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1. Purify dust and dirt from the working brake cylinder. |
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2. Remove dustproof covers from each end of the working brake cylinder. |
| 3. Take both pistons with sealing rings from the brake cylinder. |
| 4. Check a condition of pistons and the brake cylinder for lack of wear, corrosion and other defects. |
| 5. Install sealing rings on the piston, grease them with pure brake fluid and install pistons in the brake cylinder. |
| 6. Establish dustproof caps. |