Rear master cylinder serviceable?

neilmc said:
Dave,

Similar thing with my 4 wheeler in NZ ($150 car so a basic car by Aussie Two Wheels magazine scale in the '80's where over $700 was a luxury car) an Austin Cambridge, the testing station said 'need to fix your king-pins before the next visit' two or three years running! Back then (73?) I had a Triumph TR6P with an ARE 750 kit. Very oversquare, bit like the 1200.

Neil Mc
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I'm sure I have a reamer somewhere for doing the kingpins  :o

                                                    Dave
 
CLEMTOG said:
I will bet that some crap is blocking the little hole that the fluid goes through from reservoir to main body, its only about half a mill and is even harder to see when you are 60
CLEM
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Just as a bit of a heads up, and god forbid coming back on topic, I used a bristle from a wire brush to poke it through.  Still going to put the service kit in - well I've paid for it so I'll use it!!

Cheers
Robin.  :D
 
Neil/Robin,
The best way I found in bleeding rear brakes on tripples/500 espically tripple is take the system off the bike and bleed it with say the caliper held higher than master cylinder.
In your case Neil try holding(tie down) down the brake lever overnight,you might be lucky and the trapped air will hopefully travel back up .

Andy
 
Got the old bike roadworthy, as Cam says they probably just check the brake makes the brake light go on! Previous rear caliper had two bleed screws, with the single bleed screw ones I would have thought Brembo could have put it at the other end! It works ok and is getting better as the pads bed into the disc. Dave, fraid the old Austin is just a dim memory now!
Hope you got yours sorted Robin. With new master cylinder washers I have taken the old washer to the autoparts store and get them to show me all the same sized ones they have. Here in Tassie I asked the Ducati shop if they had master cylinder kits and they said that Brembo/Ducati no longer did them as someone killed themselves when they didn't do it correctly. No doubt you can get them online or whatever.

Neil Mc
 
Robin, fit the new kit, and fit lever and master and caliper to bike. Get a hold of a syringe and tube and reverse bleed the line, then remove the caliper and lift it higher than the frame. Easy done with seat removed. One mate to pump, you need to fit a spanner between the pads and have the bleed nipple pointing up.. rock it a little to ensure any air behind the pistons is going up, and bleed away.. you will be amazed mate.. great responsive brakes will be yours.. ;)
Just had the same issue after cutting a line at the Barry.. fortunately scrutineering was long done, so we just drained the system and pushed on.. don't really use the rear in racing, but handy to have if emergency stop required.. new line when I got home and voila.. but for me, the above method is the only way to save time and frustration.. incidentally, I don't believe in poking fine things in fine holes.. God made compressors for a reason, and this type of operation is surely what he had in mind.. ;)
HTH
8)
 
Hi
Has the 500 rear master cylinder got the small adjusting screw in the operating pivot lever?A friend was having problems bleeding his rear system,checked the small holes and everything.Backed the adjusting grub screw right out and it bled straight away,it was stopping the piston in the master cylinder shuttling back and forwards through its full stroke.so although the holes were not blocked the piston was not clearing them properly.
Neale
 
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