4) 4) CONTROL PLATE CONTROL PLATE Check the slide surface for any damage. When the damage is large, replace the plate with new one. (1) R55NM7PH48 5) 5) (1) GUIDE AND RETAINER GUIDE AND RETAINER Check for scouring or stepped wear. If this can not be corrected, replace the guide and retainer with new full-set. (2) Fine scouring or damage can be corrected with lapping. Carry out thorough washing after lapping. R55NM7PH49 6-20