Econoline E350 1 Ton V8-5.4L SOHC VIN L (1999)
6. Install the nut over the top and base stud.
7. Use the Feeler Gauge and select the thickest blade that will enter between the tool and the differential clutch pack. Subtract 0.010 inch from the
feeler gauge reading. This will be the thickness of the new clutch shim. Select the correct shim size, and remove the Traction-Lok(R) Clutch
Gauge.
8. Place the shim and Belleville spring on the differential clutch pack.
^
The dished or concave side of the Belleville spring must face up and against the thrust face of the differential case.