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2) Release nut (10). Disengage control (12). 3) Disconnect pipes (6) and (7) from elbow unions (4) and (9). Install blanking caps. 4) Remove valve (14). Retain bolts (11) and washers (2). Discard nuts (1). C. Installation of the landing gear emergency valve (Figure 201) 1) Position valve (14) on bracket (3). 2) Attach the valve with bolts (11), washers (2) and new nuts (1). 3) Remove the blanking caps and connect the two pipes (6) and (7). Torque - refer to 20-00-02. 4) Engage control (12) into the cable grip (13) - refer to 32-35-03. 5) Check the electrohydraulic generator level. WARNING : BEFORE ANY LANDING GEAR RETRACTION OR "NORMAL" OR "EMERGENCY" EXTENSION PROCEDURE, AND / OR LANDING GEAR CIRCUIT-BREAKER CLOSING, MAKE SURE THAT THE LANDING GEAR IMMEDIATE SURROUNDINGS ARE CLEAR (PERSONS OR THINGS). 6) Retract the landing gear and perform an emergency extension. 7) Push the emergency control and perform a normal cycle. 8) Make sure that there is no leak or seepage at the unions (5) and (8), pipes (6) and (7) and elbow unions (4) and (9). 9) Trace a reference mark with red paint on unions (5) and (8), elbow unions (4) and (9) and valve (14). 10) Check and complete the hydraulic fluid (TB 02-001) level if necessary. 11) Lower the aircraft to ground and remove the jacks - refer to 07-10-00. AAAA Validity : S / N 1 - 9999 32 _35_02 Page 201 (BA) JUN 01 1 - Nut 2 - Washer 3 - Bracket 4 - Elbow union 5 - Union 6 - Pipe 7 - Pipe 8 - Union 9 - Elbow union 10 - Nut 11 - Bolt 12 - Control 13 - Cable grip 14 - Valve Landing gear emergency valve - Removal / Installation Figure 201 "GERDES" valve D. Disassembly of the landing gear emergency valve (Figure 202) 1) Remove the landing gear emergency valve - refer to Paragraph 2.B. 2) Remove hinge pins (3) and (4) from the maneuver lever (2). 3) Remove the maneuver lever. 4) Remove the pin (6) equipped with its two sealing gaskets. NOTE : If valve 0-ring (8) is damaged, apply Service Bulletin 37. 5) Remove elbow unions (1). E. Assembly of the landing gear emergency valve (Figure 202) 1) Assemble elbow unions (1). 2) Coat the seals with hydraulic fluid (TB 02-001). Then introduce the pin (6) equipped with its 0-rings (7) and (8) into the valve body. 3) Position maneuver lever (2). Attach hinge pins (3) and (4). 4) Install the landing gear emergency valve - refer to Paragraph 2.C. AW Validity : S / N 1 - 9999 32-35 Page 203 02 (BA) JUN 01 1 - Elbow union |
