Thursday, Jun 29, 2006 at 16:10
Just picked up on something you said above about not being able to shift ito 4H on the fly with the hubs in "auto" position. I'm not sure what the brochure or handbook or even the blurb on the sun visor says...... but let me assure you there is NO WAY you could ever expect the drive train to allow you to shift into 4H (from 2H) on the move if the hubs are set at "auto" instead of "LOCK".
Think about it for a moment.......think about what is happening under your truck as you're driving along in 2H with hubs in "AUTO" mode. The front tail shaft is sitting there doing nothing at all; while the rear shaft is spinning at whatever speed you happen to be doing. Now, all of a sudden,
the nut behind the wheel decides to jerk (or gently co-erse as the case may be....it doesn't matter how you TRY to do it) the stubby lever back one notch into 4H. What you're asking the transfer case to do is to (in the blink of an eye or less and with no clutch-type transition available for the manourve), to get the front drive train from sitting perfectly idle, to INSTANTLY turning at the exact same speed as the rear tailshaft. Sorry, but it just ain't possible, end of story.
Now, if you have the front hubs in "LOCK" position; different story. The hubs being locked, means that the front tail shaft is spinning at the same speed as the rear tail shaft, even though the stubby lever is in 2H position. So, when you pull the stubby lever back into 4H, the transfer case is able to oblige with your request, as the internal gears are already spinning at the same speed and all you're doing is actually applying the DRIVE to the front shaft......up until that point, the front
wheels have been causing the front tail shaft to turn, courtesy of the locked hubs.
I hope that makes sense to you and that I haven't confused you. I remember thinking when I first bought my GU that this would be great (to be able to shift on the fly).....but it simply isn't possible unless the hubs are locked.
Cheers
Roachie
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