Mercury 8E5Z-5421991-B Cylinder Assembly - Lock

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To replace the outside door handle lever the following are the procedures, Removing the trim cap for the outside handle retaining screw and turning the screw counterclockwise until it loosens but does not come out. Secondly, remove the cover of the outside handle and sliding it to the rear, pulling the handle off the handle reinforcement apparatus fit in the door. Slider-check and, if necessary, replace the outer door handle seals as these may be cracked or in very poor condition. For the inside door handle, you have to pull off the trim panel, then you pop out the handle from the door panel, line up the actuator cable along the slot in the handle lever, then you pull the end plug of the cable out before you pry out the actuator bushing. Installation process is the exact opposite to this process. To gain access to the door latch and outside door handle reinforcement the outside door handle lever, door trim-panel, upper and lower actuating rod as well as the keyless entry pad harness if installed must be removed. Disengage the reinforcement mounting fastener, and rotate the assembly inward to be extracted from the interior of the door, then disengage the latch mounting fasteners and extract the latch, as well as the outside door handle reinforcement as a single piece while disconnecting the electrical connection. Door lock cylinder refer to the fact that it cannot be replaced by a new cylinder, the old cylinder has to be chucked and a new unit has to be made from a lock repair package to be obtained from the dealer. To dismantle the lock cylinder further, one has to pull a ring by which it will be possible to extract it from the handle outside door; in assembling, one has to remember that the D-shaped opening in the new lock cylinder, which has to be put in place of the old one, must fit in the D-shaped opening in the lock cylinder lever. Finally, to take out the keyless entry pad the upper trim cap has to be removed then, using a screwdriver the clip that holds the key pad on the reinforcement handle can be released and thus the key pad pulled out and the electrical connector disconnected and the real reverse order is the process of installation.

To replace the outside door handle lever, begin by removing the trim cap for the outside handle retaining screw and loosening the screw without removing it. Next, take off the cover from the outside handle and pull the handle out and to the rear to disengage it from the handle reinforcement inside the door. Inspect the outside door handle seals and replace them if they are cracked or deteriorated. For the inside door handle, remove the door trim panel, disengage the handle from the regulator module, and disconnect the actuator by prying out the bushing, aligning the cable with the slot in the handle lever to pull out the cable end plug. For the outside door handle reinforcement, first remove the outside door handle lever, then the door trim panel and the power window regulator. Disengage the upper and lower actuating rods, disconnect the keyless entry pad harness retaining clip, and remove the handle reinforcement. When dealing with the door lock cylinder, note that a new cylinder cannot be simply installed; instead, discard the old one and build a new unit using a lock repair package from the dealer. Remove the outside door handle, disengage the release tab, and install the rebuilt lock cylinder by aligning the D-slot. For the liftgate latch, remove the trim panel, disconnect the electrical connector, and remove the latch bolts. The installation process is the reverse of removal, followed by de-initialization/initialization procedures. For power release switch models, remove the liftgate trim panel, disconnect the electrical connector, and remove the switch molding screws to take out the switch. For manual release switch models, remove the trim panel, disconnect the electrical connector, and remove the switch molding nuts before taking out the switch. For the keyless entry pad on 2014 and earlier models, remove the upper trim cap, release the clip holding the keypad, and disconnect the electrical connector. For 2015 and later models, the keyless entry pad is integrated into the door upper trim panel; remove the exterior mirror, lower the window, and take off the door panel and moulding fasteners. Disconnect the key pad entry electrical connector and remove the door upper trim panel fasteners, pulling the harness out through the window opening. The installation process is the reverse of removal for all components.

To replace the outside door handle lever, begin by removing the trim cap for the outside handle retaining screw and loosening the screw without removing it. Next, take off the cover from the outside handle and pull the handle out and to the rear to disengage it from the handle reinforcement inside the door. Inspect the outside door handle seals and replace them if they are cracked or deteriorated. For the inside door handle, remove the door trim panel, disengage the handle from the regulator module, and disconnect the actuator by prying out the bushing, aligning the cable with the slot in the handle lever to pull out the cable end plug. For the outside door handle reinforcement, first remove the outside door handle lever, then the door trim panel and the power window regulator. Disengage the upper and lower actuating rods, disconnect the keyless entry pad harness retaining clip, and remove the handle reinforcement. When dealing with the door lock cylinder, note that a new cylinder cannot be simply installed; instead, discard the old one and build a new unit using a lock repair package from the dealer. Remove the outside door handle, disengage the release tab, and install the rebuilt lock cylinder by aligning the D-slot. For the liftgate latch, remove the trim panel, disconnect the electrical connector, and remove the latch bolts. The installation process is the reverse of removal, followed by de-initialization/initialization procedures. For power release switch models, remove the liftgate trim panel, disconnect the electrical connector, and remove the switch molding screws to take out the switch. For manual release switch models, remove the trim panel, disconnect the electrical connector, and remove the switch molding nuts before taking out the switch. For the keyless entry pad on 2014 and earlier models, remove the upper trim cap, release the clip holding the keypad, and disconnect the electrical connector. For 2015 and later models, the keyless entry pad is integrated into the door upper trim panel; remove the exterior mirror, lower the window, and take off the door panel and moulding fasteners. Disconnect the key pad entry electrical connector and remove the door upper trim panel fasteners, pulling the harness out through the window opening. The installation process is the reverse of removal for all components.

Use a knife or scraper to cut through the butyl strip carefully, ensuring not to damage the weather shield or door panel. Do not touch the adhesive as re-bonding will be impaired.

Hold the door handle as if you were going to open the door while the door is open. Hold the door handle in this position as you turn the release screw 8 full turns. The handle will release around 6 turns but to reinstall the handle you must complete the 8 total turns.

8E5Z-5421991-B it is a kit that is for rebuilding the cylinder lock. a locksmith is needed to put the tumblers in the right order for the customer key to fit.