Project Z750 part 22

So, on to the last front brake caliper. It needs a wash to get rid of some bicarbonate of soda from where I tried blasting it. Easy enough, just let it soak in a tub of water and wash it over thoroughly. then leave it for a day to dry.

Once it had dried, I started to put the oil seals in. one of the piston oil seals went in easily enough with a bit of fiddling, but the other just didnt want to go.

eventually, I tool the seal out and had a good look at the channel that it sits in, and realised that I hadn't cleaned it out enough. there was still some old road salt in there.

I used an old chopstick to scrape the crap out of the channel. I use a bit of wood as it shouldn't be so tough as to scratch the surface, but should be strong enough to scrape the dirt out.

once I had scrapped the dirt out, I gave it a good wash in brake cleaner, and then tried the oil seal again. This time it went in with just a little bit of fiddling. the dust seals went in easily and then I used brake fluid again to lubricate the pistons and slid them in. I'm getting better at all this :)

the brake pads went on easily as I had already drilled out the hole to go over the caliper slider.

here are a few photos of the finished front brake calipers.

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Project Z750 part 16

The piston puller has arrived. it looks like a pair of pliers, but works opposite so that when you press the handles the "nose" of the pliers expands. the idea is that you put the nose into the piston, grip very hard and turn and pull the piston so that it comes out. the theory is great, but actually using one isn't. in use you are trying to grip as hard as you can, and at the same time trying to pull the piston out of the caliper (as well as maybe turning it if it's stuck like mine). it took a herculean effort to get one of the pistons out, I was gripping as if my life depended on it, trying to twist the piston and pull it out of the caliper. when it turned (a little) it gave me renewed hope of getting both pistons out, and eventually the piston was out, so just one more left. so now on to the fifth and final brake caliper piston. I put the piston puller tool into the caliper, gripped with all my might (no laughing please) and twisted. Well something mo...

Project Z750 part 18

I have done a bit of reading on how to clean brake caliper pistons, and found an article that said you could use fine wet and dry to clean corrosion off them [ http://www.motorcyclenews.com/new-rider/choosing-kit/2006/november/jan26-05-how-to-service-brake-calipers/ ]. as it suggested using 1500 grit wet and dry, I decided to be cautious and start with 3000 grit. I cut the wet and dry into strips about an inch in width. I put some wd40 onto a strip and started polishing the rear piston. After quite a while I started to notice the difference. it was getting cleaner. well, it was working, but it was going to take a long time. well, I was patient and I really didn't want to rush it and ruin the pistons. Over the next couple of weeks, I polished all of the pistons using the 3000 grit wet and dry. As it seemed it was going to take the rest of my life using 3000 grit wet and dry, I decided to take a risk and bought some 2000 grit. yep I was really pushing my luck here. I cut the 20...

Triathlon Training in the new year

So, my 2019 training has got off to a good start. I'm running regularly and my knees seem to be holding up. I've got a training plan to get me to a middle distance triathlon in September and I am managing the run distances I have set myself. I need to find some longer cycling routes to work and ones with a few hills too, but that shouldn't be a problem. my weekly cycling distance is okay, I just need to move to get my ebike to be doing less of the work. last week I did use my normal commuter bicycle and managed the whole four days as well as my runs, so that was a really good sign. Swimming won't be an issue, I have always found that to be the easy part of a triathlon (not that I'm fast, but I can keep going, and I did manage to swim the distance within the cut off time when I tried the ironman 70.3 last time) The main worry about going longer is my knees. I've got a 10K booked in late January which will test my knees out and I'm hoping that they hold ...

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