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Vent tube for Dana 20 transfer case?

OK, let me try to clear up a few things.

Somebody said that the D20 hasn't got a vent hose. This may or may not be accurate. I just do not know. What I do know is that if there is a vent hose, it is going to LOOK similar to the one on the front axle.

Find the vent hose on the front axle and follow it up and into the engine bay. Its top will be mounted to the fender to the side of the radiator opening in the grill, or some equivelent location. It will be roughtly level with the carburator. I think the idea is that if the carburator is not drowning, the axles ought not be filling with water, if the carburator is drowning, filling the diffs with water is merely adding insult to injury.

Now that you have identified the front axle vent hose and the small one-way valve on the top of it, go back to the firewall and look around for another hose with the same type of one-way valve. This will lead to the tcase, IF the tcase has a vent hose. My D300 has a vent hose, and I made the assumption that the D20 also had a vent hose.

Reply to
CRWLR
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I stand corrected (it's been a couple years since I had mine out). Below is a link to a picture of the Dana 20 vent. As you can see, it is on the tail shaft housing directly above the speedometer cable. Sorry for the misinformation. Mike is also correct about the transmission NOT having it's own vent. It vents through the T'case (shared) vent.

Reply to
cj573cj5

The transmission is a totally separate entity.

It does not 'share' anything at all with the t-case.

The transmission has it's own stupid button vent. If you want to cross high water safely, the button vent needs to go and a hose vent needs to be added.

I used a piece of steel gas line to make a nipple for the hose to clamp on to once I pulled the button vent out.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's

cj573cj5 wrote:

Reply to
Mike Romain

Just to pick nits, the 1976-`79 T-150 transmission has its _own_ vent cap, as Mike said. The only possible venting passage between the two cases is sealed by the gasket. For those model years -- which covers the CJ-5 that I just finished reassembling -- there are vent caps but no vent hoses.

Reply to
Lee Ayrton

Reply to
L.W.(ßill)

On my '73 there is not a vent (cap) on the T14 or the T15. On the T18 we are getting ready to install in my buddy's '79 there is one. This, believe it or not, is one of the newer Jeeps in our group. I was noticing that his axles are vented by hose. All my older stuff had the vent caps which have since been plumbed to higher areas. I guess I need to step forward into the mid 70's.

Reply to
cj573cj5

Hmmm. When the gasket on my `79 gave up it pumped gear oil from the transfer case into the tranny, to the point it was coming out the tranny breather cap.

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Tealady spills the beans on AFU's new business plan.

Reply to
Lee Ayrton

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