Dear RC4, once the caliper is out of the bike, you must open it, unscrewing the two screws blocking the two parts.You will find a little hole connecting the two parts. Blow air in these holes, and close with your finger the oil inner (only on one side...). Once the pistons are out, check theme, and the seals. If they are not damage, you do not need to replace theme. I hope you could understand me... sorry for my English... Have a nice day.
The pistons must move out for 2 cm. Take the caliper off the bike and open it. Use compressed air to take the pistons off and check them, there must no have sign of corrosion. Clean with white petroleum, and put some grease (without metal inside...there is also a specific one from ATE) on the orings.
4rt rear brake bleeding "trick"
in Montesa
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