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Message: [QUOTE="TyCorr, post: 329952, member: 1451"] Not if the line isnt hooked up. To the op, go to the vacuum pump, trace the line that goes to the cab. One goes downward and follows the crossmember down and goes to the hubs to actuate the 4wd. The other line goes into the cab. Start at the pump, work your way in towards the cab. If everything is still hooked up start checking the "vacuum motors". They are the vac. operators with rods that pull/push stuff open/shut. You can test these with a handvac such as the mityvac. If one doesnt hold the vacuum, its junk. That should get you started. [/QUOTE]

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