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shifting with lockable hubs

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1.7K views 4 replies 3 participants last post by  slipperywhenwet  
#1 ·
I'm a newbie to 4x4 and with the auto 4x4 broken on my X I'm switching to manual hubs.

What's the protocol for engaging the 4H and the 4L now with lockable hubs?
Park, lock the hubs, put in N, shift to 4H or 4L, shift transmission from N into D?
When disengaging do the same reversed?
Any backing up after being in 4L?
Ever a need to use the regular lower gears L2 or L3 while in 4WD?

When driving in snow (moving to Chicago from Atlanta) most of my driving I imagine will be in 4H. With manual hubs do I need to keep my speed below 55 mph until I can stop and manually unlock the hubs? A lot I expect will be highway driving when weather turns nasty.

Thanks,
 
#2 · (Edited)
Much more simplified then auto actually.
  • Park
  • Get out engage hubs
  • Return to drivers seat
  • Put in 4wd or 4wd low

Disengage
  • Put in 2wd
  • Get out unlock hubs
  • return to drivers seat

It is acceptable to leave the hubs engaged and place the transfer case back to 2wd drive for those days with changing road conditions. For example one road is plowed clear of all snow and the road you just turned on to isn't. With the hubs engaged the CV's and that will turn with the wheels. So it will kill your mileage and increase wear but no more then if you had 4wd engaged. The idea is that if your on a dry road you DO NOT want the lever in 4wd as it puts a binding load on the drive train. But, with the lever out of 4wd even with the hubs engaged it won't cause binding. By leaving the hubs engaged its really just a matter of shifting into 4wd when it is needed. Like say when the road surfaces your on are constantly changing. Obviously, for the summer or periods will you will not use 4wd its best to walk out and disengage for less drag, better fuel economy, and general wear.

No backing up or placing the transfer case in neutral is required. Just when taking it out of 4wd place the transfer case into 2wd to free the hubs of any stress before for disengaging. You probably won't need the L2, L3 gears in chicago. Mostly you use those in the mountains or extreme offroad situations where you don't want the trans to shift up. Or its also for engine braking on downhills so you don't over heat your brakes rolling down a long mountain slope.