Try as I might, I can't find a picture of this online! The closest I could get was in the mk5 Jetta DIY on this forum ( ) Folks acknowledging different length pins but nothing about which goes where: Īll we'd really need is for someone to look at a car that hasn't had the brakes changed yet, or a new caliper/pin assembly and the pointer as to which was the leading pin. Misinformation about the pins supposedly being the same: Ĥ. trailing pin (note these pins look little like the ones in our car): ģ. To help, here are the threads I've found online that have been helpful, but not completely definitive in figuring out the correct pin placement:Ģ. FWIW, the front calipers have no play (they are bit different design though). Looking at the parts diagram online, VW doesn't specify which one goes where, they only show a complete assembly of guide pins and carrier (that's how they sell it).Īlso, if anyone could go jiggle their rear calipers (handbrake off) and let me know how much play there is, it would help me to understand for sure if that's normal. If I follow what the document says, it looks like the tapered or short pin goes in the leading position and the longer one with the flats is trailing. If the brake is mounted aft of the axle, then the relationship is the opposite.Īlthough not VAG specific, this document really helped me to understand what was going on (skip to page 14 and 15): A brake mounted forward of the axle will have the "top" slide pin act as the "leading" slide pin since the disc is rotating into that pin first before it gets to the "bottom" or "trailing" slide pin. And, as I've been learning, it's also not really correct to use "top" and "bottom", but rather "leading" or "trailing" to describe the pin locations. I searched for a good hour before I found someone with enough info to figure this out (see links below). The bottom pin was longer and has three flat portions along the pin length. In my case, the top pin was the shorter, 3-step tapered pin. So, I think the issue is that the pads aren't being held close enough to the disc and I'll be looking at the parking brake mechanism next (for another thread).Īfter taking the rear caliper off and looking at the guide pins, the top pin and bottom pin are different. But, the sound I hear if I jiggle it, is the sound I hear (a clunk really) in the car when driving. I suspected the caliper guide pins because it was possible to wiggle the caliper, which I believe is normal for a "floating" caliper. Although I haven't fixed the issue yet, I wanted to share some hard-to-find info regarding the rear caliper guide pins. I've been trying to diagnose a rear end clunk and have isolated it to the right rear brake assembly (not shocks, not sway bushings, end links or control arms).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |