1JZGTE Posted July 22, 2013 Share Posted July 22, 2013 In all seriousness, probably unlikely but I was wondering what the consensus was. I did a disc and pad change yesterday. When putting new pads in, the way I should have done it, is to clip plate 1 onto the pad from behind as shown, and then on top of that, I should have then clipped on plate 2, as circled. Now, I simply clipped plate 2 onto the back of each pad and then whacked the lot into the caliper and after taking the car for a test run, all seemed fine. I forgot to stick in plate 1. I guess my questions are: 1. Is it crucial to put this piece which I have accidently left out back in? 2. What purpose does it serve? Quote Link to comment Share on other sites More sharing options...
stevie_b Posted July 22, 2013 Share Posted July 22, 2013 I think it's an anti-squeal shim. Omitting it shouldn't contribute towards your untimely death anywhere near as much as using WD40 near your brakes. What did you use WD40 for? IIRC it's not good for rubber seals, the sort that hold the brake fluid inside the calipers instead of giving your brake disc a DOT4 shower, and you a brown trouser moment. (I jest a bit, it's OK to use it for some brake-related things like freeing off seized bolts, but don't get it anywhere near rubber seals). Quote Link to comment Share on other sites More sharing options...
clay Posted July 22, 2013 Share Posted July 22, 2013 what he said. Quote Link to comment Share on other sites More sharing options...
1JZGTE Posted July 22, 2013 Author Share Posted July 22, 2013 Oh feck! When I took the old pads out, I got a wire brush and gave the calipers and also teh caliper pistons (I left them for about 30 mins to pop out) and the area around them a good cleaning (loads of muck, rust, you name it!), being careful not to snag the rubber piston boots. I then sprayed the pistons with WD40 and wiped them down with rag to make them clean. It shouldn't affect the rubber too much, should it? WD40 dries quickly, no? Quote Link to comment Share on other sites More sharing options...
Dnk Posted July 22, 2013 Share Posted July 22, 2013 (edited) You should use brake cleaner, you can buy it from Halfords in handy spray tins same size as your WD40 tin It evaporates unlike WD40 and i wouldn't use a wire brush anywhere near the piston seals, a new toothbrush does the job and wont damage the seals I'd clean them again if it were me Edited July 22, 2013 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
1JZGTE Posted July 22, 2013 Author Share Posted July 22, 2013 (edited) I just been on the WD40 website and they say: "WD-40 can be used on just about everything. It is safe for metal, rubber, wood and plastic. WD-40 can be applied to painted metal surfaces without harming the paint. Polycarbonate and clear polystyrene plastic are among the few surfaces on which to avoid using a petroleum-based product like WD-40." Not that you should always trust a manufacturer, but... Also I saw this interesting post on another forum, where a guy soaked an O ring for a month in WD40... http://www.thumpertalk.com/topic/534631-does-wd40-hurt-o-rings-a-test/ And this... http://www.advrider.com/forums/showthread.php?t=350310 For next time, I know, but hopefully as a one off, I haven't done any damage. Edited July 22, 2013 by 1JZGTE (see edit history) Quote Link to comment Share on other sites More sharing options...
stevie_b Posted July 22, 2013 Share Posted July 22, 2013 During my caliper refurb, I'll have used the following products: - Brake cleaner (aerosol) - Red rubber grease (supplied in Toyota's refurb kit but cheap enough on ebay) for the piston seals - High temperature CV moly grease for the slider pins - Copper grease on the anti-squeal shims. You wouldn't need all of these unless you're stripping the brakes down and doing a full refurb. Quote Link to comment Share on other sites More sharing options...
Nic Posted July 22, 2013 Share Posted July 22, 2013 I don't run with any anti squeal shims, you get a better pedal feel without them. Quote Link to comment Share on other sites More sharing options...
stevie_b Posted July 22, 2013 Share Posted July 22, 2013 Re WD40, it depends what you read and who you listen to: http://www.skylineowners.com/forum/showthread.php?t=180979 It's an ongoing debate as to whether it harms rubber seals or not. Not all rubbers are alike, so testing different types tends to give different results which is probably the cause of the confusion. Quote Link to comment Share on other sites More sharing options...
1JZGTE Posted July 22, 2013 Author Share Posted July 22, 2013 Cheers to all for the replies Quote Link to comment Share on other sites More sharing options...
1JZGTE Posted July 22, 2013 Author Share Posted July 22, 2013 Re WD40, it depends what you read and who you listen to: http://www.skylineowners.com/forum/showthread.php?t=180979 It's an ongoing debate as to whether it harms rubber seals or not. Not all rubbers are alike, so testing different types tends to give different results which is probably the cause of the confusion. Wow, just seen that, that boot doesn't look good at all I will take it apart later this week and wash them with some soap and water to rid of any WD traces Bollock! Quote Link to comment Share on other sites More sharing options...
Nic Posted July 22, 2013 Share Posted July 22, 2013 During my caliper refurb, I'll have used the following products: - Brake cleaner (aerosol) - Red rubber grease (supplied in Toyota's refurb kit but cheap enough on ebay) for the piston seals - High temperature CV moly grease for the slider pins - Copper grease on the anti-squeal shims. You wouldn't need all of these unless you're stripping the brakes down and doing a full refurb. I used: Car Plan Brake Cleaner Fuchs Red Rubber Grease on the rubber seals. Granville Molybdenum Grease on moving metal parts I don't use shims and I don't grease the back of the pads, as it could potentially get onto the pad friction material. Quote Link to comment Share on other sites More sharing options...
Dnk Posted July 22, 2013 Share Posted July 22, 2013 Wow, just seen that, that boot doesn't look good at all I will take it apart later this week and wash them with some soap and water to rid of any WD traces Bollock! USE Brake cleaner it will remove the WD40 much quicker and better than soap and water ! Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 22, 2013 Share Posted July 22, 2013 (edited) You'll probably do more harm messing about with them, leave them with the WD40 on them, but don't use it again. Caliper hydraulics should only have either red rubber brake grease or clean brake fluid on them for lubricating, and brake cleaner (a PC version of carbon tetrachloride) for cleaning. Nothing else. Edited July 23, 2013 by Chris Wilson I have put my glasses on.... (see edit history) Quote Link to comment Share on other sites More sharing options...
1JZGTE Posted July 22, 2013 Author Share Posted July 22, 2013 Ok, thanks guys, lesson learnt! Quote Link to comment Share on other sites More sharing options...
Ian C Posted July 22, 2013 Share Posted July 22, 2013 I don't run with any anti squeal shims, you get a better pedal feel without them. This. Amazing difference. Also, no squealing Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 23, 2013 Share Posted July 23, 2013 Floating discs make it even better still At a price.... I learnt the no anti squeal shim trick about 40 years ago! It's remarkable how much added piston movement "squashing" the shim pack entails, which tranlates to many times more movement at the pedal. Quote Link to comment Share on other sites More sharing options...
1JZGTE Posted July 23, 2013 Author Share Posted July 23, 2013 I don't run with any anti squeal shims, you get a better pedal feel without them. Nic, are you saying your run without ANY of the shims above (1 + 2 as per my pic)? Quote Link to comment Share on other sites More sharing options...
Nic Posted July 23, 2013 Share Posted July 23, 2013 Nic, are you saying your run without ANY of the shims above (1 + 2 as per my pic)? Yes no shims, just the brake pads, no squeal. CW above learnt it 40 years ago and I learnt it from him Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 23, 2013 Share Posted July 23, 2013 You're just like a son to me Nic Did your pads arrive? No shims! I learnt that 40 years ago..... Quote Link to comment Share on other sites More sharing options...
Nic Posted July 23, 2013 Share Posted July 23, 2013 You're just like a son to me Nic Does that mean I get to drive Dad's motors? Did your pads arrive? No sign of the pads yet, have they been sent? No big rush as my new wheels/tyres won't arrive until the end of the week. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 23, 2013 Share Posted July 23, 2013 They should arrive today, certainly tomorrow. Cheers Nic Quote Link to comment Share on other sites More sharing options...
1JZGTE Posted July 23, 2013 Author Share Posted July 23, 2013 Yes no shims, just the brake pads, no squeal. CW above learnt it 40 years ago and I learnt it from him Fine, I will rid of the other shim over the weekend. Quote Link to comment Share on other sites More sharing options...
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