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Thanks 351!
So there really is no "Precision Expertise" with the Spartan locker huh? Here it comes- Once it is installed it wont do any real damage right? I read about the clicking in tight corners but having 2 wheels driving in the rear in mud and snow will be so worth it! Now is it always locked or is it only locked when the main wheel spins? Thanks again!
By design it is always locked, except when going around a corner when it can "over run" itself and differentiate. The clicking won't be noticeable unless you have a truck that is otherwise silent. A loud muffler will drown out the clicking. Running heavy gear oil will cushion it as well.
351ClevlandC4, you say NO special tools are required for set up? That's what has scared me away from doing it myself. All the dial gauges and pinion depth.
Do you have a link for what you installed or was that what you posted?
If you pull the carrier on a 9", you need at least to check backlash when putting it back together(check it before taking it out and then put it back to that number when putting it back together). Then there is also bearing preload on the carrier. Not exactly a "no special tools" kinda job. Not difficult, but you still have to set it up. Granted you don't have to worry about pinion depth, but everything else needs checked.
Only on like an 8.8 can you change parts and not worry about setting it back up. You pull the side shims out(after removing main caps), remove carrier and then slip it back together. Everything is already set up with the shims you took out. I've swapped open to LS in a few hours on an 8.8.
Nope. A 9" is about the simplest designed diff ever made. Backlash is set by adjusting nuts on the side of the bearings. Screw one out and the other in to move the ring gear left or right.
How do you get to the side gears without removing the carrier?
Backlash is set using the side bearings. Moving the carrier one way or the other moves the teeth closer/apart, thus setting the backlash. The "slop" in basic terms. There are spanner nuts on each end that allow you to move the carrier. How tight the bearings is the preload on the side bearings. When working on a used gearset, you measure it and then return it to that setting when putting it back together.
See the spanner nuts with the lock tabs that keep it from turning after you set it:
With some basic knowledge it isn't really that difficult.
The side gears are removed through the openings in the side of the carrier, and the locker unit replaces them. The cross pin is removed and the gears are "walked" out.
The side gears are removed through the openings in the side of the carrier, and the locker unit replaces them. The cross pin is removed and the gears are "walked" out.
I think you meant the "spider" gears are removed...correct?
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