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Classic Car Service
Classic Car Service, Classic Car Mechanic
Category: Classic Car
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Vehicle is a 1978 Cherokee Chief with a 360cuin engine [that

Customer Question

vehicle is a 1978 Cherokee Chief with a 360cuin engine
[that is the same as a grand wagoneer]
There are 3 vacuum lines going to the drive shaft lockup mechanism
1 for normal/disengaged diaphram
1 for engaged/locked diaphram position
1 for what? it also has a T near the end on the line
what is this third line and T for?
Submitted: 3 months ago.
Category: Classic Car
Expert:  Classic Car Service replied 3 months ago.

Hello. Welcome to Just Answer. Please allow me to assist you. The third line is a vent line. You have a vacuum line, an engage line and a disengage line. That is all that is required to move the vacuum operated shift motor on the transfer case. The remaining line is a vent. It vents the lines to the atmosphere as they are in between modes (like when being switched vai the knob in the glove box. The ' T ' is missing another small line that was routed into the inner fender area where the vent terminates. You are missing that connection to the inner fender.

Expert:  Classic Car Service replied 3 months ago.

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