4low binding

[Luke K]

Yes thanks Rang0 that's true.

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[Clarky]

Do you have a diff oil with limited slip additive in it?

[Luke K]

I'm thinking I might need to get the diff oils done with the friction additive stuff in it as I don't know whats in there since I bought it

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[Luke K]

Originally Posted by Luke K

I have a problem with my jeep commander in low range. When I u turn or turn sharp when it's in 4low the wheels bind and seem to work against each other? Any one know why this may be? Thanks

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Wheels chirp and there is quite a bit of noise when this happens

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[07commander]

it would be because when you place it in 4lo it engages the diff locks, which means the wheel can't spin indepently if doing this on road its a great way to destroy your diffs or transfer case.

[SeaComms]

Also because in low range the transfer case is locked up so front and rear axles are trying to turn at the same speed. With or without diff locks the transfer case, drive shafts or diffs will go BANG if you keep engaging low range on the road!

[JamesLaugesen]

Originally Posted by 07commander

it would be because when you place it in 4lo it engages the diff locks, which means the wheel can't spin indepently if doing this on road its a great way to destroy your diffs or transfer case.

The front and rear diffs don't lock when you shift into 4lo. Only the centre diff in the transfer case locks. The front and rear diffs only "lock" when wheel-spin is detected. Turning sharply on a hard surface wont typically have enough differential to fool the computer into thinking a wheel is slipping.

Even when the front or rear diffs are engaged, you're not going to damage them by just turning with some traction (hard to avoid when a track could be a mix of mud and large sandstone slabs.), since they're engaged via a clutch-pack not a mechanical lock (slip-ring, etc.). The clutch will slip first (assuming you're doing everything smoothly and easy on the throttle, bouncing up rocks with the pedal to the floor will always break something .).

Originally Posted by SeaComms

Also because in low range the transfer case is locked up so front and rear axles are trying to turn at the same speed. With or without diff locks the transfer case, drive shafts or diffs will go BANG if you keep engaging low range on the road!

Totally, the binding the Luke is experiencing is just from the centre diff being locked, same as any part-time 4wd with no centre diff, or with a locked centre diff.

Some full-time 4wds can shift into 4lo without locking the centre diff, handy for parking a boat or trailer on a steep driveway. One of the few things I miss about by Lada Niva



As awkward as it is, using 4hi occasionally isn't too bad. That's what the torque converter is for... just keep an eye on the trans oil temp.

Oh also friction modifiers in the diff oil wont make much difference, as the clutch packs have pretty-much zero preload when the diff solenoids aren't engaged. The binding with incorrect friction modifiers is an issue with quadra-drive 1 (no solenoid to control the preload.).
The friction modifier is just to reduce wear on the clutch plates (with the inevitable slipping that happens when they are engaged.).