Torque down the SST assembly on the end of the housing until the proper preload is achieved at the end of the arm.

Measure the height of the torqued assembly to get the first part of the shim thickness - calculation "A"

Scribe a centering line on the shaft with the part that fits into the end of the axle housing.

Measure height of knuckle to determine second shim measurement - Calculation "B"

Attach spindle to knuckle to determine centerline of knuckle - measure the distance between the two scribed lines to get "D".

Calculations

Total shim thickness "C": C = A - B 

Lower shim thickness "E": E = D - 3mm (1 inch = 25.4mm)

Top shim thickness  "F": F = C - E