Express 3500 V8-6.0L VIN U (2004)
15. Lubricate the sun gear thrust washer with J 36850 or equivalent.
16. Install the sun gear thrust washer.
17. Install the rear sun gear.
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The shoulder side of the gear faces up.
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Do not rotate the planetary pinion gears
18. Temporarily install the rear output shaft to the planetary differential and the rear sun gear.
19. Rotate the rear output shaft three or four revolutions to rotate the planetary differential pinion gears. If properly aligned, the planetary pinion gears
will rotate freely, and there will be no binding.
20. Remove the rear output shaft without disturbing the rear sun gear.