The last job to do on the 50 000 mile 200 with ABS I’m working on is a very spongey front brake. I’ve tried the usual squeezing of the brake handle and release of the bleed nipple to no effect. Then I tried positive pressure bleeding through a modified reservoir cap, but no improvement. I can hear a squishing noise when I pull the brake lever, which I assume is fluid leaking back past the master cylinder seals.
Just out of interest I took the master cylinder apart and found that the seal was loose inside the cylinder. I think that could be fixed back on if a new seal could be sourced, but the impossible part (for me) to replace is the rubber seal at the end of the cylinder where the brake lever is pushing.
I ordered a second hand master cylinder from eBay, which I fitted last night, but the cylinder on that is also leaking, probably because it’s been in a dry store for years. So I’ve decided not to fit a second hand one but to take the plunge and order a new one. With “special discount” they’re £145 :-0
I hope it works!
It’s surprising how many extra jobs there are to do on a 50 000 mile C1 compared to the more usual 25 000 mile ones I’ve done. Having said that, the engine compression is good and it runs well, although idling isn’t perfect but I’m putting that down to old petrol which has been in it for several years while it was in storage. Valve clearances are good. The only other positive surprise was that the stand works perfectly, I’ve never come across that before, congratulations to the previous owner
The extra jobs included: clutch, variator, headlight crack, windscreen crack, front shocks, front wheel bearings. All in addition to the more usual stuff, including a new headlight switch at £45 - another exciting moment at the dealer. I’ve learned how to recondition switches now after that!
It has a Datatool alarm fitted, which is very effective BUT a total PITA when you have to keep disconnecting the battery and reconnecting it to shut the alarm up while working on the bike. There’s a service mode but it keeps beeping every few minutes and drives the dog mad!
I love a challenge, and this bike has been a challenge. I’m looking forward to MOTing it soon and riding it round this Summer to sort out any other problems which are hiding.