Quantcast h.  Throttle Leakage

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TM 9-2815-225-34&P 3-63.  FUEL PUMP TESTING AND CALIBRATION (Contd) LOCATION/ITEM ACTION REMARKS h.  Throttle Leakage NOTE This setting is important because it controls the deceleration time of the engine. 61. Fast button (25) and slow Depress and release until fuel button (23) pump speed is at 2100 rpm as indicated on the tachometer (7). 62. Flowmeter glass tube (38) Check fuel flow at exactly 470 pph. If balance has changed between rpm speed and fuel flow, it must be reset.  Also, selector valve (36) must be at ROTAMETER position. 63. Selector valve (36) Turn to LEAKAGE TEST position. 64. Count selector switch (17) Turn to OFF position. 65. Dumping lever (5) Pull out so that fuel will be retained in the No. 1 burette (6). 3-492


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