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Unread 05-07-2001, 04:02 PM   #1
mike byrd
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Join Date: May 2001
Location: Wappingers Falls, NY
Posts: 7
Command Trac Problem

The vacume motor on my front axle works. I replaced the vacume switch on the transfer case. The vacume hoses (plastic were tore up and modified) have been replaced. I guess I hooked 'em up wrong. Where do the hoses hook to the switch????? I can't find a schematic ANYWHERE!!!!!!!

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'90 YJ, 4.2 liter, 4"Pro Comp Lift, lookin for other goodies.
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Unread 05-07-2001, 11:16 PM   #2
jpwranglr9
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Join Date: May 2001
Location: Kalamazoo, MI
Posts: 98
i took out my disconects but if i rember right, the hoses that goes to the trasnfer case only goes in one way. then the other end just goes the the vacume disconect on the axle. run the motor so that there is vacume in one of the 2 hoses to the axle. make sure u are in 2 wheel drive. then conect the side with the vacume to the pas side inlet and the one without to the driver side. you are shifting the sleeve to the left (driver side) when in 4x4. then pull the shifter into 4 wheel and see if your ingagement light turns on. hope that helps
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1995 YJ ,SOA with 4" procomp front 3.5" BDS rear 1" shackle rear, custom stearing, 35x12.50x15 pro-comp MTs, warn xd9000i, on-board air from A/C, dana 44 rear and 30 front with 4.56, powertrax no-spin rear, custom disks rear/trutrac front, warn front shafts, HD SYE kit, HD front and rear driveshafts, Warn 4X flairs, PIAA 520 ligts and on and on and on :)
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Unread 05-29-2001, 05:18 PM   #3
jeepster
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2000 TJ Wrangler 
 
Join Date: Aug 2007
Posts: 24
I also replaced the hoses on my 89YJ. I tried to replace each hose individually with no luck. Purchased a replacement hose kit from the dealer and all works well. As stated by jpwranglr9, with the replacement kit it only attaches one way.
Tip.
Put the plastic lines inside a rubber hose. The plastic hose can be distroyed by battery acid that can leak out when you are off roading.
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