Classic Honda Caliper Rebuild - Part 2 Cleaning

Part 2 of 3 Classic Honda Motorcycle Caliper Rebuild- Removal of dust and pressure seals. Cleaning the caliper and seal rings of aluminum oxide and slide rod shaft cleaning.

Transcript

so when you pop them in there yeah you take them straight in longer than 10 minutes also when you buy the degreaser check on the back because some of the ones that do affect aluminum actually is a brush toothbrush is just as good that's spring to come off can we say stakes okay so now that we've got the caliper out and we've cleaned off the main gunk out of that I want to do peel down the let's get the seals down now you can get these pits that you just something there so Riley's there about four or five bucks now you can actually see here we're just along this edge here you can already see where this piston has been tearing up this seal and you saw two dup all along that edge so you can see you know that's what's gonna cause from there the problem is is what that will actually do is then it creates so much friction so that the piston won't retract properly your brakes will bind and then also they won't push out correctly and when they do push out they'll be binding so that's why these need to be absolutely correct you can see the most Pistons of this era are made from steel and then they chrome plate them and you can see the the plaint that the chrome has come away from the surface so there's just there's just nothing you can do with this I'll show you a little bit later how to clean up pistons just as we go in there they're building things the listen let's get the caliper thumb just like get your pick these just fish straight out I mean you know they're not gonna be good for anything but you can see now if you look can you see that tearing along here now this is that what they call the dust seal then the dust seal the idea is is to stop main bolts of crap going down that side but it's actually primary role is a guide seal because what it'll do is it's there to keep the piston nice and straight because if you didn't have the guide seal the piston can twist and turn which we'll get into all sorts of problems so I would say to us we call it a guide sail but it's also known as a dust seal here we have the important one which is the pressure seal okay look you see all the crap that's coming out from behind it they say this is what causes a problems I mean that there's lots of lots of varying things that causes this problem but what you have here this is aluminum oxide and it's with the aging of the piston now this the certain factors that will increase this whether it's salt and the water but you know you can you see the pause there and what it will do is build up and then it will actually start to put pressure on the pressure seals so it's actually squeezes a piston too much and the piston then starts to become stiff and there's what it causes your problems it was much what happens with rubber as you know it it becomes old age it starts to dry out and become brittle and yeah it's just not serviceable so they're gonna be trash let's get the other ones now this one is exactly the same there you go you see you see how it's all sort of torn up there so again aluminum oxide build up now we'll go through the cleaning in a bit but you see all the white gunk coming away just flaking out there's your old sales this is why we're going to do is stuff I mean already just see kind of crap that's coming out okay next stage will be mr. Dremel now you can go round using the pick again and you do want to do this regardless get into all of these corners you just go right round both the upper and bottom corner takes a long time you go around now I do this regardless even once in adrenaline because it can pick some of the real stiff stuff in the corners now pressure sale is the important one because obviously that's what it's there to keep the fluid in but equal as much you need to work just as hard on the guide seal it's all cleaned out you can feel as it as it goes round you can feel the tip of the pick catch one all the lumpy stuff now we have two types of brushes here for the Dremel okay this really makes the job so much easier and would strongly recommend you can get these thin very expensive these days nor the brushes and it's the way that you really want to go what is extremely important though if you must use a brass brush do not use a steel brush the steel is far too abrasive and you'll actually damage your caliper you must use a brass soft enough for the aluminium aluminium but you will also be able to get into all the bits and clean all the crud out of the caliper this one I generally use for all of the outer surfaces like here a little flat one here they wouldn't have just used for all the edges now what you want to try and do is have this as far out as possible I mean this is a cheap Dremel but if you get the better ones you can actually almost look at the pen tips which is far better because it catches around these hangers on this side you can do edge that'd be a little bit more careful with it and so about 10 minutes oversight going around we pick out if there's any other particular bits with it catching on so as you can see it's beginning to look a lot better and a lot cleaner now if you can see it and it's it looks like it's a case of just working through with the Dremel and also the Peck use the picks game to those corners and it helps you just sort of feel your way around saying hey guys yeah that's been around a few times already and you see it's still dragging up stuff yeah we've got a pile of this stuff and that's all just come out of the Rings the game back to the dremel around the circle's back okay another thing that we're gonna do is this is the slide shop now this is actually a really really important part this caliper and just need to push this through as it's a single-sided caliper as it's a single-sided caliper what it needs to do is always centralized and this is primarily what they use now these are prone to getting stiff and you can sort of see again looking at that's all cruddud up there's no grease on here but this needs to keep essential to the rotor and this is the only way that it does it if this doesn't work you're only going to have two Pistons either pushing on the rotor and not actually clamping as it should do or it'll be dragging against the rotor so it's it's a Cu fundamental piece that you really must make sure you pay attention and get this this bit correct these are the rubber boots of ones I've seen a lot worse believe me so again if you can again we want to get this cleaned here you see all the inside that shaft and I'll just run through again I want to get some brake cleaner on that and you want to get that so again it is clean as polished as the rest of it okay so now that we've got this all cleaned up with the Dremel what we'll need to do is then go back and izzi's back for another bath and give it a good wash out again back with the toothbrush same procedure as before we'll get it soaked in washed out completely and then we'll finish it off again with the brake cleaner just just to get that off of it and it'll bring up all shiny and then as we're doing it we'll go through all the other bits especially this you know you can just feel it we'll get all of this scrubbed up for this I generally find these these clean quite well on scotch-brite again you want to use detergent and also brake cleaner just sliding it backwards forwards and then this will come up nice so I want to get to and get these done and then we'll go from there okay