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Post by r3dster on Jul 1, 2019 18:57:29 GMT -6
Installed a radial pump from a gixxer 750 with steel braided line on my 2015 gsr/gsxs750 ABS...
It is abit better than stock...but the improvements was not as what i was expecting...calipers remains stock. I didnt expect to get the same feel as radial calipers..but this is too crappy...bleeding was done as how all other bikes would. Am i doing something wrong? Is there any specific way to bleed with ABS? or the brakes are just born to be made crappy? It feels like theres air in the system...but after hours of checking and bleeding...there isnt any...what am i missing here...
Hope someone could shine some light to address this...thanks in advance!
Cheers
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Post by keenan121 on Jul 1, 2019 19:56:19 GMT -6
Idk about our bikes but on any vehicle I've had brakes serviced the techs have to activate the abs to bleed it properly.
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Post by 850t5m on Jul 1, 2019 20:51:20 GMT -6
Idk about our bikes but on any vehicle I've had brakes serviced the techs have to activate the abs to bleed it properly. Yup, I heard the same for cars Idk how to safely get the ABS pumping on a bike tho |
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Post by r3dster on Jul 2, 2019 2:45:06 GMT -6
I did some research online...all of the information i get is that it bleeds just the same as bikes without abs...some high end would require the abs to be bled using a scan tool...so the question is...is ours a high end bike? Hehehe
Dang it...head cracking time
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Post by internalcombust on Jul 3, 2019 5:58:37 GMT -6
Did you try bleeding them from the bottom up? I go that way with stubborn systems. You just need a large plastic syringe and the right size tubing. Just push the fluid up from the bottom.
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Post by r3dster on Jul 3, 2019 17:21:39 GMT -6
Wont it damage the master cylinder seals? I've seen it being done. But....i just worry the seals inside would pop. I'll study about it more just to get some confidence that it would be fine. Hehehe
On the other hand, i saw a post in the 1000 group saying that the brake caliper pistons arent moving as how it should be. So a little scrub with brake cleaner and toothbrush might help. That would be an option as well
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steve
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Posts: 15
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Post by steve on Jul 4, 2019 4:51:24 GMT -6
There is a service manual for 15.- 16 bikes on the home page
I would look there first to see if you have to activate abs to bleed
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Post by r3dster on Jul 4, 2019 7:56:52 GMT -6
Nothing there. Just plain standard bleeding procedure
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Post by r3dster on Jul 8, 2019 5:33:59 GMT -6
So i had some ideas up my sleeve after some research. Did a few things over the weekend.
1) rode the bike at a slow speed and jammed the brakes to force the ABS to work for a few times.
2) removed the calipers, brush off the brake dust and cleaned up the pins. (Noticed that there were some rust at the base of the pin) Grease it up with fresh grease.
3) Bled the system. Altho i did not remove any of the lines, there were significant amount of bubbles coming out. (The system was bled to perfection before this. im assuming that after the ABS actuated several times, it sort of pushed out trapped air in the pump?)
Now, it feels a whole lot better. Much, much better. Lever travel is significantly shorter with better braking feel. Confidence level bumped up big time. I can't confirm which step made it better because i decided to force run the pump, clean the calipers, clear out the rust and grease it up. Did it all at one go.
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Post by internalcombust on Jul 8, 2019 14:35:52 GMT -6
Glad you got it sorted out.
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