Jump to content

99 R Model Cylinder lock and Ignition Replacement

Recommended Posts

Hi there folks.

I have an 99 R Model that I am trying to reinsert new cylinder locks, but I can't seem to get it back in one piece and actually make the door lock function.  

I need to know where to start with changing out the ignition cylinder too. I never changed out an ignition cylinder or door lock before.

Any help out there please?

Link to comment
Share on other sites

I haven't tried an ignition cylinder so no help there.

There is a metal clip in the door jamb that retains the lock cylinder.  Remove the clip with a screwdriver and pair of pliers.  This should free up the cylinder so it will come out.  There is a shaft between the cylinder and the actual lock/latch mechanism. Put your new cylinder in lining it up with the shaft and put the retaining clip back in the slot.

This was on an 88 and I think it should be the same on the 99.


It doesn't cost anything to pay attention.

Link to comment
Share on other sites

Thought about it and remembered I had a switch on the shelf.

The switch will have to come out of the dash.  It took me several tries to do it sitting at the bench so I think in the truck would be a pain.  So, after messing with it for a few minutes, this is what worked for me.  Hopefully, your switch looks like this Mack 1MR3172P2.

Using a paper clip or mini screwdriver, insert straightened end into hole in the switch body while the key is in the accessory position and push in toward the cylinder.  There is a spring loaded brass collar that needs to be compressed.  If the brass collar is fully depressed, it will allow you to gently pry with a mini screwdriver the cylinder out of the switch body.


ignition cylinder.JPG

  • Like 2


It doesn't cost anything to pay attention.

Link to comment
Share on other sites

  • 3 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...