Toyota seems to call this an "Pin, W/Hole(For Front Disc Brake Anti-Rattle)", I call it a pain in the rump... If i ignore it for more than a year it requires hammering and an hour's worth of effort (per side) to drive them out.
In the past I would just replace after a couple of years, they are soft steel and so they bend the tip; but after working on them yesterday, I am struck by the fact that they are now reduced diameter and looser in the caliper now. Thus they might not seize too quickly this time around? I still feel like I should get some spares to have on hand, but that leaves me wondering: just what is the downside of these pins having a loose fit? No braking force is transmitted through these pins, rather, they just hold the pads in place (instead of removing the caliper to change pads, you can just drive these pins out and it's supposed to be a quick brake pad change--yeah right!--I always have to hammer out the pads as they seize to the caliper too).
I've been applying Honda M77 moly paste to these pins (and the sliding surfaces of the pad ears), to try to slow down the seize; honestly, it was my fault that stuff got stuck this time around, as I neglected to bust everything apart last spring (it was 2 years and 12k since I last did this job).
In the past I would just replace after a couple of years, they are soft steel and so they bend the tip; but after working on them yesterday, I am struck by the fact that they are now reduced diameter and looser in the caliper now. Thus they might not seize too quickly this time around? I still feel like I should get some spares to have on hand, but that leaves me wondering: just what is the downside of these pins having a loose fit? No braking force is transmitted through these pins, rather, they just hold the pads in place (instead of removing the caliper to change pads, you can just drive these pins out and it's supposed to be a quick brake pad change--yeah right!--I always have to hammer out the pads as they seize to the caliper too).
I've been applying Honda M77 moly paste to these pins (and the sliding surfaces of the pad ears), to try to slow down the seize; honestly, it was my fault that stuff got stuck this time around, as I neglected to bust everything apart last spring (it was 2 years and 12k since I last did this job).