Thread: D1 V8i Transfer case gurus, need your smarts

oops

nah, that makes sense. can't even understand why it would have independantly spun the rear wheels though on the dyno...

Thinking about it now though, if the centre diff was screwed, it wouldn't be open wheeling un-lock and driving in lock? Is it possible to tighten these diffs by accident like some LSD diffs?




Either way, here's me... thick head, probably needing a new transfer

And I was hoping to put a few bucks into lifting it.

Any ideas what I'm up for with repairs?

It's late and I'm talking to myself here, but I kind of wish I'd never stuck it on the dyno anyway. I was more morried about mixtures and only took it there to put the sniffer up the tailpipe. Somehow I ended up hearing the words "lets chuck it on the dyno" and next thing I knew.

You might want to go back to the drawing board for a bit - the TC on your Disco should be the LT230 which has permanent 4wd thru a centre internal open style diff than can be locked by pushing the lever to the left. Provided the lever is on the left side, this is the same when you enter low range by pushing the lever forward.

(Sorry about the kindergarten lesson, but I figure you might have a malfunctioning diff lock light)

Whilst there might be some drag, you should have been able to at least idle on the 2wd dyno with the CDL off. Sometimes the CDL jams, and even though the lever is on the RHS, the CDL is still engaged. Getting underneath with a screwdriver or vice grips can ensure the CDL is in the off position.

If the centre diff was RS, you would not have any drive at all. I'd suspect your selector fork is slightly jammed or the lever pviot is loose (It has a plastic bush that wears and falls out).

The LT230 is pretty hardy - it's your tyres that wear if the CDL is on, and it only goes bang if you go around sharp corners on hard surfaces.

the VC'less CDL can do some funny things if its been let run low or spun too hard too often, the fretting will grab at shafts like a sprag clutch and you wind up with a semi permananly locked CDL....


Occasionally lifting and spinnin a wheel by hand in reverse with the CDL known to be off and the boxes in nuetral will get it free but it usually doesnt last long before it goes pear shaped again.....

I have to admit Ive never seen it in an lt230 before.

Yeah, I'm 100% sure it all felt weird because it basically wound itself up like a rubber band on the dyno. Lucky it was only for a few seconds, but either way, enough to make it unhappy.

I'm gonna check a few things over the weekend, but I'm pretty sure I'll be coughing up $1500 next week (that I'm sooooo stoked about spending) for a new transfer case.

Put basically... don't try this at home kids!

As Dave said, the TC is NOT supposed to be driven on a 2wd Dyno at more than 10Kmh, Any more and it has probably broken/ seized a side gear in the centre diff, effectively partially/ permanently locking it. Smack the Dyno operator, and tell him NEVER do this again.

At the very least, the case will need a complete strip down and inspect/ measure to cost up a rebuild. Centre diff bits I have plenty of, if you need some. A used case may require some work anyway, so beware.

JC

Not really the dyno operator's fault though. He offered, I accepted. He's a good mate and is smart enough to build IRS 8 second LS1 Commodores. Yet I'm a mechanic by trade and didn't think in the 12 months that I owned the car that is was constant 4WD.

I must had a few ml of Pajero blood in me from my old car that got stolen.

Maybe I should get a new prescription for my smart pills.