S 766-004
(2)
Measure the resistance at each antenna coupler mount (Fig. 601) as follows (SWPM 20-20-00):
(a)
The RF center conductor of the antenna coupler mount to the antenna coupler mount frame. 1) Make sure the resistance is 10 milliohms or less.
(b)
The RF center conductor of the antenna coupler mount to the front spar. 1) Make sure the resistance is 10 milliohms or less.
(3)
Install the HF antenna coupler(s) (AMM 23-11-61/401).
S 426-003
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
HF Antenna Bonding Check
Figure 601
E02679
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
HF COMMUNICATION ANTENNA COUPLER - REMOVAL/INSTALLATION
_______________________________________________________
1. General_______
A. This procedure has these tasks:
(1)
A removal of the HF communication antenna coupler
(2)
An installation of the HF communication antenna coupler.
B. The HF communication antenna coupler is installed in the vertical stabilizer near station 1007.
C. Do this procedure for the applicable HF antenna coupler.
TASK 23-11-61-004-001
2. HF Communication Antenna Coupler Removal (Fig. 401)________________________________________
A. References
(1)
AMM 12-31-51/201, Fin and Rudder Access Doors and Panels
(2)
AMM 20-10-07/201, Electrical/Electronic Black Box
(3)
AMM 24-22-00/201, Electrical Power - Manual Control
B. Access
(1)
Location Zone
706 Vertical Stabilizer
(2)
Access Panel
9572 Access Door Leading Edge - Left
9573 Access Door Leading Edge - Right
C. Prepare for HF Antenna Coupler Removal (Figure 401)
S 864-036
CAUTION:_______YOU MUST PREPARE THE HF ANTENNA COUPLER FOR THE REMOVAL. IF NOT, INTERNAL PARTS ARE EASILY DAMAGED WHEN YOU MOVE THE COMPONENT.
(1) Make sure the applicable circuit breakers are closed:
(a)
P18 Circuit Breaker Panel
1) C839, HF-1 AC
2) C346, HF-1 DC
(b)
P6 Circuit Breaker Panel
1) C857, HF-2 AC (if installed)
2) C477, HF-2 DC
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
HF Antenna Coupler Installation
Figure 401
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A
737-300/400/500MAINTENANCE MANUAL
S 864-020
(2) Supply the electrical power (AMM 24-22-00/201).
S 864-032
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