Is this a Vacuum knob for a locker? - JeepForum.com
 
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post #1 of 4 Old 06-22-2012, 09:00 AM Thread Starter
simspace
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1994 YJ Wrangler 
 
Join Date: Dec 2011
Location: Franklin
Posts: 42
Is this a Vacuum knob for a locker?

I picked up my first Jeep which need work.

Can anyone tell me if this is this a vacuum knob for a locker and how does it work?

Thanks,
Chris

image-1818878046.jpg


Chris S.
---------
'94 YJ
'94 XJ
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post #2 of 4 Old 06-22-2012, 09:08 AM Thread Starter
simspace
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1994 YJ Wrangler 
 
Join Date: Dec 2011
Location: Franklin
Posts: 42
I ask this because something is still engaging the front axle. I need to replace the two front U-Joints because they are clanking when I drive. My 4 wheel drive is not engaged so I assume the hubs should not be turning but they are. And this knob seems to have something to do with that. When I turn it all the way counter- clockwise the u-joint clanking seems to stop. But then I have some other awful noise when I turn the steering sharp right.

Chris S.
---------
'94 YJ
'94 XJ
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post #3 of 4 Old 07-04-2012, 09:22 AM
tslroper
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1990 YJ Wrangler 
 
Join Date: Aug 2010
Location: New Mexico
Posts: 379
That *looks* like a posi-lok for your front axle. It replaces the vacuum actuated central axle disconnect. When you shift into 4wd you would need to pull out on that to lock the two piece passenger side front axle together. It does not function as a locker.

1990 YJ Islander, 4.2L MC2100 DUI HEI, 2.5" RE lift, 31x10.50 DuraTracs, HandenFab rear bumper / swing-out, Tough Terrain
off-road camp trailer.
Build thread: http://www.jeepforum.com/forum/f22/tys-yj-build-1502554/
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post #4 of 4 Old 07-04-2012, 09:29 AM Thread Starter
simspace
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1994 YJ Wrangler 
 
Join Date: Dec 2011
Location: Franklin
Posts: 42
Ahhh... Okay. Thank you. That helps!

Chris S.
---------
'94 YJ
'94 XJ
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