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  #1  
Old 12-26-2009, 12:40 PM
dad22153 dad22153 is offline
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Default Advice on replacing Vacuum Actuator

I've been working on trying to fix the 4WD engagement problem on my '99 Ram 1500. Here is what I posted previously:

"Good News,
Replaced the clogged steel vacuum line, new rubber elbows and rubber tubing, hooked everything up, and engaged the transfer case...
Hubs spin, and 4WD indicator light comes on.

Bad News,
It doesn't appear that the hubs are fully engaged. I can actually hold them by hand and they stop spinning. This can't be right. Do I need to consider replacing the vacuum actuator on the axle, or look for another problem?
If I do need to replace the actuator, it looks like I will loose rear end fluid when I remove it. How difficult is it to replace that? I can get one from my local auto parts dealer for around $80.
Any suggestions welcome."


I talked to an ASE certified mechanic friend, and he told me that the "spinning hub" issue should be OK. He suggested that I grab one side, and if the other speeds up, the axle should be engaged and working. Any input here to confirm that would be appreciated.

Also, I'm going to replace the front axle vacuum actuator, and was looking for any tips or suggestions on doing it. Is there anything in particular I should do, or be looking out for? Again, thanks in advance for any help or suggestions.
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  #2  
Old 12-26-2009, 04:08 PM
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He's right because you have an open differential in the front.
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Old 12-26-2009, 05:12 PM
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Sorry i cant help you out. Looks like someone else is getting close to be a posty HO to...........EH REM!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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Old 12-26-2009, 06:00 PM
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Quote:
Originally Posted by Remerson228 View Post
He's right because you have an open differential in the front.
Checked out the hubs tonight, and it looks like everything is working fine. I might hold off on installing the vacuum actuator for now. Thanks...
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Old 12-26-2009, 06:26 PM
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The best way to test it is to put it in 4WD and go play!
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Old 12-26-2009, 08:23 PM
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Yep!
That's exactly what I plan to do...
Got everything back together today, and double-checked the vacuum lines. All seems to be working good. I'll be taking her for a test-drive tomorrow to make sure everything is working as it should.
Thanks again for your help.
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Old 12-26-2009, 09:39 PM
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You can always put a posi or locker in the front and have real 4wd . (As long as you have a posi in the rear)
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Old 12-26-2009, 10:02 PM
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Quote:
Originally Posted by Toms Blue Ram 1500 View Post
You can always put a posi or locker in the front and have real 4wd . (As long as you have a posi in the rear)
That's part of my problem...
It looks like I have an open rear. When I put her on the snow the other day, I did notice that one rear wheel was spinning, and the other was not. So it appears I don't have a limited slip rear. It will be interesting to see how it plows snow with the current setup...
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Old 12-26-2009, 10:09 PM
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Might want to look into putting a locker in it . Don't think theres a Detroit Locker available for our trucks , but PowerTrax does . I have some friends that have had them and no problems . You can order it for a open case differential or a posi case . Not badly priced .
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Old 12-26-2009, 10:48 PM
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Quote:
Originally Posted by Toms Blue Ram 1500 View Post
Might want to look into putting a locker in it . Don't think theres a Detroit Locker available for our trucks , but PowerTrax does . I have some friends that have had them and no problems . You can order it for a open case differential or a posi case . Not badly priced .
Thanks for the suggestion. Do you have their website?
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