0069 00TM 1-6625-724-13&P0069 00-36l.Press DO when the aircraft is stable at the highlighted selection. Verify that the aircraft is at the required TestState and press DO again. The AVA will acquire No. 1 engine vibration data and return to the selection menu.m. Shut down No. 1 engine and start and run No. 2 engine at 100% Nr, flat pitch.NOTENo. 1 engine must not be running during the No. 2engine output shaft vibration level check. No. 2 enginemust be run at 100% for five minutes prior to ameasurement being taken.n.Verify that Test State CKENG2 is highlighted.o.Press DO when the aircraft is stable at the highlighted selection. Verify that the aircraft is at the required TestState and press DO again. The AVA will acquire No. 2 engine vibration data and return to the selection menu.p.Verify that Test State OILCLR is highlighted.q.Press DO to begin oil cooler vibration testing. Verify that the aircraft is at the required Test State and pressDOagain. The AVA will acquire oil cooler vibration data.r.After the measurement is completed, press DO on Finish, then press DO on "Main Menu".s.Shut down No. 2 engine.t.Enter the Display mode by pressing F2.u.The Display mode menu is displayed. Use cursor keys to highlight Summary Displays, and then press DO.v.The Select Summary Display menu is displayed. Use cursor keys to highlight Engine 1 drive shaft, then pressDO.w. PEAK VIBRATION for Engine 1 drive shaft is displayed. Record the value.x.Press QUIT.y.The Select Summary Display menu is displayed. Use cursor keys to highlight Engine 2 drive shaft, then pressDO.z.PEAK VIBRATION for Engine 2 drive shaft is displayed. Record the value.aa. Press QUIT.bb. The Select Summary Display menu is displayed. Use cursor keys to highlight Oil Cooler Shaft Vert., thenpress DO.cc. PEAK VIBRATION for Vert. Oil Cooler Shaft is displayed. Record the value.dd. Press QUIT.ee. The Select Summary Display menu is displayed. Use cursor keys to highlight Oil Cooler Shaft F/A, then pressDO.ff.PEAK VIBRATION for F/A Oil Cooler Shaft is displayed. Record the value.gg. Press QUIT.hh. The Select Summary Display menu is displayed.ii.For all models of the UH-60 helicopter, except UH60L helicopters and "A" model helicopters with balancing kitinstalled: if engine output shaft vibration levels (cursor readouts) for both engines are 1.3 ips or less, theaircraft is acceptable and the accelerometers and brackets can be removed from the input models. If anengine output shaft vibration level is greater than 1.3 ips, perform procedure 4: Engine Output Shaft Rotationfor that engine. (Engine output shaft may be disconnected and rotated 120 degrees [one bolt hole] withrespect to the input module flange, three orientations are possible).jj.If either vertical or fore-aft oil cooler vibration is greater than 1.0 ips, perform procedure 5: Oil Cooler VibrationAdjustments.
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