Remove the valve body unit (A) from the steering gearbox. Remove the O-ring (B) and discard it. Remove the two boot bands (B) from boot A. Compress boot A by hand, and apply vinyl tape (C) so the boots stay collapsed and pulled back.

Attach the yoke (A) of a universal puller to the steering gearbox mounts with bolts. Securely clamp the yoke in a vice with jaws as shown. Do not clamp the gearbox housing in the vice. Set the special tool (A) on the lock screw (B) securely, then loosen and remove the lock screw from inside of the gearbox housing (C).