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19) Bond carpet to the R.H. pedestal side using adhesive (TB 08-907). 20) Install the R.H. front seat - refer to 25-11-00. ABAB Validity : S / N 731 - 9999 28-20-04Page 403 (CA) SEP 02 1 - Screw 2 - Control knob 3 - Microswitch 4 - Bolt 5 - Washer 6 - Cam assembly 7 - Shaft 8 - Bolt 9 - Washer 10 - Nut 11 - Small gear 12 - Support 13 - Bolt 14 - Washer 15 - Washer 16 - Circlip 17 - Washer 18 - Nut 19 - Tube 20 - Bolt 21 - Support 22 - Shaft 23 - Gear support 24 - Large gear 25 - Washer 26 - Nut 27 - Screw 28 - Washer 29 - Bolt 30 - Knob support Fuel selector - Removal / Installation Key to Figure 401 (1/2) ABAB Validity : S / N 731 - 9999 28 20 04 Page 404 (CA) SEP 02 Fuel selector - Removal / Installation Figure 401 (1/2) ABAB Validity : S / N 731 - 9999 28_20_04 (CAS Page sEp40025 Fuel selector - Removal / installation Figure 401 (2/2) ABAB Validity : S / N 731 - 9999 28-20-04 Page 406 (CA) SEP 02 CHECK VALVE REMOVAL / INSTALLATION WARNING : OBEY THE SAFETY PRECAUTIONS DESCRIBED IN 28-00-00. 1. REMOVAL OF THE CHECK VALVE (Figure 401) A. Tools and consumable materials - Drain pan 0.5 US Gal (2 liters) - Blanking caps B. Procedure WARNING : APPLY THE MAINTENANCE PROCEDURE OF THE FUEL SYSTEM — REFER TO 28-00-00. 1) Open main switch-breaker. 2) Set the fuel selector to "CLOSED" position. 3) Remove the engine cowlings - refer to 71-10-01. 4) Put a drain pan beneath fuel filter. 5) Drain the fuel system in the fuselage - refer to 12-11-02. 6) Disconnect tube (2). Blank off. 7) Disconnect tube (6) from union (7) and retain check valve (8). Blank off. 8) If necessary, remove unions (7) and (9) from check valve (8) and discard the seals. 9) Check the tubes for condition and replace them if necessary. 2. INSTALLATION OF THE CHECK VALVE (Figure 401) A. Tools and consumable materials - Red paint B. Procedure WARNING : APPLY THE MAINTENANCE PROCEDURE OF THE FUEL SYSTEM — REFER TO 28-00-00. 1) If removed, install unions (7) and (9) fitted with new seals on check valve (8). NOTE : Check that the seals are correctly centered between check valve (8) and unions (7) and (9). CAUTION : OBSERVE THE MANDATORY INSTALLATION DIRECTION OF THE CHECK VALVE. THE ARROW MUST BE IN THE FUEL FLOW DIRECTION. 2) Install check valve (8). 3) Remove the blanking caps and connect tubes (2) and (6) - refer to 20-00-02. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 28 FUEL TB20飞机维护手册 燃油(34) |
