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10 4.15 Keep the area between dustproof seal and caliper housing dry. DO NOT contact the brake cylinder paste or brake fluid in order to ensure the proper position of dustproof seal.
4.16 Secure the brake piston with the reinforcement parts which is sold in market, and slightly press it to the dustproof seal. Apply the compressed air (max. 3.0Bar) to blow the dustproof seal, and then cover the piston with a ring. CAUTION: IMMERSE THE DUSTPROOF SEAL AND PISTON WITH THE BRAKE FLUID TO MAKE THE SEAL MORE EASILY THROUGH.
4.17(Brake disc check) Check the thickness of brake disc. If below the min. thickness, replace it. CAUTION: Replace two brake discs on the same axle at the same time. Replace the friction lining at the same time when replacing it with a new brake disc.
4.18 Check the max brake disc face circular runout with a dial gauge. If the runout exceeds 0.03 mm, please replace it. (Also machine the disc to satisfy the max circular runout under the premise of ensurance of brake disc thickness.)
4.19 Install the other parts according to Removal Step.
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