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Jeep Cherokee Command-Trac

Q. Hello, Thanks for taking time to read this! Linkage mechanically engages the 4 wheel drive for my 1984 Jeep Cherokee, 2.5 liter, 4 cylinder, Command-Trac 4x4. However the front axle will not engage. It has P/S, A/C and a 5-speed manual transmission.

My Chilton manuals do not talk about the vacuum system that I now understand operate this system. Ideas on best troubleshooting procedure?

Thanks,
Greg

A. What you're going to have to do is track down the vacuum lines and see where the problem is. Here is a vacuum diagram of that system to assist you.

Command-Trac Vacuum Diagram

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