NOTE: Prior to reassembling, clean all the parts in solvent, dry them, and apply MTF to all contact surfaces.

M/T Differential Thrust Clearance Adjustment (M/T)
Special Tools Required
Driver Handle, 40 mm I.D. 07746-0030100
Remove the left driveshaft side oil seal from the transmission housing.
If you remove the 80 mm shim (A) fro ...
Regulator Valve Body Disassembly, Inspection, and Reassembly (A/T)
Clean all parts thoroughly in solvent, and dry them with compressed air.
Blow out all passages except the air check valve filter.
Inspect the regulator valve body for scoring and ...
Installation
Hold the gearbox housing using a C-clamp (A) and wooden blocks (B) to a
workbench as shown. Do not clamp the cylinder part of the gearbox housing in
a vise.
...