I have the Haynes '82-'93 S-10/S-15, there is no "section" dedicated to
4x4. There is one on the transfer case, but it's a mere 5 pages. The factory
manuals are what you want if you want the best.
1. Factory Manuals
Thanks Steve I need all the help I can muster, I've never 4x4'ed before.
One thing I could use an answer about is what would be the most common
problem when I know the transfer case and the front pumpkin are engaging
but the front wheels aren't? I'm taking it in for a full tune-up and
having that problem fixed but I'd like to know for reference what to do
myself. Thanks, nubee
You'll have to ask a 4x4 guy that, I just stumbled into this place. I
usually don't know where I am.
But, if it's an answer you are looking for, without knowing the
year/make/model and without pulling up any manuals, I would say it has
something to do with the front hubs. Either they're manual and you didn't
lock them, they are electric and there is something wrong with the
electronics or the hubs are mechanically messed up.
But don't take my word for it.
It's unlikely that both the front diff (pumpkin...what's that? Must be
some sort of American expression) and the t/case are engaged, but
you don't have any drive to the front wheels. The S-series use
a vacuum motor to engage the front diff. You have a switch on
the t/case, vacuum source to the switch, vacuum line from the
switch to the vacuum motor located under the battery tray, and
then a vent line at the switch. Work your way back from the
the front diff vaccum motor and check your source and switch
points to determine where your problem is. Might be switch,
Pumpkin is Mid-Western American term for the Center Section of a Axle.
A "Pig" is slang for the ring & pinoin plus carrier. Both come from
fore and aft views. Old 60's and 70's trucks (1 ton dual rear wheels and
medium dutys) had a axle center section that resembled a pumpkin from
behind. Where as front removiable center sestions tend to resemble a
pig/hogs head when laying on a work bench from a distance.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.