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Post by mak595 on Feb 22, 2020 20:05:01 GMT 1
Trying to bleed up the front brakes on my F1, its got the 4 pot triumph calipers, fazer M/C. bled them through and no lever at all, so replaced the M/C seals, swapped out the lines for a spare set, new washers etc, still nothing No leaks on the system i can see, not stripped the calipers but they look like new. Getting pissed off now, i must have bled hundreds of brakes over the years and not had this problem, only thing i can think of is replace all the caliper seals OR sack the whole thing off and go back to standard set up, problem is, i've only got a right hand caliper and no M/C Rant over Anyone else had issues with trumpet calipers ?
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Post by earthman on Feb 22, 2020 20:24:22 GMT 1
One trick that I have heard of, unbolting calipers and trying to get them higher than the brake lever/master whilst bleeding air from the system. I think the calipers were 6 pot ones in the video I watched, not Triumph ones.
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Post by panzermatt on Feb 22, 2020 20:30:45 GMT 1
ok ok calm down, calm down. i had the same issue. wrecked my head until my friend told me what to do. open the master cylinder, and very quickly pull the brake lever in, but only a tiny bit, in and out, you will see bubbles popping up into the master cylinder, keep doing this until no more come up. then bleed as normal. trust me this works.
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Post by panzermatt on Feb 22, 2020 20:32:33 GMT 1
the air is trapped just beyond the master cylinder.
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Post by midlifecrisisrd on Feb 22, 2020 20:33:07 GMT 1
As above
Took days to get it all out
If the master cylinder has a large air bubble in it this happens
Just keep tapping and partially squeezing the lever
You will get there
Steve
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Post by marsbar350 on Feb 22, 2020 20:52:20 GMT 1
double check you have all the crush washers fitted.ive missed one before and wouldn't bleed up tie your lever up overnight ive got a pair on my f2 hybrid .well worth persevering with
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Deleted
Deleted Member
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Post by Deleted on Feb 22, 2020 21:17:51 GMT 1
Takes 10 mins max to bleed brakes. No need to hang them from the ceiling, reverse pump fluid etc. etc.
Push the pads apart as far as possible to minimise the amount of air in the calipers Fill the master cylinder. Bleed the top then bottom banjo bolts Bleed from the bleed nipples using a pipe into an over flow bottle Bleed top and bottom banjo bolts Repeat the previous 2 steps until you have a firm lever Jobs done
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Post by sbscnor on Feb 22, 2020 21:21:22 GMT 1
Get a length of clear plastic tube, fit one end on the caliper fix the other end in the master cylinder making sure it's secure and immersed in to the brake fluid within the master cylinder so you have a fully closed circuit.
Release the calliper bleed nipple and pump the brake lever, top up the master cylinder as required. Used this method every time it's never failed me even with the Triumph calipers.
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Post by mak595 on Feb 22, 2020 21:27:08 GMT 1
Thanks guys, i'll have another go tomorrow....
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Post by oldelsieboy on Feb 23, 2020 9:09:50 GMT 1
Get a length of clear plastic tube, fit one end on the caliper fix the other end in the master cylinder making sure it's secure and immersed in to the brake fluid within the master cylinder so you have a fully closed circuit. Release the calliper bleed nipple and pump the brake lever, top up the master cylinder as required. Used this method every time it's never failed me even with the Triumph calipers. The "writebike" method, always use it, never fails.
OEB
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Post by chrisg on Feb 23, 2020 12:58:59 GMT 1
Several ways. I find that using a syringe and pumping fluid in from the open bleed nipple, always works for me. Tip: wrap a but of ptfe tape around the nipple to stop any fluid making its way out through the threads.
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Post by chrisg on Feb 23, 2020 13:07:41 GMT 1
Trying to bleed up the front brakes on my F1, its got the 4 pot triumph calipers, fazer M/C. bled them through and no lever at all, so replaced the M/C seals, swapped out the lines for a spare set, new washers etc, still nothing No leaks on the system i can see, not stripped the calipers but they look like new. Getting pissed off now, i must have bled hundreds of brakes over the years and not had this problem, only thing i can think of is replace all the caliper seals OR sack the whole thing off and go back to standard set up, problem is, i've only got a right hand caliper and no M/C Rant over Anyone else had issues with trumpet calipers ? Is the master cylinder assembly built up correctly? I had an issued with a rear master cylinder on my 400d being build up incorrectly and I resealed it and built it up the same way , wrong . I finally got a diagram of the assembly and that sorted it after much head scratching and swearing.
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Post by copper99 on Feb 23, 2020 21:15:16 GMT 1
Get a length of clear plastic tube, fit one end on the caliper fix the other end in the master cylinder making sure it's secure and immersed in to the brake fluid within the master cylinder so you have a fully closed circuit. Release the calliper bleed nipple and pump the brake lever, top up the master cylinder as required. Used this method every time it's never failed me even with the Triumph calipers. Thats a new one on me, will remember that as and when..
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Post by chrisg on Feb 23, 2020 21:29:16 GMT 1
Get a length of clear plastic tube, fit one end on the caliper fix the other end in the master cylinder making sure it's secure and immersed in to the brake fluid within the master cylinder so you have a fully closed circuit. Release the calliper bleed nipple and pump the brake lever, top up the master cylinder as required. Used this method every time it's never failed me even with the Triumph calipers. Thats a new one on me, will remember that as and when.. Not so sure. Any crap or small air bubbles will be fed back into the system.
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tomtom1
Thrash Merchant
Leeds
Posts: 355
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Post by tomtom1 on Feb 26, 2020 18:46:06 GMT 1
pump your lever 6 or 7 times, then with lever pulled into the bars clamp the hose with a hose clamp or if you don't have one, a pair of long nose mole grips with rag in the jaws so you don't mark / damage hose, then pump you lever it will go solid, then with the lever pulled release the grips, the lever will then pull all way to bars, with the lever into the bars move the grip further down the hose and repeat, when you get to the end of the hose do the same clamping thing but open the bleed nipple, idea is to clamp hose so no air goes up the hose only pressurised fluid going down the hose, hope all that makes sence 👍
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Post by mak595 on Feb 26, 2020 21:41:47 GMT 1
Thanks for the advice guys, I've found a standard M/C in my stash and sourced a standard L/H caliper so im going to go back to a standard set up, getting fed up with messing about, i'll take em off and bung them on ebay...
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Post by mak595 on Apr 8, 2020 16:11:53 GMT 1
Well, these brakes are still doing my nut in !!!
Standard calipers, stripped and rebuilt with new seals, pads etc NOS F1 brake lines with new copper washers standard m/C stripped and rebuilt with a genuine yammy piston/seal kit
I've bled them for a good hour and cant get any more air out of them, just clear fluid
Still no lever, if i screw the adjuster fully in, the brakes work but the lever pulls the m/C piston to the stop, there is no pressure.
I've seen my arse with them now, atm i've just cable tied the lever on, and i've leave that overnight to see if that help but i'm totally out of idea's now
when you bleed the system, where do you have the adjusting screw, full out, half way etc?
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Post by midlifecrisisrd on Apr 8, 2020 16:48:33 GMT 1
It will be air in the master cylinder
Easily identified by taking the cap off and gently squeeze the lever just and no more
You will see small bubbles coming up from the holes
Untill the air stops you will have no brake
Did front and rear the other night
Took the bleed nipples out and wrapped ptfe thread tape to the threads only (do not cover the hole)
Nip up both nipples gently
I get loads of tubing from work so I attach 4ft to each nipple, fill the master then open one nipple and suck.
When you get a good amount of fluid through close the nipple, open the other and suck on that side
I'm too tight to buy a vacuum bleeder kit 😁
Steve
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Post by stusco on Apr 8, 2020 17:00:54 GMT 1
Tap the lever just till you hear the click there will be small bubbles I bought a bleeder on drunken ebay I wasn’t impressed I prefer the big syringe and the tappy tappy method and the tie wrap over night
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Post by hjw on Apr 8, 2020 17:04:38 GMT 1
I have had success pump brake lever slowly a couple of times then when it’s fully in tie it up so the lever stays in. leave it overnight then check again.Hope this helps
Howard
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Post by mak595 on Apr 8, 2020 19:55:02 GMT 1
I'll have another go tomorrow, hopefully the zip tied lever might help overnight
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Post by veg on Apr 8, 2020 21:39:43 GMT 1
My ap Lockheed calliper took days to bleed they are notorious for it, forget vacuum bleeders etc it just takes time keep pumping as others have said then use cable tie or wire leave lever over night then keep repeating then when you get to the point of smashing the f**ker up with a lump hammer it’ll miraculously work, took my about 3 days.
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Post by JonW on Apr 9, 2020 2:15:36 GMT 1
I do use a vac bleeder and would t be without it but sometimes you do get systems that need more work. Assuming youve bled from the nipples then a succession of short sharp movements on the lever for few mins mins will bring up some of the bubbles and then leave it cabled tied. Works every time for me. I even cable tie the rear masters with ties overnight now, thru the hole in the plunger adjuster and looped up n over and around the body. works well. Do this over successive days to me sure its all out. You can reverse bleed as well, but Ive not had great results with that, just fluid all over the place when the syringe pops off the nipple lol.
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Post by mak595 on Apr 9, 2020 19:05:47 GMT 1
Had another go today, pumped the lever for about 20 mins and have now got some pressure, not fantastic but getting there. At least I'm on the right track and finally moving forward!!
I'll cable tie again overnight and have another go tomorrow. Not done this much wrist action since I was a teenager 😁
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Post by hjw on Apr 9, 2020 20:30:54 GMT 1
Glad to here your making some progress.
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Post by JonW on Apr 10, 2020 8:08:39 GMT 1
haha, yes youre getting there for sure now. couple of night tied to the bar and you'll be fine... er...
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Post by copper99 on Apr 10, 2020 18:53:22 GMT 1
Had a mare bleeding the brakes on my 500 today, couldnt get fluid down to the calipers (did try your tip PM), I rung a friend up to see if he had a vac bleeder I could borrow but he passed on a new (to me ) tip , crack open the banjos on both calipers until they start to weep, tighten up and bleed up from there, it worked straightaway for me...
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Post by wonkywheel on Apr 10, 2020 19:12:35 GMT 1
You’ll sort it. I have Triumph Calipers, they make a significant difference and with no dive issue. Not only, can I be a tad more aggressive approaching the twisties, I feel much more safer if an idiot pulls out in front of me. These callipers are worth the hassle.
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Post by copper99 on Apr 10, 2020 21:12:24 GMT 1
My ap Lockheed calliper took days to bleed they are notorious for it, forget vacuum bleeders etc it just takes time keep pumping as others have said then use cable tie or wire leave lever over night then keep repeating then when you get to the point of smashing the f**ker up with a lump hammer it’ll miraculously work, took my about 3 days. Sometimes I think theres no rhyme or reason to it. Back in Feb I fitted my new APs to the 350 and had them all bleed up and ready to go in around 20 minutes! One thing is for sure, from (most) women to brakes, persistence always overcomes resistance..
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Post by midlifecrisisrd on Apr 10, 2020 21:26:37 GMT 1
My ap Lockheed calliper took days to bleed they are notorious for it, forget vacuum bleeders etc it just takes time keep pumping as others have said then use cable tie or wire leave lever over night then keep repeating then when you get to the point of smashing the f**ker up with a lump hammer it’ll miraculously work, took my about 3 days. Sometimes I think theres no rhyme or reason to it. Back in Feb I fitted my new APs to the 350 and had them all bleed up and ready to go in around 20 minutes! One thing is for sure, from (most) women to brakes, persistence always overcomes resistance.. Brakes can't take out restraining orders 😬 Steve
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