hmmmmmmm... I have the *full time* option and what Craig says jibes
with what it says on my visor (Part time for Loose/slippery surfaces
and Full Time for All road surfaces)... There's nothing in the
owner's manual about it and the service guys at my dealership didn't
even know it was an option on the Dak (it did create alot of interest
though... at least 5 service guys came out to check it out)! Go
figure... I get more useful info. here than from the folks in the biz.
To make this more confusing, would part-time or full-time be more
effective off-road? I purposely got my rear wheels slipping in some
mud, put it in "part-time" 4H and it wouldn't budge. When I slipped
it into "full-time" 4H it rolled right out.
T.
Boston, MA
*********
What is a committee? A group of the unwilling, picked from the unfit,
to do the unnecessary.
-- Richard Harkness, The New York Times 1960
>Date: Thu, 23 Apr 1998 09:09:05 -0400
From: Craig Baltzer <Craig.Baltzer@Anjura.COM>
Subject: RE: DML: RE: Using 4HI on pavement
This isn't quite right according to my understanding, and past
discussions here...
* The Dak's come with what is called "part time" 4 wheel drive on
other
vehicles. The "part time" indicates that you use it "part of the
time",
and is characterized by a center diff that mechanically locks the
front
and rear drivetrain together. Once engaged, one turn of the rear must
equal one turn of the front, which causes drive line bindup on dry
pavement where the wheels can't slip during cornering, etc. Should not
be used all the time.
* The "full time" 4 wheel drive (also known as "all wheel drive" on
Volvo, Mitsu, Porsche and Suburu (sp) among others) systems found on
other vehicles (option on the Dak, Blazer, Cherokee, etc.) typically
uses a viscous or other type of "slip permitting" center dif. This
directs torque as needed between the front and rear driveline, and is
not a "locked" type of dif, so its ok to use on pavement (typically
these systems do not give you a way to "disengage" 4 wheel drive).
Anyway, they are fine to use in 4 wheel drive mode all the time.
So, if it says "part time", use it "part of the time" when the roads
are
slippery or you're off road. If its says "full time" or "all wheel
drive", then use it all of the time. Clear as mud?
Craig
____________________________________________
Craig Baltzer - Anjura Technology Corp - Ottawa, Ontario
Craig.Baltzer@anjura.com - (613) 727-1411
_____________________________________________
> -----Original Message-----
> From: L. J. Morris [SMTP:ljohn@alltel.net]
> Sent: Thursday, April 23, 1998 6:51 AM
> To: dakota-truck@buffnet.net
> Subject: Re: DML: RE: Using 4HI on pavement
>
> Bobby;
>
> That system is similar to the *full-time* 4wd you can purchase as an
> option
> on the Durango. It essentially has a "differential" between the
front
> and
> rear drive assemblies, instead of a chain driven transfer case that
is
> not
> capable of slippage.
>
> L. John
> -----Original Message-----
> From: bob <lthpbsw@northstar.k12.ak.us>
> To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
> Date: Thursday, April 23, 1998 4:00 AM
> Subject: Re: DML: RE: Using 4HI on pavement
>
>
> >I agree with you totally. But I've been wondering why my mother's
98
> Grand
> >Cherokee 5.9 has Full time 4WD and nothing but that and 4Low. It
> isn't all
> >wheel drive, it's 4 wheel drive. How's that work? Just Curious.
> Adios...
> >
> (snip)
> >
> >*^*^*^*^*^*^*^
> >^Bobby Wilken*^*^*^
> >*Fairbanks, Alaska*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*
> >^'97 SLT+, 318ci, CC, 4x4, Flame Red, K&N, Gibson Duals,^
> >*Quite a sweet stereo w/ 6 disc and bass,^*^*^*^*^*^*^*^*
> >^and every single option there is...^*^*^*
> >*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*^*
> >
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