Thread: ball diff help
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Old 2006.04.14, 11:16 PM   #4
EMU
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Bearings:
4x 2x6x2mm (Front wheels)
3x 3x6x2mm (Rear axle, 1 on outside of right rear wheel)

Diff:
The O ring is there as an extra. You do not install it unless you need to change the old 0 ring.

When you install the diff, you want about .5mm of play on the axle where it goes through the motormount (this will prevent a pinch).

Insert the diff through the motormount (with both bearings in place), put axle end wheel adaptor on the end of the the axle (with the grub screw loose), tighten the grub screw down onto the flat part of the shaft just enough for it to hold it in place, but still have a little movement. If you have a thin flathead screwdriver, place that between the wheel adaptor and the motormount and push the wheel adaptor towards the motormount while holding the other end of the diff against the motormount and tighten the grub screw on the wheel adaptor fairly tight. Try not to overtighten, as this will tend to misallign the wheel on the shaft (it may tilt). then put the left wheel on (using 2 bushing, one 3x6x2mm on the inside of the wheel and one 2x6x2mm on the outside of the wheel). screw on wheelnut until there is no wobble on the wheel.

If you overtighten the rear right wheel, the diff will not work properly, it will be too tight. You want the wheels on tight enough so there is no wobble, no tighter.
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