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| BRAKE INSTALLATION GUIDELINES | ||
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Use the Proper Brake Fluid — Improper brake fluid will ruin the seals in the brake system. Use only standard aircraft Mil-H-5606 red hydraulic fluid. Never use automotive brake fluid! Bleed the Brakes — The best method to fill and bleed aircraft brakes is from the bottom up. Loosely connect a 1/8" ID clear hose to the brake caliper bleeder screw from your brake fluid source. An oil can used exclusively for this purpose works well. Pump the oil can until the hose is full of fluid, with no air bubbles. Tightly secure the hose to the bleeder valve, while opening it a quarter turn. Pump fluid into the system until it fills the brake cylinder reservoir. (The reservoir filler or vent cap must be open during this process). Tighten the bleeder valve screw, remove the hose, and reseal the reservoir. Check your work by insuring that the reservoir is full and that you have a “hard pedal.” If you have a “soft-pedal,” pump the brakes several times. Many times that will fix the problem. If the problem persists, drain the fluid and repeat the above process. |
Tighten and Safety Wire the Brake Calipers — Torque the brake caliper bolts to 80 inch-pounds, and then safety wire. Seat the Brake Pads — These non-asbestos organic composition brake pads require a thin layer of glazed material at the lining friction surface in order to provide maximum braking performance. This glazed layer is produced by the heat generated during normal braking operations, and is maintained during the life of the lining. Since new brake pads do not have this layer, it must be created by the following process: 1. Heat the pads by "dragging the brakes" while taxiing at a slow speed with moderate power. Do not use maximum braking pressure. 2. Allow the brakes to cool for 5 - 10 minutes 3. Test the results at full static run-up. If the brakes hold, break-in is complete. If they fail to hold, repeat steps 1 and 2 until they do. |
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