A pop bumper ring on the right tree bumper broke last friday!
I ordered some spares from JJP and they came pretty quickly (thanks paul).
I was impressed with how easy it was to replace.
Use a Klein 1/4" hollow magnetic nut driver to remove the 2 nylock nuts holding the tree down.
The tree is rubber so you have to press down on the nut with the driver to squeeze onto it.
The tree fit fairly snug onto the mounting plate screw studs, just wiggle and pull and it comes free.
I used a Klein #2 phillips to remove the 2 black screws that go into the hex stand-offs. The stand-offs are aluminum so when re-installing dont strip them out.
I used the same 1/4" nut driver to remove the hex stand-offs and the broken ring came out easily.
On reassembly I did have to grip the post with a 4" micro channel lock plier the keep it from turning while tightening on one of the sides.
JJP sent me new hex stand offs but they were silver and not anodized black. Mine were a little scraped up from the damage but covered up easily with a black sharpie marker, so I reused them.
I painted the silver ones with the black sharpie (3 coats) and they look good enough as you an barely see them anyway.
Just a note: if you order the hex stand-offs try to get the black ones if they have them.
The whole repair took approximately 10 mins including finding all the right tools.
For a cheap/thin steel ring it held up amazingly well (9000 plays) nice engineering work on this!
I think the right tree bumper takes the most abuse of the three.