O-Rings, Gaskets, Seals

Always replace O-rings, gaskets and sealing rings.
After removing gaskets and seals, always inspect the contact surfaces at housing or shaft for burrs resulting from removal or for other signs of damage.
Thoroughly clean housing joint surfaces before assembling and apply sealing compound AMV 188 200 03.
Before installing, fill gap between sealing lips of radial-shaft seals half way with sealing grease 052 128 A1.
The open side of the seals face toward the fluid to be sealed in.
For installation, lightly coat outer circumference and sealing lip with ATF or transmission oil, depending on the installation location.
Lightly lubricate O-rings before installing, this prevents the rings from being pinched when inserting.
Use only ATF in areas near ATF. Other lubricating substances cause functional problems in the hydraulic transmission control.
When pressing in new seals, make sure the sealing lip does not run on the same point as the sealing lip of the old seal (use insertion depth tolerances).
After installing, check and if necessary correct fluid levels in the affected area. ATF in planetary gear, Gear oil in front final drive, Transmission oil in center differential, Transmission oil in rear final drive, and Capacities and specifications. See SERVICING - A/T (01V - WITH 1.8L, 2.7L & 2.8L article.