2daMax
Active Member
Yes but the loosened is very little. If the pressure is insufficiently felt by the pressure sensor in the ABS system, it won't do the cycling.
ABS bleeding and failures
- Thread starter Skeezix
- Start date
2daMax
Active Member
OK an update to the rear pedal/ABS issue.
After 6 months, of having no issues, I had on 1 occasion did not ride the bike for 10 days, and the pedal got a little stuck but recovers and throws a ABS check light. I then did a 10X cycling and bleeding for the rear and about 3X for the front. So far no issues after sitting the bike for more than 10 days.
On another issue, I had been lazy with the clutch fluids where the lever doesn't actuate the slave pump. Adding salt to injury, the reservoir philips head screw got stripped and had to drill the head out. Thinking that the slave pump seals were gone, I just tried bleeding it to see if I can recover. Fortunately, it recovered back to normal. Lesson learn, clutch actuation are used more often than brakes and would require shorter bleed cycles.
It will be a yearly event to change brake and clutch fluids. And have purposely purchased 350ml size bottles instead of the 1L. Open bottles (but closed back) should be used not more than 1 year. One of my ABS issues and for the clutch was contaminating the fluids with old fluids. The corrosion factor accelerates exponentially.
After 6 months, of having no issues, I had on 1 occasion did not ride the bike for 10 days, and the pedal got a little stuck but recovers and throws a ABS check light. I then did a 10X cycling and bleeding for the rear and about 3X for the front. So far no issues after sitting the bike for more than 10 days.
On another issue, I had been lazy with the clutch fluids where the lever doesn't actuate the slave pump. Adding salt to injury, the reservoir philips head screw got stripped and had to drill the head out. Thinking that the slave pump seals were gone, I just tried bleeding it to see if I can recover. Fortunately, it recovered back to normal. Lesson learn, clutch actuation are used more often than brakes and would require shorter bleed cycles.
It will be a yearly event to change brake and clutch fluids. And have purposely purchased 350ml size bottles instead of the 1L. Open bottles (but closed back) should be used not more than 1 year. One of my ABS issues and for the clutch was contaminating the fluids with old fluids. The corrosion factor accelerates exponentially.
Boris
Well-Known Member
Front brake & clutch fluid master cylinders are JIS screws, not Phillips, ideally requiring a JIS screwdriver to undo.
2daMax
Active Member
I replaced the originals with Pozidriv since I have access to them, and the right size bit.
Hello all,
2012 S10 with 34k here and I bled my brakes all around last year before a big trip (it was due). I didn't do anything different than I usually do but I did run the rear reservoir dry but I thought I caught it before any air got in the system. On that trip I ended up getting a soft rear pedal and eventually no rear brakes. I tried bleeding a few times while on the trip only to end up with soft pedal and no rear brakes after a days ride several times. I ended up finishing the trip with no rear brakes.
I didn't know better on the trip to cycle the ABS pump. I do now and I've bled rears and cycled it 6 times and I haven't noticed any air in the lines when bleeding after that first (and subsequent) pump cycles.
Is the only real test to go out and ride and see what happens? Is the ABS activation what introduces air or just the linked brakes and the use of the front brake? How does one rule out the rear master cylinder?
BTW I have had the ABS reservoir compartment fill up with crap about 8 years ago and I had to tear apart the whole back half of the bike then to clean it out (I enlarged the drain holes then) while I was changing a bent subframe (don't ask). Ever since then the box has gotten dusty but not filled up.
A peculiar thing happens when I pump the rear brakes, it's like I can hear a whistling sound from the ABS pump area like something is stroking and moving air. I assume that is the internal pistons and the way dirt gets in the ABS pump?
The bikes been good to me and I have beaten it to death off road so throwing a $1,600 pump in it would be worth it to me but I'm not ready to fire the parts cannon just yet.
Is it true the 2014+ pump is backwards compatible with 2012?
Thanks for any advice!
2012 S10 with 34k here and I bled my brakes all around last year before a big trip (it was due). I didn't do anything different than I usually do but I did run the rear reservoir dry but I thought I caught it before any air got in the system. On that trip I ended up getting a soft rear pedal and eventually no rear brakes. I tried bleeding a few times while on the trip only to end up with soft pedal and no rear brakes after a days ride several times. I ended up finishing the trip with no rear brakes.
I didn't know better on the trip to cycle the ABS pump. I do now and I've bled rears and cycled it 6 times and I haven't noticed any air in the lines when bleeding after that first (and subsequent) pump cycles.
Is the only real test to go out and ride and see what happens? Is the ABS activation what introduces air or just the linked brakes and the use of the front brake? How does one rule out the rear master cylinder?
BTW I have had the ABS reservoir compartment fill up with crap about 8 years ago and I had to tear apart the whole back half of the bike then to clean it out (I enlarged the drain holes then) while I was changing a bent subframe (don't ask). Ever since then the box has gotten dusty but not filled up.
A peculiar thing happens when I pump the rear brakes, it's like I can hear a whistling sound from the ABS pump area like something is stroking and moving air. I assume that is the internal pistons and the way dirt gets in the ABS pump?
The bikes been good to me and I have beaten it to death off road so throwing a $1,600 pump in it would be worth it to me but I'm not ready to fire the parts cannon just yet.
Is it true the 2014+ pump is backwards compatible with 2012?
Thanks for any advice!
Last edited:
Cross post from another thread
paste begins:
Hello, I'm following up.
I bought a used, known good, ABS pumps from Mr. BR above and used it on my summer trip with great success. Man that is a pretty tough installation, a 10mm crows foot socket is a MUST.
While I was on my trip I mailed my original ABS pump to DIag Engine. The air freight cost me $75. I prepaid 408 Euro (about $450 USD). which included the return air freight. I did have trouble using a credit card with their site. I tried two cards that I have that don't have Foreign transaction fees but I was never able to get the cards to go through at checkout. Rather than deal with calling the vendor in France (language barrier and time zone difference) I used paypal with success. You are paying a slightly worse exchange rate with paypal as the FTF is "built-in" but it went through for me.
Within a few days of receipt DIag Engine had my rebuilt pump on its way back to me!
Now, I haven't installed the rebuilt one yet, but I have no reason to believe it doesn't work as designed. I'll install it over this winter as there is no urgency and I'll report back if something isn't right.
I highly recommend Diag Engine for this repair! I would definitely do this over a new pump from Yamaha!
Soft rear brake pedal woes…
Hey all I posted this in the sticky thread and it doesn’t appear to be showing up as a new post. TIA for any advice! Hello all, 2012 S10 with 34k here and I bled my brakes all around last year before a big trip (it was due). I didn't do anything different than I usually do but I did run the...
yamahasupertenere.com
paste begins:
Hello, I'm following up.
I bought a used, known good, ABS pumps from Mr. BR above and used it on my summer trip with great success. Man that is a pretty tough installation, a 10mm crows foot socket is a MUST.
While I was on my trip I mailed my original ABS pump to DIag Engine. The air freight cost me $75. I prepaid 408 Euro (about $450 USD). which included the return air freight. I did have trouble using a credit card with their site. I tried two cards that I have that don't have Foreign transaction fees but I was never able to get the cards to go through at checkout. Rather than deal with calling the vendor in France (language barrier and time zone difference) I used paypal with success. You are paying a slightly worse exchange rate with paypal as the FTF is "built-in" but it went through for me.
Within a few days of receipt DIag Engine had my rebuilt pump on its way back to me!
Now, I haven't installed the rebuilt one yet, but I have no reason to believe it doesn't work as designed. I'll install it over this winter as there is no urgency and I'll report back if something isn't right.
I highly recommend Diag Engine for this repair! I would definitely do this over a new pump from Yamaha!
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patrickg450
Well-Known Member
good to know, I still have my bad one.......
Mr. BR
Active Member
Very happy to hear that the ABS unit I sent you worked out! My original unit continues to be be error-free since I fixed my loose fuse issue.
I could stand to give the entire system another bleed but all good otherwise.
Mr. BR