|
曝光台 注意防骗 网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
juN40024 PROPELLER GOVERNOR ADJUSTMENT / TEST 1. ADJUSTMENT OF THE PROPELLER GOVERNOR (Figure 501) A. Tools and consumable materials - Stainless steel lockwire, dia. 0.032 in (0.8 mm) B. Procedure 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. 1) Remove the upper engine cowling - refer to 71-10-01. 2) Cut off lockwire and untighten jam nut (4). 3) Release governor (1) stop by unscrewing adjusting bolt (2). 4) Make sure that control lever (3) stops when positioning propeller lever to full low pitch ; if necessary, adjust the control - refer to 61-20-02. 5) Install the upper engine cowling. 6) Run the engine at 1200 RPM for about 5 minutes. 7) Increase engine RPM to full manifold pressure with the throttle lever. CAUTION : IF THE AIRCRAFT IS FITTED WITH SPECIAL NOISE LIMITATION OPTION OR NOISE REDUCTION OPTION, REFER TO PILOT'S OPERATING HANDBOOK TO KNOW RPM NUMBER. 8) Check on tachometer that the engine RPM is 2575 RPM (+ 50 ; - 0). If not, adjust the low pitch stop screw on the propeller hub - refer to 61-10-00. 9) When this parameter is correct, carefully pull the propeller lever so that the tachometer displays 2575 RPM (+ 0 ; - 20). 10) Keep the propeller lever in this position and shut down the engine ; remove the upper engine cowling. NOTE : At engine shutdown, it is necessary to maintain the propeller lever in its position ; then, lock the controls with the blocking knob. 11) Put adjusting bolt (2) in contact with control lever (3) stop. CAUTION : IF THE AIRCRAFT IS FITTED WITH SPECIAL NOISE LIMITATION OPTION OR NOISE REDUCTION OPTION, REFER TO PILOT'S OPERATING HANDBOOK TO KNOW RPM NUMBER. 12) Start the engine and check on tachometer that the engine RPM is 2575 RPM (+ 0 ; - 20) ; if necessary, repeat operations 3) and 9) to 12). 13) Once the rating of 2575 RPM (+ 0 ; - 20) is reached, lockwire adjusting bolt (2) and jam nut (4). 14) Make sure that the propeller lever is set to full low pitch stop ; if necessary, adjust the control - refer to 61-20-02. 15) Check that adjusting bolt (2) actuates before [about 0.2 in (5 mm)] the propeller lever stop. 16) With the engine running at 2000 RPM (propeller set to full low pitch), change twice to high pitch ; the RPM drop should be 500 RPM. 17) Install the upper engine cowling - refer to 71-10-01. NOTE : All the propeller governors must be overhauled at T.B.O. prescribed for the propeller to which they are associated. 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址：TB20 MAINTENANCE MANUAL 61 螺旋桨 TB20飞机维护手册(22) |
