How to Replace a 2-Hook FUHR Sliding Door Lock

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					http://www.allaboutdoors.com                                                              Published 11/12/2012


                    How to Replace a FUHR 2-Hook Sliding Door Lock
                            Special thanks to Robb K. for helping us with this tutorial

                   For Questions or Concerns, please refer to All About Doors & Windows
                                      http://www.allaboutdoors.com

This is an article on how to replace a FUHR 2-hook sliding door lock with a HOPPE 2-hook lock. We
carry both of these locks. If your FUHR lock is broken, a direct replacement can be purchased through
us. The HOPPE functions a little bit differently than the FUHR lock, and some customers have elected
to replace their FUHR with the HOPPE for that reason.

The FUHR lock extends most of, if not the whole, way up the edge of the moving panel. Once the door
is closed, the lock automatically engages. To open the door, the handle must be lifted. If the thumbturn
is turned to the locked position while the door is closed, the door cannot be opened even if the handle is
turned.

The HOPPE lock does not lock automatically when the door closes. The handle is stationary and is
simply used to pull the door open and closed. Once the door is closed, turning the thumbturn
effectively engages the locking hooks and secures the door in the locked position.

1.     Loosen the set screw on the interior sliding door handle until you can pull it off the spindle.
       From the outside, remove the other handle (with spindle attached).




2.     On the edge of the sliding door, remove the cylinder screw, which is located approximately 5-
       1/2 inches below the central locking post.

              All About Doors & Windows       |   1901 Cherry St. Kansas City, MO 64108-1714
http://www.allaboutdoors.com                                                       Published 11/12/2012




3.     Make sure the thumbturn of the cylinder is turned to the "unlocked" position and remove the
       cylinder through the interior side of the door. When cylinder is locked, cam points up and
       cylinder won't fit through the hole. When cylinder is unlocked, cam is pointing down.




4.     Unscrew the interior and exterior escutcheon plates, and remove them from the door.

5.     The lock runs up and down most, if not all, the length of the edge of the door. Remove all the
       screws and slip the lock out of the door.




             All About Doors & Windows     |   1901 Cherry St. Kansas City, MO 64108-1714
http://www.allaboutdoors.com                                                       Published 11/12/2012


6.     On the door frame, remove all the
screws securing the strike plate in place, and
remove the strike plate from the door frame. We
include a new strike plate in our kit #4990260
when you install the new lock, because the
hooks are in different locations.

7.      The new lock does not have moving
handles like the original lock, and opposite the
original lock, the new HOPPE lock features the
thumbturn above the handle. The spindle of the
new handleset will line up with the spindle hole
of the original handleset. Hold the new lock up
to the door so the spindle holes line up. Make
sure lock is going the correct direction; hooks
should be pointing up and word "HOPPE"
should be right-side-up.




8.      Mark on the face and edge of the door
the locations and measurements of the lock
body and each of the hooks. You will need to
create new mortises for these features in the
edge of the door. *NOTE: When mortising
out the door edge, it may help to measure the
depth of the lock body and the hook locking
mechanisms so you can then measure
thatsame depth on your drill bit. Mark the




              All About Doors & Windows    |   1901 Cherry St. Kansas City, MO 64108-1714
http://www.allaboutdoors.com                                                           Published 11/12/2012


depth on your drill with a piece of tape, so you can keep track of how deep into the door you're
drilling.

9.     Fill in the original holes so you have something to drill your new lock into.

10.    The new lock is shorter than the original and has rounded ends. We suggest using a hacksaw to
       trim off the curved ends and screwing in pieces of filler faceplate (included in kit #4990260)
       after installing your new lock to fill the shallow full-length mortise left by the original lock.

11.    Once the lock has been installed the full length of the door, stick the new HOPPE escutcheon
       plate (included in part # 2081959) with attached spindle through the interior side of the door.
       Mark where screw holes need to be drilled.




             All About Doors & Windows     |   1901 Cherry St. Kansas City, MO 64108-1714
http://www.allaboutdoors.com                                                          Published 11/12/2012


12.    Drill screw holes and install escutcheon plates. Check the operation of the lock with the door
       open. *NOTE: The new lock has an anti-slam device so that the locking hooks cannot be
       extended if the door isn't closed. Depress this small black button near the center of the
       lock with your finger and turn the thumbturn. If hooks extend correctly, finish installing
       the handles.

13.    Now we need to make sure the lock has something to lock into. The original FUHR strikeplate's
       holes for the hooks are in the wrong places for the new hooks. If the original strike plate is a flat
       metal piece (instead of a u, channel-shaped piece), install the new strike plate (included in kit
       #4990260) so that the center line and logo on the strike plate match up directly with the center
       line and logo on the lock on the moving door.

       ◦ If your original lock had a U-shaped channel strike, you need to be able to raise the flat
         strike plate within the mortise so that it is flush with the door jamb like the original was.
         The easiest way we've found to do this is to install blocks of wood up and down the mortise
         to screw the strike plate into. The wood blocks need to be cut to the same depth and width
         of the original strike (minus the 2mm thickness of the flat strike to be screwed into it). Do
         not screw a block into the jamb where a hook is supposed to hit.
       ◦ Make sure hook holes are lined up with hooks in lock. *NOTE: Hooks move upwards, so
         alignment and space for hooks needs to be measured while anti-slam device is
         depressed and hooks are engaged.
       ◦ Install strike plate.




14.    Use a ruler to measure the depth of the hole where the hooks engage. Is there enough room for
       the hooks to properly engage? If there isn't, mark how deep the mortise needs to be, remove the
       strike plate and chisel out additional space for the hooks. If you have done this, replace the
       strike plate, making sure it still lines up correctly.


             All About Doors & Windows      |   1901 Cherry St. Kansas City, MO 64108-1714
http://www.allaboutdoors.com                                                                 Published 11/12/2012



15.    Regardless of what type of strike you have installed, carefully check the the alignment of the
       strikeplate. Slide the door almost shut. Without shutting it, depress the anti-slam device and
       eyeball the alignment of the hooks with the holes in the strike. *NOTE: If this is off and you
       manage to engage the locks, it could be difficult to get the door open.

16.     Use extra filler faceplate to cover up any exposed mortise in door jamb from original
strikeplate.




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          satisfied customer.




              All About Doors & Windows        |   1901 Cherry St. Kansas City, MO 64108-1714

				
DOCUMENT INFO
Description: This is an article on how to replace a FUHR 2-hook sliding door lock with a HOPPE 2-hook lock. We carry both of these locks. If your FUHR lock is broken, a direct replacement can be purchased through us. The HOPPE functions a little bit differently than the FUHR lock, and some customers have elected to replace their FUHR with the HOPPE for that reason. The FUHR lock extends most of, if not the whole, way up the edge of the moving panel. Once the door is closed, the lock automatically engages. To open the door, the handle must be lifted. If the thumbturn is turned to the locked position while the door is closed, the door cannot be opened even if the handle is turned.