(a)
Resolution: 0.01 degrees (0 to 10 degrees)
(b)
Accuracy: | 0.05 degrees (0 to 10 degrees)
(c)
Repeatability: | 0.05 degrees
(5)
KELL STROM PRO 3600; Do not use the digital protractor if a LO BAT message is shown.
(6)
LUCUS ANGLE STAR DP-60; Do not use the digital protractor if a LO BAT message is shown.
B. Equipment
(1)
G34004-17 Adjustment Equipment - Weather Radar
Antenna Mount (Recommended)
(2)
G34004-11 Adjustment Equipment - Weather Radar Antenna
Mount (Alternative)
(a)
KS6005 Digital Protractor (recommended)
Kerr Strom Pro 3600
(b)
DP-60 Digital Protractor (alternative)
Lucus Angle Star
(3)
Lint-free dry cloth
C. References
(1)
AMM 25-25-01/401, Passenger Seat
(2)
AMM 53-21-02/401, Main And Upper Deck Floor
(3)
AMM 53-52-01/201, Nose Radome
D. Access
(1) Location Zones
111 Radome
251 Passenger Cabin
E. Procedure
S 862-014
(1)
Open these circuit breaker and attach DO-NOT-CLOSE tags:
(a) P7 Overhead Circuit Breaker Panel
1) 7C7, WXR L RT
2) 7C19, WXR R RT
(2)
Open the nose radome (AMM 53-52-01/201) if it is necessary.
S 012-024
(3)
Remove the equipment that follows to get to the reference transfer location as shown in Fig. 201:
S 012-015
(a) Remove the passenger seats (AMM 25-25-01/401).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
(b) Remove the floor panels (AMM 53-21-02/401).
S 482-017
(4) Install the reference transfer plate.
NOTE: For the Kell Strom Pro 3600 digital protractor, use in one
____ mode, either the standard reference or alternate reference (ALT -0-) mode, through the entire adjustment.
The procedure that follows is written in the standard raference mode of operation.
NOTE: For the Lucus Angle Star DP-60 digital protractor, use in one
____ mode, either the usual or alternate reference (ALT REF) mode, through the entire adjustment.
Use the same measure scale through the full adjustment. The procedure that follows is written in the usual mode of operation.
(a)
Find the reference transfer location between STA 1460 to 1480 at LBL 20.50 to 29.50.
(b)
Make clean the top and bottom surfaces of the reference plate with a lint-free dry cloth.
(c)
Make clean the reference transfer points on the pressure deck stiffeners with a lint-free dry cloth.
(d)
Install the G34004 reference plate to the reference transfer points on the pressure deck stiffeners.
(e)
Attach the reference plate to the reference transfer points with three screws and nuts.
(f)
Torque the screws from 60 to 80 pound-inches.
S 482-019
(5) Install the G34004 transfer plate on the WXR antenna mount at the nose radome:
(a)
Loosen the top left and right roll adjustment bolts on the WXR antenna mount.
(b)
Do not loosen the top center or the two bottom roll adjustment bolts.
(c)
Install the two top support bolts and washers into the WXR antenna mount two top threaded holes from the G34004 transfer plate.
NOTE: The support bolts and washers used with the WXR antenna
____ installation can be used in place of the G34004 bolts.
(d)
Install the G34004 transfer plate on the two top support bolts.
(e)
Install the two bottom support bolts through the transfer plate into the WXR antenna mount.
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