Disintegrated Strut Bushings

[ew1usnr]

... the sleeves are there, when included, to stop you from crushing the bushings. I noted elsewhere that NOS rubber parts don't seem to survive being put into service. Not sure if these were, but may have been old stock. They seem to be crumbling as well.

I telephoned PST this past Monday morning and canceled the order for the poly-graphite bushing order. They were nice about it and didn't argue.

Operating on the assumption that the squished bushings had indicated that the steel spacer sleeves had not been installed, I ordered another OEM-style strut bushing kit from FalconParts.com this past Sunday. That order was delivered yesterday and after I got home from work I took the car back to the mechanic who had rebuilt the front end this past August. I explained that the bushings had disintegrated and that the metal spacers might not have been installed. He looked surprised but didn't argue and said that he would take a look at them. I also showed him the diagram that Kenny had posted where it shows the rear washer with the dish facing outward and the front washer facing inward. I asked him to re-check the alignment and to also replace the ruptured dust boot on the left inner tie rod end.

Ruptured tie rod end dust boot
Ruptured dust boot.jpg

They called me this afternoon and said that the car was ready. The mechanic showed me the squished bushings and said that the spacers had been installed, and that it had been the composition of the rubber bushings that had been at fault.

Crumbled strut rod bushings
1-DCP_0043.jpg

I explained that the new set of bushings had come from the same company where I had bought the first set from. The mechanic said that the new set of bushings was different. He said that the new bushings had been made from polyurethane. I said that I had been told not to use polyurethane bushings because they were too stiff. He said that the poly bushings came in different degrees of stiffness and what I had was fine and that I would not notice any difference. He said that maybe FalconParts had problems with the supplier of the rubber parts and had switched to a new supplier with the polyurethane parts. I had handled the new poly bushings and rubbed them with silicone grease and it had never crossed my mind that they were not black rubber. The new bushings had not felt any harder than the previous rubber bushings. The mechanic also said that he had replaced the one torn tie rod end dust boot and that all the other boots were good.

New polyurethane left strut rod bushing
1-DCP_0044.jpg

New polyurethane left inner tie rod bushing dust boot
2-DCP_0045.jpg

And the mechanic wrote the work off as a return visit on the previous front end rebuild and alignment and said that there would be ... No Charge!

I think that I will mail the disintegrated rubber bushing back to FalconParts, though, and ask for my $32 back.

I had the mechanic install the washers as shown in Kenny's drawing. That configuration seems correct because as the strut rod moves up and down at the lower control arm, the radius point of the arc of motion would be at the outer washer. The bushing would not tilt much there and the inward facing dish of the washer would serve to center the bushing. The trailing washer is where the arc of movement would occur and the bushing flexes against the convex curved front surface of the washer with its dished surface facing the rear. At least that is my theory.

The weather is ideal, gas is cheap, and my Falcon is back on the road. Yea!