zj rear diff breather please HHEELLPPP!!!!!! - JeepForum.com

 
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post #1 of 9 Old 04-13-2011, 04:59 PM Thread Starter
zj98ny
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zj rear diff breather please HHEELLPPP!!!!!!

hey guys sorry if im in the wrong section but i am having a major problem my 98zj had mud in the rear diff i had to do whole new bearings in the rear and my mechanic said my breather sucked in all the mud i also have noticed oil leaking out of the junction box and noticed the breather is ziptied into the junction box whole and i took it out and there is a straight hole going all the way through the junction box is there supposto be a hole all the way through? please help there is also no threads on the breather plug but inside the box there does not look like anything is supposto be screwed in anyways please help!!!!!

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post #2 of 9 Old 04-13-2011, 06:21 PM
TallyZJ
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Originally Posted by zj98ny View Post
hey guys sorry if im in the wrong section but i am having a major problem my 98zj had mud in the rear diff i had to do whole new bearings in the rear and my mechanic said my breather sucked in all the mud i also have noticed oil leaking out of the junction box and noticed the breather is ziptied into the junction box whole and i took it out and there is a straight hole going all the way through the junction box is there supposto be a hole all the way through? please help there is also no threads on the breather plug but inside the box there does not look like anything is supposed to be screwed in anyways please help!!!!!
The junction box you speak of is called a "T" block. It is the union of the rear brake hose to the rear brake hard lines and also acts as the vent for the rear axle. The bolt that goes through the center of this block to the axle tube is the axle vent itself.

There should be a rubber hose or a breather cap on top of the "T" block bolt (which is hollow). If the cap or hose is missing then that is why you took on water. It is also possible the bolt is broken off flush with the axle tube which means it would have to be removed and a new bolt installed.


The zip tie you mentioned tells me that the "T" block bolt is either broken off or is missing entirely.

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post #3 of 9 Old 04-13-2011, 11:21 PM Thread Starter
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hey thanks yah it slides right in and goes all the way through the bolt has no threads on it anymore and easily goes in and out the hole on the t block. It also goes completely all the way through is this normal. I could put my pinky finger through it and it would pop out the top im going to take pictures tomorrow and post them up .. thanks for the help!

4x4? use it ! -- 4x4 is not ment to get the groceries
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post #4 of 9 Old 04-14-2011, 08:20 AM Thread Starter
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.....

4x4? use it ! -- 4x4 is not ment to get the groceries
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post #5 of 9 Old 04-14-2011, 08:21 AM Thread Starter
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4x4? use it ! -- 4x4 is not ment to get the groceries
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post #6 of 9 Old 04-14-2011, 08:23 AM Thread Starter
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http://s795.photobucket.com/albums/y...t=breather.jpg




HERE is the pic

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post #7 of 9 Old 04-14-2011, 08:35 AM
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there should be a hole in the top of your axle that the bolt threads to it no threads on that block



is that duct tape holding your break line
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post #8 of 9 Old 04-14-2011, 02:35 PM Thread Starter
zj98ny
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omg thanks lol i didnt even see that hole every thing ive been looking up says it goes in the square thx so much .. and no thats the breather i took the duct taape off but there was nothng underneathe idk i bought it that way


thanks for the help

4x4? use it ! -- 4x4 is not ment to get the groceries
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post #9 of 9 Old 04-14-2011, 06:00 PM
TallyZJ
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Originally Posted by zj98ny View Post
omg thanks lol i didnt even see that hole every thing ive been looking up says it goes in the square thx so much .. and no thats the breather i took the duct taape off but there was nothng underneathe idk i bought it that way


thanks for the help
The breather vent bolt does go through the square t-block and then into the hole in the top of the axle tube. Its what holds the t-block down to the axle.

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