|
4wd
On these years of cherokees the four wheel drive had a vaccum switch that operated the front drive axle. When the operator shifts the transfer case to 4WD, there is a vaccum switch on the t case that opens up and applies vaccum to a vaccum controlling motor on the front axle. There there it pulls a splined hub and engages the axle. This is done, so no hubs are needed to be locked in(like on a ford truck), but still gives the advantages on the hubs. To start one must make sure there is vaccum to the switch. Also, its a good idea to make sure the vaccum hoses aren't cracks. This can be done by locating the switch on top of t case and tracing the hoses back. If they need to order a hard part, it'll probably be either the vaccum motor, or the switch. The motor can be tested by removing it from the axle, and sucking on it and seeing if it moves. Why it worked for a few weeks I couldn't tell you, but some things are fluke. The switch I have never heard of one going bad, so I've never tested one.
B
|