Check the slider guide for damage and cracks. Using vernier calipers to measure the thickness of the slider guide. If the thickness is less than service limit, replace the slider guide. Remove and discard the stop ring (A) on the cylinder by expanding it using a snap ring pliers. Remove and discard the lock screw (B). Install the new lock screw on the rack housing. Install the new stop ring in the groove (C) on the cylinder by expanding it using a pair of snap ring pliers. Be careful not to scratch or damage the housing surface with the stop ring edges.

Apply grease to the indicated part (shaded part) of the outer surface of the rack housing. Do not apply to the dents and grooves. aaa