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7) Unscrew nut (11). 8) Remove and retain screws (6), washers (9) and nuts (10). Remove pitot tube (5) and discard the nuts. 9) Blank off tube (7) and hose (12). 10) Retain reinforcement plate (8). 11) If pitot tube is to be replaced, remove and retain screws (2), washers (3) and mounting plate (4). 2. INSTALLATION OF PITOT TUBE (Figure 401) A. Tools and consumable materials None B. Procedure 1) Make sure: - main switch breaker is open, - warning sign prohibiting main switch-breaker operation is posted up, - heating control switch-breaker of pitot tube is open. AAAA Validity : Option Pre-MOD. 151, Standard Post-MOD. 151 34-11-08 Page 401 (BA) JUN 04 2) If necessary, fit pitot tube (5) with its mounting plate (4). Make sure the base is free of cracks. Attach it with screws (2) and washers (3). 3) Remove blanking caps and plugs. 4) Make sure mounting interfaces are serviceable and clean. 5) Position reinforcement plate (8). 6) Secure pitot tube (5), fitted with mounting plate (4), with screws (6), washers (9) and new nuts (10). CAUTION : USING A SPANNER, HOLD TUBE (7) INTEGRAL WITH PITOT TUBE WHEN SCREWING OR UNSCREWING THE ATTACHMENT NUT OF THE DYNAMIC PRESSURE TUBE. 7) Connect hose (12) to tube (7). Tighten nut (11). 8) Connect electrical connector (1). 9) Make sure all the tools and materials are removed and the work area is clean and free from debris. 10) Install access door No. 515. 11) Perform a leakage test of dynamic system - refer to 34-11-00. 12) Perform a test of pitot tube heating system - refer to 30-30-00. 13) When the pitot tube is cold, put the protection cover on it. AAAA Validity : Option Pre-MOD. 151, Standard Post-MOD. 151 34-11 Page 402 08 (BA) JUN 04 1 - Electrical connector 2 - Screw 3 - Washer 4 - Mounting plate 5 - Pitot tube 6 - Screw 7 - Tube 8 - Reinforcement plate 9 - Washer 10 - Nut 11 - Nut 12 - Hose 1430000DAAAJVZ4200 Pitot tube - Removal / Installation |
