Calgary Jeep Association

4x4 Related Groups => Tech Talk => Topic started by: Rochambo on June 26, 2005, 04:49:51 PM

Title: 4x4 working or not?????
Post by: Rochambo on June 26, 2005, 04:49:51 PM

I have a 89 yj and im just not to sure if my 4x4 is working, i have been out on the trails but am just a little unsure. When i have got stuck the only tire that ends up spinning is one of the back ones. Is there a whay to check? How does it ingage? Airline? or what, any imput would be great

Cheers

Title: 4x4 working or not?????
Post by: Milan on June 26, 2005, 07:26:32 PM

Maybe your vacuum disconnect stays disconnected. At least 1 front tire should turn if you have all the driveshafts and axleshafts.

Title: 4x4 working or not?????
Post by: RedYJ on June 26, 2005, 07:28:38 PM

Does the Vaccume not defalt to locked hubs?  I could be wrong though.

Title: 4x4 working or not?????
Post by: pugnarlow on June 27, 2005, 02:08:54 AM

There are four vacuum lines that come out of the t-case, three go to the actuator on the front axle and one goes to a switch on the firewall. I had to put my YJ on 4 axle stands to test the 4wd when I suspected it stopped working.

Title: 4x4 working or not?????
Post by: Wif on June 27, 2005, 03:22:17 PM

sounds like it ain't working .. check the vacuum lines for breaks or cracks
vacuum actuator defaults to off

Title: 4x4 working or not?????
Post by: Becker on June 28, 2005, 09:10:07 AM

I have a similar problem, the shift motor slides the collar over to engage the front end, but when i put the foot into it it seems to disengage.  I have replaced the shift motor, and thought i was pretty thorough on the vacuum lines, but will be tearing them out once again to test for leaks.  

Somewhere in there is a vacuum leak, just gotta take the time to find out where it is.

Title: 4x4 working or not?????
Post by: Rochambo on July 01, 2005, 06:46:00 PM

Thanks, I went through all the line and sure enough one was out, pushed her in and then presto she worked