Over the years, a percentage of my Triumph customers have brought their cars to my shop for a repair the check strap pin holder. I have the repair the piece when it pulls out and then perform the subsequent door shin crease repair. I am the first to admit that in the past, I did the repairs badly.
Whenever I visit Las Vegas, I spend lots of time shopping at Nevada Pic A Part. On one particular trip, I noticed a door check assembly on a Toyota. So, I bought a couple and brought them home with me to BC. Of course, like most inventers, I overthought the process. It finally occurred to me what to do, and I have been using the Toyota part ever since – it is a cost-efficient, strong solution. I’ve used this solution on Triumph doors ever since.
Here is what I do:
Take a check strap from a Toyota Corolla, drill out the pin and separate the two pieces.
Drill a new hole in the bracket to match the location of the Triumph pin position (this gives you the proper door swing
Remove the door panel using masking tape on the door to protect the paint and be able to mark the center pinhole location on the door
Take a hacksaw blade or cut off saw and cut off the broken door pin ears on the door. (I suggest removing the door if you are not familiar with tools)
When you have done this, center the Toyota bracket on the door and mark the attaching bolt hole from the bracket to the door.
Drill a small hole. Note: there is a reinforcing bar that you have to drill through, so be sure to go slow.
Once you have drilled a pilot hole, proceed to drill it out to 5/16” bolt, (I use an Allen head bolt) the Toyota bracket to the door and drop in a ¼” bolt or re-pin as the factory did. I do not shim the check strap; I let it float.
Test and then replace the door panel. Make sure the post check strap is in good shape. If not, order a new one and replace the old one.
Send me an email if you’ve got any questions. I have been doing this repair for many years with no comebacks. Feel free to repair the door skin.