3 days ive spent tryin to bleed the fuckers now im totally out of paitence. tried the normal pump pump bleed but no joy, tried pushin fluid through with a syringe no joy, tried pullin fluid through with a syringe no joy, had the lever pulled back to the bar overnight to let bubbles settle still no joy. if it carries on like this itll be in the bikes for sale section next week :BangHead
Sometimes I find having a massive temper tantrum helps.
I hate bleeding brakes. I've been putting it off on my mountain bike since 2003.
What calipers you got mate?
Pistons and seals ok?
You haven`t got stainless nipples on them have you?
Is everything moving freely? Caliper slides and pistons? I did mine a few weeks back and had a spongy brake, it turned out to be trapped air in the Caliper and just by getting someone to pump up the pressure and hold it then you loosen off the nipple but watch out for flying fluid everywhere!!
Hope this helps.
Cheers,
Les.
Could be an airlock up near the reservoir, have you tried loosening the banjo bolts where they bolt into the reservoir and bleeding there? (plenty of rags to stop the fluid getting on the bodywork)
i got the triumph 4 pot calipers on there and yes it had stainless niples but ive put back the old ones now. they were fine on the other calipers but on these they seems to have leaked a bit. so theyve been swapped out. tried bleedin the banjo bolt at the cylinder and theres no air there. master cyilnder seems to have pressure behind it cos it pushes me finger of the banjo bolt hole.
fuzee, ive put 3 spoke wheels on now so i cant have the old slidin calipers no more. its got 4 pot sprint ones on now
Have you got the right brake lever fitted?
You could try and remove the brake lever, and use something like a screwdriver to push the piston in on the reservoir as you bleed them, doing it that way allows you to push the piston in more, its worked for me i the past.
Other than that, it might be leaky seals somewhere.
well tday ive annealed the copper washers and it seems like it might have made a minute differnce. still cant get pressure built up tho, altho its slightly more than before.
as for levers RF im usin the shorty levers i had on before. im now off to check if the levers from the tiger n sprint share the same part numbers.
yep they share the same lever
Ah, might want to check that those levers are getting a full stroke on the piston and also allowing the piston to come all the way back to let in the make up fluid. That would explain the issues you're experiencing.
took the lever off and tried it without but still no joy. had the lever pulled back all day but still feels spongy but there dont seem to be any air left in the system. :?
how do your brakes feel RF ?
Mine are good mate, stops on a sixpence!
I did a full rebuild on them after i painted them, polished the pistons and a full set of new seals.
Are you using the original Tiger master cylinder?
The Trophy/Sprint uses a different/bigger one, the original Tiger one will make the brakes feel spongy/wooden.
If you`ve done all suggested, a full caliper overhaul might be the way to go?
ive got the sprint master cylinder so thats all good.
tnite i maqde up a pressure bleeder thingy. wernt pretty but it worked. guess what :D still no brakes :x
im startin to think master cylinder seal kit. do you know what cylinder youve used RF ? theres 2 listed but im not sure what one i got. i think mines 5/8ths.
so until tmora n hopefully i can get a seal kit i still got no bike :cry:
I have never bled the Tiger brakes so far, but a trick we use with the Transalps is too reverse bleed them. Use a syringe or something and force the fluid in at the caliper and remove it with a turkey baster from the master cylinder. All the air wants to travel in the same direction so you're not fighting the flow. FWIW.
Yup, its the 5/8th one you want.
Have you had the calipers apart to check the pistons aren`t seized or seals leaking?
You haven`t got paint somewhere you shouldn`t have when you painted them?
You using the original Tiger lines with the splitter?
im usin the lines i had on there before. 2 seperate lines, no splitter. havnt had the calipers apart and was careful when i painted em. i think tmora ill take it all apart and check the calipers just to make sure and ive got me fingers crossed that lings has a master cylnder repair kit in stock.
gunna try your idea too night but with me home made pressure bleeder. might work better than a syringe
new master cylinder seal kit today. a genuine triumph part too :D guess what :?:
STILL NO POXY BRAKES :BangHead
You ain`t having a lot of luck lately mate :lol:
Only the calipers left to check then?
Pity i`m away for the meet this weekend or i would have come over and got in the way/tried to help!
thing is if i pressure it up with a syringe iget a lovely lever. take the syringe off n it stays like that for a while then slowly goes back t the bars. so there has to be air in it still somewhere ?
i cant see the p[roblem bein in the caliper tho as nuffin leaks out of em. so that makes me think the seals are ok. all the pistons move easy enough.
gunna try a few more things tmora n if that dont work im gunna throw all me toys out the pram :lol:
Sorry I was busy and should have posted this before.
Disconnect the hose at the callipers, plug it, I'm sure you can rig something up and it'll probably leak a bit but that's not a bad thing.
If you get good pressure its in the callipers! There isn't anything else :wink:
cheers sin :wink: ill give that a try later today. got me fingers crossed that it aint the calipers tho
well tried new copper washers no joy :cry: aint tried disconectin the calipers yet. cant find a way of bleedin the brakes without em bein on.
bein all serious now, im gettin proper pissed off with this. it shouldnt take this long to sort em out. if it carries on like this im gunna be takin it to dealer to get em bleed up
I checked my Triumph factory service manual on bleeding brakes and a found couple of things that might help you. These may be obvious but at this point it may be worth asking. If you have the master with adjustable lever it needs to be set to position 1. Also if you are bleeding by squeezing the lever, make sure that air is not getting sucked back in the bleed screw on release of the lever. They make bleeder hoses with check valves for this purpose.
I got nuthin else. Good luck!
:shock: Nippon, take a deep breath. Let's break out down into the componenta and innominate them one at a time.
Unbolt the horses at the calliper end. Put a bolt with washers through the banjo end to effectively blank off the outlet, I know you can find something to do that as I have seen your garage :wink: You probably won't get a complete seal but that's OK. Put safety glasses on, you don't wasn't that stuff in your eye.
Pump the lever, you should be able to figure out pretty quickly if you are being enough resistance and the piston is getting replenishment fluid.
If you do its in the callipers, if not look at the master cylinder and sort that first.
Are you sure you're connecting the houses to the correct ports on the callipers? Some callipers have multiple ports which might not nave the internal passages drilled as you are expecting, i.e. there might not be cross connections between the calliper halves. Blow through with air one at a time to check.
cheers nightrunner n sin. im off out in the garage now to have another play. ive not got the triumph adjustable levers on there but i do have other adjustable levers. never thought of movin the lever.
im gunna try that first sin, then im gunna try yours. his ideas cleaner :lol:
back with a progress report soon and hopefully a smile :D
I had a similar problem, turned out it was air leaking in around tired old copper washers. It is a cheap fix, worth trying.
Any joy yet Rybes?
Quote from: "Geoff W"I had a similar problem, turned out it was air leaking in around tired old copper washers. It is a cheap fix, worth trying.
But a leak that allows air in should also leak fluid out, and thus be easy to see. Now I did once have a car with rear-only anti-lock gizmo that was allowing air to be pulled in without leaking fluid. Kept bleeding and bleeding the rear brakes and the bubbles never stopped. I bypassed it and problem solved. But the Tiger has no such device. This is a toughy. Hope he gets it solved.
well looks like night runner was spot on :wink: cheers for that mate, idve never have thought of that. still a bit spongey but im gunna let it settle over a day or so n bleed it again jus t make sure its all clear.
Last time I bled them (about 2 months ago for braided hoses) I had to do the lever clamped back to the grip with a cable tie for 3 full days. :x
3 days :shock: