9in axle vent fitting
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From: Rhode Island
9in axle vent fitting
I pulled the fitting out of the axle housing to clean it and could not see through it. I chucked up a small pilot sized drill bit and tried to clear it, but it seems to be not machined all the way through. So before I drill it out, what am I missing here. Are they supposed to have the same size I.D. through?
And another short one, while I remember it. Are the gaskets to the backing plates necessary, if they are, it must be for keeping out water, no? Mine didn't have any gaskets, and noticed some rust between the axle seal and housing.
And another short one, while I remember it. Are the gaskets to the backing plates necessary, if they are, it must be for keeping out water, no? Mine didn't have any gaskets, and noticed some rust between the axle seal and housing.
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From: Rhode Island
Mine is the same, but that part that is used to hold down the brake tubing tee, isn't bored completely through. The piece looks like it is machined out of 9/16 hex stock, turned and threaded 3/8-24, and bored 9/32 on the end going into the axled housing. It is bored 3/16 on the end that the vent hose goes over, but the bores do not reach each other. I know this isn't really a big deal, but I was wondering if anyone else has seen this before. There was plenty of gear lube in it and no leaks.
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Joined: Jun 2002
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From: Atlanta GA
> So before I drill it out, what am I missing here.
It is suppose to be a vent, not a straight hole, so it has baffles to help prevent water from coming into the axle (air pressure) and grease from leaving with the air when it gets extremely hot.
That being said, when mine have been gunked up, especially the front axle, I have drilled them out (1/4"?) since I run my vent lines up into the frame or body and put a few loops or curves in them.
You can buy them new at NAPA too!
In short, if it is clogged and can't be cleaned, drill it out, and don't worry about it. I never did and had no problems. imo, A clean straight through vent on an axle is better then a clogged factory vent.
It is suppose to be a vent, not a straight hole, so it has baffles to help prevent water from coming into the axle (air pressure) and grease from leaving with the air when it gets extremely hot.
That being said, when mine have been gunked up, especially the front axle, I have drilled them out (1/4"?) since I run my vent lines up into the frame or body and put a few loops or curves in them.
You can buy them new at NAPA too!
In short, if it is clogged and can't be cleaned, drill it out, and don't worry about it. I never did and had no problems. imo, A clean straight through vent on an axle is better then a clogged factory vent.
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arctic_driver
1999 - 2016 Super Duty
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Mar 22, 2015 04:38 PM
