pete 23, 04-07-2018 09:12:41  
Say Pete23, would real course brass, looking, shaving's work, in the vent cap, like what we use in the kitchen sink ?



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