Front Axle Breather Question Dana 30 - Page 2 - JeepForum.com
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post #16 of 25 Old 05-12-2013, 10:35 AM
RDH
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You can use vacuum line if you want but fuel line or transmission line will get you better longevity.


1978 CJ7: 304, 3Spd, AMC 20 Rear, Thrush Welded Mufflers W/ Turndowns, Unknown Front, Worn out Dana 20 case
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post #17 of 25 Old 05-12-2013, 11:30 AM
Renegade82
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Originally Posted by CJBADASS View Post
Okay,

Quick question. Does anyone know what type of tubing that is for the differential ventilation? I want to replace both front and back (Dana 30 / 44). After 27 years mine is looking sort of old and ratty.

Regards,

Kevin C.
I just finished rebuilding both axles and I used some 5/16" fuel line. It's reinforced rubber, what else do you need out of a breather hose?

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post #18 of 25 Old 05-12-2013, 12:34 PM
jimrs
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Excuse my ignorance but I had no idea what that hose was for on my 84. Being a breather hose are you suppose to uncap it when wheeling off road.
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post #19 of 25 Old 05-12-2013, 03:06 PM
ki4cye
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It shouldn't be plugged. They should have vent caps in them. They don't need to be removed.

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post #20 of 25 Old 05-12-2013, 05:43 PM
jimrs
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Thanks, I'll look at it more closely, maybe it is not a cap but vent.
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post #21 of 25 Old 05-12-2013, 08:27 PM
Pirate40
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My vent tube is broke off right at the axel housing. Does anybody know where you can get that part that actually fits into the top of the axel housing. Is that part threaded in?

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post #22 of 25 Old 05-12-2013, 08:36 PM
ki4cye
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It's probably pressed in. If you wanted to take the axle apart so you could clean it you could thread it

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post #23 of 25 Old 05-12-2013, 09:40 PM
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It's not threaded in. The fitting has these ridges in it than make it almost like a pressed fit. I don't even mess with these fittings anymore. I'd rather tap the hole (it's already the right diameter) for a 1/8" NPT fitting and thread in a hose barb that you know won't pop out.
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post #24 of 25 Old 05-14-2013, 07:30 PM
Pirate40
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Originally Posted by CSP View Post
It's not threaded in. The fitting has these ridges in it than make it almost like a pressed fit. I don't even mess with these fittings anymore. I'd rather tap the hole (it's already the right diameter) for a 1/8" NPT fitting and thread in a hose barb that you know won't pop out.

Good Idea, thanks!

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post #25 of 25 Old 06-22-2013, 04:57 PM
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Pirate40-I replaced the axle breather hose on mine today. I'm bored to tears so I figured I'd post pics of the whole shootin match (not that anyone needs them)



I loaded up the 1/8" NPT tap with grease to catch the metal shavings and keep them out of the diff.


I'd use a bigger barbed end next time, but this is all my hardware store had:




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