Exploded V i e w with Key Numbers
Slide 2 Shims (63) onto each diff out drive next to the bearing. Install 2 bearings (1) into Bulkhead-B
(18), 1 inside and 1 outside. Slide the small pinion gear (13) into Bulkhead-B. Apply pressure to the
pinion gear and fix the front center universal (45) using the 5x4mm Set Screw (60). Apply thread locking
compound to the set screw. Apply a light coat of grease to the large Crown Gear on the diff, and install
the diff into Bulkhead-B. Fit Bulkhead-A using 2pcs 3.5x25mm RH/ST. Make sure the thin shims seat
properly and do not bend. Mark this gearbox as front. Repeat the process using the rear diff, the longer
universal rear driveshaft (91), and mark the gearbox as rear. Shims: The gear mesh should be tight
without binding. Test fitness of the diff with both shims on the gear-side of the diff and if the diff turns
freely without binding continue to next step. If the diff binds and does not turn freely (it will make a
grinding or crunching sound when spun), remove a shim from the gear side of the diff and reassemble.
If the crown gear does not make enough contact with the pinion gear (it will make a clicking sound), add
a shim to the gear side. Repeat until you are satisfied that you have the best gear mesh possible.
