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Discussion Starter · #1 ·
I am posting this for a friend who just bought a 79 CJ-7 with the quadratrack. the guy he bought it from disconnected the vacuum lines to the emergency handle. Can anyone give me a diagram so I can help him hook it back up. His Jeep spec's are 304, Dana 30 front and AMC 20 rear, 400 Auto tranny.

/wwwthreads_images/icons/cool.gif /wwwthreads_images/icons/cool.gif </font color=yellow> Just had to try this since I read how to do it.

Thanks,
Blk83CJ7 becoming known as Hollywood around town
 

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/wwwthreads_images/icons/tongue.gif Well......that there is one fine Jeep. I say that because it's E-Zackly the same as our Jeep, and we think our Jeep is, well......just the finest that could ever be. Your gonna have to do a little detective work, but I'll line you out on the system so you'll be OK. First, there is usually one short hose and two long hoses which go to the valve. The short hose connects to an intake manifold vacuum source, and the long ones go to the vacuum pot on the transfer case. If the hoses seem the same size, you can still trace them by experimenting. See which hose will connect to each of the other two when the valve is switched from Normal to Emergency. Once you have the center hose figured out, see which of the other two is "hot" when the valve is on "E". THAT HOSE goes to the front side of the vacuum pot....the side closest to the engine. That IS emergency drive. The other hose goes to the back port on the vacuum pot. You know that "E" is just normal, locked-up FWD....like a regular Jeep....you do know that don't you? And "N" is FWD for supermarket paved parking lots. And to go from one to the other, you cut some figure eights. AND MATCH THOSE TIRES!!!!!/wwwthreads_images/icons/frown.gif/wwwthreads_images/icons/mad.gif

CJDave
Quadra-Trac modified by the crack moonguy/wwwthreads_images/icons/wink.gif/wwwthreads_images/icons/smile.gif/wwwthreads_images/icons/tongue.gif transfer case team.
 
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Discussion Starter · #3 ·
/wwwthreads_images/icons/cool.gif Cool, thank's CJDave I new you would know after reading all your post on the Snow Jeep/wwwthreads_images/icons/smile.gif. I figured that was what the E and N ment. I have only had the Dana 300 and 20 in my Jeeps and do not know much about the Qudratrack.

Now to see if I can get color.

Thanks again and I will let you know if we get it working.
Blk83CJ7
 

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/wwwthreads_images/icons/tongue.gif The QT is absurdly simple....a big sprocket on the tailshaft of the TH 400......a big chain that goes down and to the right.....a BARREL DIFFERENTIAL with a sprocket on the outside of the barrel....two shafts sticking out of the differential, just like in an axle, except in this case one points forward and one aft. Those are the outputs to the axles. When you flip to "E", a sliding collar locks the differential and it becomes regular FWD. There are some cone clutches inside the differential which make it try to lock up and not slip so you won't spin one wheel taking off on gravel. The reality is that the clutches just cause unnecessary binding, which is why we disabled them in the SNOJEEP and run F-R-E-E till we flip the valve to "E"./wwwthreads_images/icons/crazy.gif

CJDave
Quadra-Trac modified by the crack moonguy/wwwthreads_images/icons/wink.gif/wwwthreads_images/icons/smile.gif/wwwthreads_images/icons/tongue.gif transfer case team.
 
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