Transmission Breather idea - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 12-15-2009
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Transmission Breather idea

I was thinking of adding a breather to my M5OD tranny after fixing the Hurst shifter leak and putting freeze plugs in the shift rail holes. I just don't want another seal to blow and leak tranny fluid again. I thought about drilling a hole in the top cover plate and adding a breather barb, putting a hose from it up to the engine compartment, then adding a breather cap from a dirtbike like this:
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What do you think?
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Old 12-15-2009
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another HURST vent fix - Ranger Power Sports Forum

In the beginning, I was going to do a normal vent like on an axle or a tcase. BUT....I drilled the hole, tapped the hole, and capped it off for a later date. But when I put it all back together, I ground a notch on that hurst base plate that mounts to the trans. Not one bit of seepage AT ALL. All my info is in that thread I linked. I guess I never brought my findings over here to RF.
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Old 12-15-2009
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So, I guess I should just take my shifter off and grind like a 1/8" notch in the base plate and re-seal it. I already used a homemade gasket and gasket maker to fix the leak. Should I just make another one with a gap in it too?
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Old 12-16-2009
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Only actual gasket i'm using is between the case and that lowest hurst bracket. I royally distroyed my rubber one so now I use silocone and it's held up quite well. Better seen in the pics which I'm 102% positive you looked at. lol.

Yeah...pop that thing off, run a cutoff wheel a few passes thick about half the depth of the material...clean it up...reseal...bolt back together. I'm VERY pleased with the results.

I did the "original" hurst fix using that red rubber and it only put a bandaid on the problem...it eventually spewed ATF again.
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Old 12-16-2009
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Try looking at this.

http://www.ranger- resistance/forum/showthread.php?t=52
And Shane yours leaked? I just checked mine yesterday and after a year of that fix, I have nothing.


**** this, why the hell is RR censored? Just take out the space between the dash
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Old 12-16-2009
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Uh jeff look at that link again... lol. I assume the url starts with an Ranger and ends with Resistance with a dash between? lol.

Same thread I linked him too on RPS. That url you linked is blocked here. Yeah...mine leaked. Not much, but some. After this grind, i've got NOTHING. Even after a 4hr 75mph straight run on the freeway, not even a pink fog anywhere.
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Old 12-16-2009
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I believe you about this fix, and I'm gonna try it. But I'm just wondering, how does it keep it from throwing fluid up to the shifter and out that relief cut?
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Old 12-16-2009
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So its seriously as easy as notching the base plate? I did the red rubber gasket fix and i have ATF everywhere just after a couple months.
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Old 12-16-2009
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Quote:
Originally Posted by vista4.0 View Post
So its seriously as easy as notching the base plate? I did the red rubber gasket fix and i have ATF everywhere just after a couple months.
Mine did the same thing. Check your shift rail plugs.
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Old 12-16-2009
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Quote:
Originally Posted by bjohnson238 View Post
Mine did the same thing. Check your shift rail plugs.
ill have to do that tonight.
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Old 12-17-2009
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Quote:
Originally Posted by bjohnson238 View Post
But I'm just wondering, how does it keep it from throwing fluid up to the shifter and out that relief cut?
My theory is the location being way high up, and having a relief doesn't let the pressures of inside the case force fluid out the weakest spot. ie: hurst flange or the rubber rail seals.

I'll throw a post together something with all my pics and findings one of these days. Everything it'll say is in that thread I linked.
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Old 12-17-2009
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Quote:
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That url you linked is blocked here.
ummm... dare I asky why?
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Old 12-17-2009
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Originally Posted by 08XLT4x4 View Post
ummm... dare I asky why?
pm sent...
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