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Its bike service time in the awful weather we currently have....
We have some Hope V4s and Code brakes on our DH bikes. The bikes dont get used heavily and there is noticible brake drag when spinning the wheels.
It appears that the pistons are moving unevenly.
So to resolve this, my plan is remove pads, clean pistons with old toothbrush, put a drop of the silicon lube on each piston and push it back in and work it in and out until they are all free moving.
Any priblems with any of this? A better way available?
Thanks
Ian
Pretty much as you describe, although tend to use a cotton bud and the appropriate brake fluid (instead of lube).
The GMBN Tech vid covers it pretty well:
R3Pro also do a piston release tool which is really useful for freeing up individual pistons.
I've bought the release tool from R3Pro for the my Guide RE's (buy the Code one) and it works damned well, & competently eliminated the panic I'd push it out too far.. the hassle is pushing them back in straight, but even I managed not to **** that up. I was very impressed, great little piece of kit & encouraged me to clean the rear and my other bike (well I will soon, honest), I bought some pipe cleaners to get completely around the pistons..
IPA on a cotton bud, then follow up with a tiny drip of Fish line Stanchion lube, but yes, effectively what you plan.
Failing that, pop the pistons and deals out and put the two best moving ones opposite each other and the worst moving ones opposite each other. At least that way, you've not got two dragging on the same side of the rotor.
Thats ace. Thanks all. I have just ordered an R3Pro for my v4s and Codes.
Ace!
Silicone spray with a attached straw has worked for me for years without issue, with the pads and wheel out of the way obviously, made my own piston retractors out of a cheap trowel set with a bit of angle grinding.
The R3PRO tools make this a doddle, best tool I've bought for a long time.
I must admit, there's quite a few bits and bobs off that site that I could find use for.