Andy's covered this pretty well but I thought I'd chime in with a couple of
things...
1. If you have the part-time 4wd system (NV 231 T-Case) do not operate it on
dry pavement or, more precisely, do not operate it in high traction conditions.
It will cause the driveline to bind and lead to nasty problems.
2. You still need to put her in reverse every now and again to disengage the
system. I'm not positive but I think it's caused by minimal driveline binding
and is not a problem.
3. 4-Lo is for crawling up and over things. I don't think I've ever gone over
5 mph in 4-Lo. To engage it you must be at a full stop, the transmission should
be in neutral, and do not pause when you shift down into 4-Lo.
Other than that, have a blast! 4-wheeling is truly the balls!
Tom
____________________Reply Separator____________________
Subject: Re: DML: How to drive a 4X4
Author: <dakota-truck@BUFFNET.NET>
Date: 1/15/2002 6:00 AM
Puddlestompa@aol.com wrote:
> I just got a new truck recently 2000 4.7L 4x4 auto, and have a few
> questions as I did not get a manual.
> Do you have to (or is it a good idea to) roll back when you disengage the
> 4x4 system like old trucks?
Sometimes. I've never had to do it but sometimes the 4WD may "catch" and
not release back to 2WD for a couple minutes. Supposedly rolling backwards
will unlock it right away.
> Are you not supposed to go over a certain speed when you are in 4 wheel
> drive, if so does it differ for 4lo and 4hi?
IMO, if you need 4WD, you shouldn't be going fast in the first place. You
can shift into 4HI at up to 55 MPH, but you shouldn't be doing 55 if you
need 4WD.
4LO I think you're limited to 25 MPH. With the 2.72:1 ratio in low-range,
the 2000 RPMs that I turn at 70 MPH in 2WD/4HI would be 5440 RPM in 4LO.
> Being Shift on the Fly, what speed so I be going and do I have to be
> moving?
You can go to 4HI stopped if you're in Neutral. For 4LO, procedure is in
the FAQ under Transmission & Gears.
If you can give me a couple days, I can scan the 4WD portions of the manual
for you if you like. Drop me an email direct (off-list).
-- -andy andylevy@yahoo.com Maintainer, DML FAQ - http://www.dakota-truck.net/faq/ http://home.twcny.rr.com/andylevy/dakota/ '99 CC 4x4 318 auto
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