DESC410R/DEX410 Gearbox Pro-Build. | Team Durango Blog
http://www.team-durango.com/blog/2011/03/09/desc410rdex410-gearbox-pro-build/[11/10/2011 4:34:19 PM]
Tighten the gears in a cross pattern.
After the crown gear is attached – loosen the screws a little and
tighten cross-pattern again.
Shimming the differential correctly is an important
step and this is the next stage of building the perfect
gearbox. The DESC410R/DEX410 come with two types
of shim for this purpose, a 0.2mm which is silver in
colour and a 0.1mm copper-coloured shim.Firstly you
need to know how many shims will get the diff sitting
correctly so press down the bearing on the moulded
diff-body side so it’s fully in place as we’ll use the
crown gear side of the diff to play with shim settings –
this is purely because it’s much easier to remove /
replace the bearings on this side whilst we find the
perfect setting.
Start with one 0.2mm silver shim on the crown gear side and slide the bearing over the top. Place the diff
with shims and bearings installed into the empty differential case and clamp the case tight between your
fingers. Next you need to clamp the outdrives with your other hand, squeezing them inward whilst trying
to ‘rock’ the diff side to side in the case.
One silver shim in position.
Test the end-float in the case by trying to shift the diff sideways.
If you can feel a slight movement then you can maybe add a 0.1mm copper coloured shim to the same
side, next to the previously installed shim and try again. If on the other hand your diff is hard to install
or feels to be binding then you can remove / add to find your perfect balance. The shimming in this
guide is for the parts we used – your shimming could be different so be aware.
One silver shim wasn’t enough in this case, so I’ve added a
second copper shim.
Silver and copper shims together were the right setting – now it’s
time to position them.
Once you’ve found the
setting that feels right
you need to test against
the input pinion gear –
this will define where
