Remove the lower ball bearing inner race (with its oil seal)
[A] which is pressed onto the steering stem with a suitable
commercially available chisel [B].
Stem, Stem Bearing Installation
Replace the bearing outer races with new ones.
Drive them into the head pipe at the same time.
Special Tools - Head Pipe Outer Race Press Shaft [A]:
Bearing Driver Set: 57001-1129
Head Pipe Outer Race Driver, 55 [B]: 57001
Apply grease to the outer races.
Replace the bearing inner races and oil seal with new
Apply grease to the oil seal.
Install the oil seal [A] on the steering stem, and drive the
lower ball bearing inner race [B] applied the grease onto
Special Tools - Steering Stem Bearing Driver,
Steering Stem Bearing Driver Adapter,
41.5 [D]: 57001-1345
Install the lower ball bearing [A] onto the stem.
Grease the following.
Inner and Outer Races
Lower and Upper Ball Bearings
The lower and upper ball bearings are identical.
Install the stem [A] through the head pipe and install the
ball bearing [B] and inner race [C] on it.
Stem Cap [D]
Steering Stem Nut [E]