Spiky 37 Posted November 20, 2007 ok, i've had the 406 MC on my car all year now and i'm not 100% happy with it, there is a bit of travel in the pedal before any braking is done, i've bledd the system several times, so i ruled that out, is the arm that sllides into the MC adjustable?? and should i have extended this before fitting the new MC Share this post Link to post Share on other sites
Super Josh 4 Posted November 20, 2007 (edited) I have the same problem as you. Yes the rod is adjustable, but it can be seized too. You really need something like a vernier caliper so that you can measure the depth of the hole in the MC and also how much the rod protrudes by. So that you can work out accurately how much to adjust it. Josh Edited November 20, 2007 by Super Josh Share this post Link to post Share on other sites
Spiky 37 Posted November 20, 2007 i have the kit to do that, thanks for that, i'll have a look later Share this post Link to post Share on other sites
Normski 1 Posted November 20, 2007 I had this when I fitted my 406 MC. I didn't realise the accuracy needed when measuring the clearance between the servo rod and the MC. I thought it was close enough and fitted the MC. Only to have a longer pedal travel than what it should be. I took it off again and changed the clearance a tiny amount ( 0.5mm !!!) and it made a huge difference to the pedal travel. Share this post Link to post Share on other sites
Super Josh 4 Posted November 20, 2007 What tools did you use to adjust the rod? It's been a while since I loked at it, but from memory the end of the rod is knurled? And the lock nut is a little way down the rod and it's difficult to get a spanner on it to release it. Josh Share this post Link to post Share on other sites
tom_m 0 Posted November 20, 2007 iirc there should be some clearance between the rod and the MC to allow for heat expansion of the brake components. too little clearance can result in the brakes binding on Share this post Link to post Share on other sites
Normski 1 Posted November 22, 2007 What tools did you use to adjust the rod? It's been a while since I loked at it, but from memory the end of the rod is knurled? And the lock nut is a little way down the rod and it's difficult to get a spanner on it to release it.Josh Maybe there's different types, because on mine (1992 1.9), there was a domed nut on the very end of the servo rod. The servo rod itself could rotate freely so it was a case of holding the servo rod with grips so the nut could be adjusted. By holding the brake pedal fully down, the rod is a bit easier to work on. If after adjustment the brakes bind, then you've gone to far. Share this post Link to post Share on other sites
