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This am I finally got around to re-building the front brake calipers to my 07 as it had the original seals. On a good day, the front wheel, with a good decent spin might go 2 rotations. When wet, maybe 1 rotation.. Being their approx 5 years old, I figured their due and didn't want them dragging on a road trip burning up pads/disc's...
BTW, Yamaha calls for replacing the seals EVERY TWO YEARS.
I did clean them out about a year ago (original seals looked good) however they starting dragging some, especially after riding in the rain...
Several pistons were very happy in the bore and didn't want to come out but eventually did with the help of an air compressor, some paint mixing sticks (used as spacers to keep the pistons from flying out). BTW, you really couldn't tell the difference by feel or looking at the new seals vs the old seals
No corrosion/pitting, etc, assembly went smoother than dissassembly. Once bleed out and test ridden, I checked the "free spin".
With the new seals, I was now getting 4.5-5 full spins (same force)..
I suspect my pad life will be extended some as well as my MPG may improve slightly...
Buying all the seals, on-line for an 07 (4 piston pots each) was about $80.00 shipped to my door...
Something to check when doing basic maintainance and consider doing if there's excessive front wheel drag....
BTW, Yamaha calls for replacing the seals EVERY TWO YEARS.
I did clean them out about a year ago (original seals looked good) however they starting dragging some, especially after riding in the rain...
Several pistons were very happy in the bore and didn't want to come out but eventually did with the help of an air compressor, some paint mixing sticks (used as spacers to keep the pistons from flying out). BTW, you really couldn't tell the difference by feel or looking at the new seals vs the old seals
No corrosion/pitting, etc, assembly went smoother than dissassembly. Once bleed out and test ridden, I checked the "free spin".
With the new seals, I was now getting 4.5-5 full spins (same force)..
I suspect my pad life will be extended some as well as my MPG may improve slightly...
Buying all the seals, on-line for an 07 (4 piston pots each) was about $80.00 shipped to my door...
Something to check when doing basic maintainance and consider doing if there's excessive front wheel drag....