Sienna LE V6-3.0L (1MZ-FE) (1998)
a. Using SST 09527-20011, 09612-24014 (09613-22011), remove the oil seal from the bushing.
NOTICE: Be careful not to damage the bushing.
b. Coat a new oil seal lip with power steering fluid.
c. Using SST 09950-60010 (09951-00240, 09951-00400, 09952-06010), press in the oil seal.
NOTICE: Make sure to install the oil seal facing the correct direction.
5. If necessary, replace teflon ring and O-ring.
a. Using a screwdriver, remove the teflon ring and O-ring from the steering rack.
NOTICE: Be careful not to damage the groove for the teflon ring.
b. Coat a new O-ring with power steering fluid and install it.
c. Expand a new teflon ring with your fingers.
NOTICE: Be careful not to overexpand the ring.
d. Coat the ring with power steering fluid.
e. Install the ring to the steering rack, and settle it down with your fingers.