Engine Ground Testing. Test Of Flight, Navigation And Radio Equipment, Autopilot And Tail Rotor Pitch Limit System - Kazan Helicopters Mi-17-1V Flight Manual

M.. -17-1B. Flight manual
increments to ensure pumping of the AMr-1 0 hydraulic fluid through
the system for the purpose of its warming up.
Note: In the course of the engines starting with the MA.!N HYD
SYSTEM (OCHOBHArl rVl.QPOCVlCTEMA) switch ON, the
auxiliary hydraulic system may operate instead of the main
hydraulic system. In this case, before clearing the main hy-
draulic system trouble, depress the AUX SYS OFF (OTKJl.
.QY61lVlP) button on the central subpanel of the pilots' elec-
trical control panel and keep it depressed until the MAIN
SYS ON (OCHOBH BKllf04EHA) annunciator comes on
and the AUX SYS ON (.QY61lVlP BKllf04EHA) annunciator
goes out.
(c) Make sure that with the flight controls being moved the main hy-
draulic system pressure varies within the limits of 45 ± 3 to
65~~
kgf/cm
2
and the auxiliary hydraulic system pressure is zero as
read by the pressure gauge and the MAIN SYS ON (OCHOBH.
BKJ1f04EHA) annunciator illuminates.
(d) Set the MAIN HYD SYSTEM (OCHOBH. rVl.QPOCVlCTEMA) switch
to OFF (BbIKll) and make sure that the AUX SYS ON (.QY61lVlP.
BKJ1f04EHA) annunciator comes on and the MAIN SYS ON
(OCHOBH BKllf04EHA) annunciator goes out, the auxiliary hy-
draulic system pressure rises rapidly and varies within the limits of
45
±
3 to
65~~
kgf/cm
2
with the flight controls deflected, the main
hydraulic system pressure remains constant within the limits of
45 ± 3 to
65~~
kgf/cm
2
.
(e) Select the main hydraulic system and make sure the MAIN SYS ON
(OCHOBH BKllf04EHA) annunciator comes on, the main hydraulic
system pressure remains within the above limits, the AUX SYS ON
(.QY61lVlP. BKllf04EHA) annunciator goes out and the auxiliary hy-
draulic system pressure drops to zero.
Note. After switching on the MAIN HYD SYSTEM (OCHOBH.
rVl.QPOCVlC-TYMA) switch select the main hYclraulic: sYs-
tem by depression of the AUX SYS OFF (OTKll .
.QY61lVlP) button and keeping it depressed until the MAIN
SYS ON (OCHOBH BKllf04EHA) annunciator comes on
and the AUX SYS ON (.QY61lVlP. BKllf04EHA) annuncia-
tor goes out.
When testing the hydraulic systems observe the annunciators to
make sure that the PVl-65 information reporting system issues cor-
rect voice messages.
With tI1egroundpbWer souiceconneded,swifChOriandtest the
aircraft equipment. If the ground power source is not available use
the 115 VAC inverters (With the APU operating), or perform these
tests after cutting the AC generators in.
3.8. Engine ground testing. Test of flight, navigation and radio equipment, autopilot
and tail rotor pitch limit system
(1) Make sure that the engines and main gearbox are warmed up and all the
3-20