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Randy R 11-28-2004 05:19:31 161.19.64.5 11794 Report to Moderator	Folks: The other day I found a flexible rubber or neoprene hose with a plug in the end hanging down from the brake line junction box on the left side of the rear axle on my '90 Bronco. I tied it up out of the way. It looks like a clip used to be holding it up but rusted away. What is the purpose of the hose? Thanks. [Reply]  [No Email]
Redmud 11-28-2004 06:29:43 216.167.146.94 11795 Report to Moderator	Re: Old Bronco in reply to Randy R, 11-28-2004 05:19:31   Randy, It's a vent hose for your rear axle, you should be able to see where it was attached to the frame or body above the axle. It needs to be re-attached in the same place to keep water out of the axle. Redmud:   [Reply]  [No Email]
Randy R 11-28-2004 07:24:11 161.19.64.5 11796 Report to Moderator	Re: Re: Old Bronco in reply to Redmud, 11-28-2004 06:29:43   Thanks, but why is it attached to the junction fitting where the brake line coming to the back splits into 2 (left and right sides) and has a plug in the end?   [Reply]  [No Email]
Bob 11-28-2004 09:02:35 66.163.134.177 11799 Report to Moderator	Re: Re: Re: Old Bronco in reply to Randy R, 11-28-2004 07:24:11   The bolt that retains the junction block for the brake lines is hollow, and since the end of the hollow bolt passes into the interior of the axle, this provides a vent port for the axle.   [Reply]  [No Email]
Redmud 11-28-2004 08:23:20 216.167.146.174 11797 Report to Moderator	Re: Re: Re: Old Bronco in reply to Randy R, 11-28-2004 07:24:11   Randy, We may not be talking about the same thing here. there should bo 2 hoses on the rear drive axle, Brake hose and vent hose. All rear drive axles have a vent hose as well as front axles on 4x4's. Also a rubber brake hose on the rear, that attaches to the junction block where the lines split off to each wheel.{could it be that the brake hose has been plugged for some reason??} Do you have both hoses on the rear axle? vent and brake hose. Redmud:   [Reply]  [No Email]
Randy R 11-28-2004 11:34:50 161.19.64.5 11802 Report to Moderator	Re: Re: Re: Re: Old Bronco in reply to Redmud, 11-28-2004 08:23:20   I'm going to have to get under there and have another look for the axle vent, if this isn't it. But it sure can't be an effective vent with a plug in the end. Also, it's attached on the back side of the block, not on top.   [Reply]  [No Email]
Redmud 11-28-2004 12:51:57 216.167.146.197 11804 Report to Moderator	Re: Re: Re: Re: Re: Old Bronco in reply to Randy R, 11-28-2004 11:34:50   Randy, If your Bronco is 4x4, look at the front 3rd member, it will have the same vent hose with the plug. which is not really a plug, but a vent cap, and most vent caps are made of plastic. and donot remove the plug,cap,and drive the rig without it. that cap keeps out dirt and water. Redmud:   [Reply]  [No Email]
Pollack Pete 11-28-2004 12:23:23 66.155.248.86 11803 Report to Moderator	Re: Re: Re: Re: Re: Old Bronco in reply to Randy R, 11-28-2004 11:34:50   Maybe what you think is a plug is really a little check valve.I've seen these stuck in the vent hoses.Lets the housing breathe without sucking in all the bottom-side crud or water.If this is what your Bronco has,clean the valve real good,take the hose off and blow it out and reinstall everything.Had this plug up on a ' 93 F-250.Kept seeping gear lube out the axle seals.Not a fun job.   [Reply]  [No Email]
Randy R 11-28-2004 15:17:22 161.19.64.5 11805 Report to Moderator	Re: Re: Re: Re: Re: Re: Old Bronco in reply to Pollack Pete, 11-28-2004 12:23:23   OK thanks everyone. I'll fix it up.   [Reply]  [No Email]