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-   -   xxxt diff settings (http://www.oople.com/forums/showthread.php?t=5166)

Big Daddy Cool 25-08-2007 02:40 PM
xxxt diff settings
 
Hi. I'm new to off road but have run on-road for 10 years. I got a used xxxt and have rebuilt it. Can anyone give me tips on how tight the diff setting should be? Should I set it like TC? Or should I allow some slippage? Thanks.

_sleigh_ 25-08-2007 02:54 PM
I've not personally run a truck before, but I'd recommend having a very small amount of slip. Mainly down to the amount if torque going through the transmission from the big truck tyres.

I'd happily be put right if there's any truck drivers out there.

ashleyb4 25-08-2007 02:57 PM
This is what it says in the manual....

Quote:
About The Differential Never allow the diff to slip; that’s what the slipper is for. Before trying to adjust your diff, you need to tighten the slipper until the spring is fully compressed. Next, hold the spur gear and right rear tire, then try turning the left rear tire forward or backwards. It should be very difficult to turn the left rear tire. If the tire turns easily, the diff is too loose. To tighten the diff, line up the slot in the diff screw with the groove in the left outdrive. Place the 1/16” Allen wrench through both of these slots. This will lock the diff screw and the outdrive together. While holding the Allen wrench in place, turn the right rear tire forward about 1/8 of a turn. Check the differential adjustment again and repeat the tightening process as necessary until the differential is no longer slipping. See "Adjusting the Slipper" on the following page, and then continue from here. The final differential adjustment check should be made by placing the car on carpet, grass, or asphalt and punching the throttle. The differential should not slip (slipping produces a "barking" sound). If it does, tighten the diff in 1/8-turn increments as described above until the slippage stops. Once the diff has been adjusted, it should still operate freely and feel smooth. If the diff screw starts to get tight before the
diff is close to being adjusted properly, the diff should be disassembled and inspected; you may have a problem with the differential assembly. Refer to the assembly instructions to ensure that the diff is properly assembled and that all parts are properly seated in the assembly.
There are a few things you should know about differentials. First, when rebuilding your diff, you should always replace the small, diff nut. Second, after the diff has been run a time or two, it is not uncommon for the balls to seat into the rings and create a slightly loose adjustment. So, after your first and second runs, check the adjustment to avoid slippage. Third, remember: Never let the diff slip. Doing so can damage the diff balls, rings, and gear. Always make sure that the slipper will slip before the diff.
personally i aint got a clue just looked at the manual.

A

Mr X 25-08-2007 04:12 PM
the basic ruleforoffroad is you tighten the diff so it is as free as possible withot slip. slipping will kill your diff because its bumpy and the power applied is choppy.

_sleigh_ 25-08-2007 04:26 PM
Yeah.. when I said a little bit of slip I'm talking about the smallest of small amounts. With the spur and one wheel held, and the other wheel being turned with loadsa force...

In my defense it's like 30deg here at Stotfold and I'm sitting in the sun... perhaps the sun has fried my brain.

Big Daddy Cool 27-08-2007 03:47 PM
Thanks a lot for the tips. Its not too different from TC then. The step I missed was to tighten the slipper first then set diff tightness, and then reset slipper setting.

froggie 01-09-2007 01:27 PM
Never allow the diff to slip always the slipper.And make shure you recheck the diff after cuople of runs will loosen up some.


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