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WARNING : APPLY THE MAINTENANCE PROCEDURE OF THE FUEL SYSTEM — REFER TO 28-00-00. 1) Remove the blanking plug, install a new seal (7), install injection pump (1) on the engine and support (10) on injection pump (1). Attach them with washers (4), nuts (3) and jam nuts (2) or with washers (4), new lockwashers (5) and nuts (3). 2) Torque nuts (3) - refer to 20-00-01. 3) Remove the blanking plugs, connect pipes (6) and (9) - refer to 20-00-02. 4) Install air inlet - refer to 71-60-00. 5) Connect and adjust throttle control (11) - refer to 76-10-01. 6) Connect and adjust mixture control (12) - refer to 76-10-03. 7) Set fuel selector to "LEFT" or "RIGHT" position. 8) Bleed the fuel system - refer to 12-11-02. CAUTION : MAKE SURE THAT THE SELECTED TANK CONTAINS FUEL BEFORE ACTUATING THE ELECTRIC PUMP. 9) Perform a leakage test with the fuel system pressurized - refer to 28-00-00. 10) Check for leaks. 11) Mark with a red paint line nuts of pipes (6) and (9), nuts (3) and, if installed, jam nuts (2). 12) Remove the drain pan. 13) Make sure all the tools and materials are removed and the work area is clean and free from debris. 14) Install the engine cowlings - refer to 71-10-01. 15) Adjust injection pump (1) - refer to Page 501. ADAA Validity : S / N 1 - 9999 73-20 Page sEp40042 01 (EA) 1 - Injection pump 2 - Jam nut 3 - Nut 4 - Washer 5 - Lockwasher 6 - Pipe 7 - Seal 8 - Stud 9 - Pipe 10 - Support 11 - Throttle control 12 - Mixture control Injection pump - Removal / Installation Figure 401 ADAA Validity : S / N 1 - 9999 73-20-01Page 403 (EA) SEP 02 PAGE INTENTIONALLY LEFT BLANK INJECTION PUMP ADJUSTMENT / TEST 1. IDLE ADJUSTMENT (Figure 501) A. Tools and consumable materials None B. Procedure 1) Perform a test run-up - refer to 05-30-02. 2) Set throttle control to idle position and check engine rotation speed. Idle value must be 750 RPM (+ 100 ; - 0). 3) Stop the engine - refer to 05-30-02. 4) If idle has to be adjusted, perform the following operations : a) Remove the engine cowlings - refer to 71-10-01. WARNING : PRIOR TO ANY OPERATION, ENSURE THAT THE ENGINE, EXHAUST PIPE AND MANIFOLDS ARE COLD. IF NOT, TAKE NECESSARY PRECAUTIONS TO AVOID SEVERE BURNS. WARNING : PRIOR TO ANY OPERATION, ENSURE THAT THE KEY IS REMOVED FROM MAGNETO SELECTOR AND THAT "MAIN SWITCH" IS OFF. IF AIRCRAFT IS EQUIPPED WITH DISCONNECT PLUG ON FIREWALL, DISCONNECT "MAGNETO DISCONNECT" PLUG AND CONNECT IT TO "GROUND MAGNETO FOR SERVICING" PLUG. b) Actuate idle adjustment screw (1). Screw idle adjustment screw (1) to increase RPM and unscrew it to reduce RPM. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 73 发动机燃油和控制 TB20飞机维护手册(11) |
