3–14. PARKING BRAKE HANDLE – RETRACTS WHEN BRAKES ARE SET TO PARK 3

TM 1-1520-238-T-4 3–31 3–14. PARKING BRAKE HANDLE – RETRACTS WHEN BRAKES ARE SET TO PARK 3–14 (BRAKES DO NOT SET) Tools: Nomenclature Part Number Tool Kit, Aircraft SC518099CLA01 Mechanic’s Jack, Hydraulic Axle, MIL-J-26013 5-Ton (2) Personnel Required: 67R Attack Helicopter Repairer One person to assist References: TM 1-1520-238-23 NOTE Ensure that parking brake is released prior to proceeding. 1. Visually inspect parking brake cable assembly and spring. Is cable assembly or spring bent or broken? YES Replace cable assembly and/or spring (TM 1-1520-238-23). NO Go to step 2. 2. Pull parking brake handle to full travel and observe parking brake valve lever. Does parking brake valve lever fully travel from stop to stop? YES Go to step 3. NO Adjust brake cable clevis at parking brake valve to obtain full travel of parking brake lever (TM 1-1520-238-23). 3. Apply and maintain pressure on pilot left directional control pedal. Can left wheel assembly be rotated? YES Service and bleed brake system (TM 1-1520-238-23). NO Go to step 4. 4. Apply and maintain pressure on pilot right directional control pedal. Can right wheel assembly be rotated? YES Service and bleed brake assembly (TM 1-1520-238-23). NO Go to step 5. 5. Apply and maintain pressure on both left and right pilot directional control pedals. Pull parking brake handle and observe parking brake valve lever. Does parking brake release pin protrude out to parking brake lock lever? YES Go to step 6. NO Replace parking brake valve (TM 1-1520-238-23). 6. Release directional control pedal and brake handle. Does parking brake valve lever lock to park position? YES Go to paragraph 3–10. NO Go to step 7. 7. Check release pin. Is release pin sheared or broken? YES Replace parking brake valve (TM 1-1520-238-23). NO Go to step 8. 8. Check parking brake valve lever. Is lever loose on parking brake valve shaft? YES Tighten screw of parking brake lever (TM 1-1520-238-23). NO Go to paragraph 3–10. END OF TASK