(4)
Install the antenna pedestal:
S 424-188
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WARNING: DURING AN ANTENNA PEDESTAL INSTALLATION, USE TWO PERSONS
_______ AND A SAFELY INSTALLED WORKSTAND. THE ANTENNA PEDESTAL WEIGHS APPROXIMATELY 20 POUNDS.
BE CAREFUL WITH THE PEDESTAL DURING INSTALLATION. CAREFULLY INSTALL THE ANTENNA PEDESTAL TO PREVENT INJURY TO YOU OR CAUSE DAMAGE TO THE ANTENNA PEDESTAL.
CAUTION: OBEY THE NO-HANDHOLD PLACARD ON THE ANTENNA PEDESTAL
_______ WAVEGUIDE. DAMAGE TO THE ANTENNA WILL OCCUR WHEN THE PEDESTAL WAVEGUIDE IS USED TO HOLD THE ANTENNA.
CAUTION: MAKE SURE A GOOD GASKET IS INSTALLED BETWEEN THE WAVEGUIDE
_______ ON THE ANTENNA DRIVE ASSEMBLY AND THE AIRPLANE WAVEGUIDE. A DAMAGED GASKET OR NO GASKET WILL POSSIBLY CAUSE ANTENNA DAMAGE.
(a)
Put the antenna pedestal on the two top bolts on the antenna base.
(b)
Put the two lower bolts through the antenna pedestal to the antenna base.
(c)
Tighten each of the four mount bolts between 220-240
inch-pounds.
(d)
If the antenna mounting bolts have a drilled hole, Put double twisted lockwire between each of the four antenna mount bolts and the antenna support assemblies (AMM 20-10-44/401).
(e)
Connect waveguide section 1 to the antenna pedestal with the waveguide quick-disconnect.
NOTE: Make sure you install the O-ring gasket.
____
(f) Connect the airplane electrical connector to the antenna pedestal connector.
S 434-189
(5) Install the flat plate (Ref 34-41-11/401).
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(6) S 764-212Do the electrical bonding test between the airplane structure and the weather radar antenna (SWPM 20-20-00).
(7) S 864-247Supply electrical power (Ref 24-22-00/201).
(8) S 864-192Remove the DO-NOT-CLOSE tag and close this circuit breaker: (a) P6 Load Control Center - Right 1) WEATHER RADAR R/T
S 714-196
(9) Do these tests for the weather radar system (Ref 34-41-02/501).
(a)
Operational Test
(b)
Antenna Tilt Test
(c)
Stabilization Test
S 864-202
(10)
If electrical power is not necessary, do this task to remove electrical power: Manual Control (AMM 24-22-00/201).
S 434-203
(11)
Disengage the support rods that hold the radome open.
S 434-204
(12)
Close the radome.
S 434-205
(13)
Tighten the screws that attach the radome to the fuselage.
S 864-060
(14)
Remove electrical power if it is not necessary (Ref 24-22-00/201).
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WEATHER RADAR WAVEGUIDE - REMOVAL/INSTALLATION
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