Step 1. Gather Tools and Materials – Here is what you need:
- Safety glasses and disposable rubber gloves
- Blown out bumper plate – The kit is intended to repair a loose center bushing. It is not intended for new bumper plates or plates with damage to areas other than the center bushing. Don’t install the kit unless the bumper plate is otherwise headed to the garbage.
- Repair Kit – Make sure the screws are the correct length (see step 3)
- Olympic Bar and Rack – To aid in installation of the repair kit
- 1/4″ Drill Bit
- Portable Drill
- 2 Short Drywall Screws – For aid in installation
- LocTite 243 Medium Strength Primerless Threadlocker
- 1/8” Allen Wrench or Attachment for the Drill
- #2 Philips Screwdriver or Attachment for the Drill
- Hammer – To set the T-nuts
Step 2. Be safe. Review the Loctite package warning, have your rubber gloves handy and put on your safety glasses. Loctite MSDS can be found on the Henkel website:
Step 3. Make sure the screws are the correct length.
Pictured above, the screw on the right is correct, the one on the left is too short. Get the right length screws if you have the wrong ones in the kit. They should be approximately the same length as the thickness of the center bushing. Screw type is 10-32 flat head.
Step 4. Hang the bumper plate and a repair plate on a racked Olympic bar with the repair plate countersinks facing out.
Step 5. Secure the repair plate and drill the first hole – Hold the repair plate with 2 short drywall screws screwed right into the rubber through two of the three mounting holes. This will secure the repair plate while you drill. For best results, push the bumper plate up against the flange on the Olympic bar to keep it perpendicular while securing the repair plate. Drill a 1/4″ hole all the way through the bumper plate right through one of the mounting holes. Make sure the hole is cleared of all rubber debris.
Step 8. Repeat the process on the other side installing the second repair plate. The opposite plate will be rotated about 60 degrees to clear the hardware of the first plate. Don’t forget to push the bumper against the bar flange to keep it perpendicular while securing the repair plate.
Step 9. One by one, back each mounting screw out five or six turns to expose some threads on the T-nut. Apply a drop of LocTite 243 Medium Strength Thredlocker to the T-nut threads and re-tighten the mounting screw. Loctite starts to cure in 5 minutes, so within that time frame, tighten up all the mounting screws to secure the loose center bushing to your satisfaction. Inspect often, and if a mounting screw loosens, take it out, clean it up, apply LocTite and re-tighten.