Remove the left cover. See Left cover removal.
Remove the LVPS. See LVPS removal.
Remove the screw (A).
Remove the LVPS cage. See LVPS cage removal.
Remove the EP gear box. See EP gear box removal.
Remove the two screws (B).
Remove the two screws (C), to release the ITU ground spring.
Lift the rail, and then move it slightly to the right.
Gently twist the rail to release the two tabs (D) from the frame, and then remove it.
Make sure that ITM dog bone retract (A) and the spring (B) on the new rail are securely attached.
When reinstalling the EP gear box, carefully insert the ITM drive shaft through the left side of the frame and rail to avoid damaging the ITM dog bone retract.
Make sure that the tabs (C) are properly inserted into the frame.
Make sure to place the rail below the thermistor wire tie (D).
Make sure that the three HVPS contacts (E) move freely and are fully extended.