2WD Low Range
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Elder User
Joined: Sep 2004
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From: N. Georgia
2WD Low Range
Sometimes I need to have the low range on my truck work in 2wd. With this I can push a trailer up a grade, around a corner, while on pavement. I can unplug the vaccum pump and this will work, but you can still hear the hubs move (but not fully engage) when you throw the switch. I thought I read once how to do this with a switch in an electrical wire, but haven't been able to find it on any searches.
Thanks, Joe
Thanks, Joe
Elder User
Joined: Oct 2004
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I know you can get vacuum switches, maybe you can install one in the line to the front axle? You can probably get one from a big truck store, or maybe here?
http://www.herga.com/pressure/products/6753.htm
http://www.herga.com/pressure/products/6753.htm
Elder User
Joined: Feb 2000
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From: LAKE FORK TEXAS
It was my understanding that all you had to do was unplug the vac lines to the hubs, then plug the lines and plug the fitting coming off the hub and then you could have 2wd LOW RANGE, and if you wanted 4WD you would have to get out and lock the hubs manually.. I was contemplating doing this as I do a lot of backing sometimes too.
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Elder User
Joined: Sep 2004
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From: N. Georgia
Thank ya'll for your responses. The getting out and disconnecting and then reconnecting vaccumn lines is the part I don't want to do. I was hoping to install a switch inside to do this. If this goes in the wiring to the truck's vaccumn switch or to a new vaccumn bleeder valve of some type, really doesn't matter. Of coarse, it would be cheaper and easier to just switch an existing wire.
Thanks, Joe
Thanks, Joe
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Elder User
Joined: Sep 2004
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From: N. Georgia
Okay, this is what Iv'e done. I cut the wire (light blue with a pink tracer) at the vaccumn solenoid (the one with just 2 vaccumn lines on it) which is located on the passenger side fender well. Ran two 18 gauge wires from the soleniod to a switch mounted next to the 4wd switch on the dash. Turn the switch off, shift into 4wd high, then into 4wd low and what you've got is 2wd low. It works great but I can still hear the hubs move, but they don't engage.
Joe
Joe
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