(b)
WEA RDR R/T 1
J. Do the weather radar operational and system tests (Ref 34-43-00).
EFFECTIVITY
ALL 01 Page 408 Sep 25/9434-43-13
WEATHER RADAR ANTENNA MOUNT - MAINTENANCE PRACTICES
___________________________________________________
1. General
_______
A. This subject has three tasks:
(1)
Weather Radar Antenna Mount Removal
(2)
Weather Radar Antenna Mount Installation
(3)
Weather Radar Antenna Mount Adjustment.
2. Weather Radar Antenna Mount Removal (Fig. 201)
___________________________________
A. General
(1) Do not remove the weather radar (WXR) antenna mount unless the approved tools are available to do the antenna mount alignment.
B. References
(1) AMM 34-43-03/401, Weather Radar Antenna
C. Procedure
(1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P7 Overhead Circuit Breaker Panel
1) WEA RDR R/T 1
2) WEA RDR R/T 2
3) WEA RDR IND 1
4) WEA RDR IND 2
(2)
Open the nose radome (Ref 34-43-03/401).
(3)
Remove the WXR antenna (Ref 34-43-03/401).
(4)
Remove the WXR antenna mount:
(a)
Remove the four pitch adjustment bolts, nuts and washers that hold the WXR antenna mount to the airplane support structure.
(b)
Remove the two pivot bolts, nuts and washers that hold the WXR antenna mount to the airplane support structure.
(c)
Remove the WXR antenna mount from the airplane support structure.
(d)
Keep the bolts, nuts and washers for installation of the WXR antenna mount.
3. Weather Radar Antenna Mount Installation (Fig. 201)
________________________________________
A. Reference
(1) AMM 34-43-03/401, Weather Radar Antenna
B. Procedure
(1)
Open these circuit breakers and attach DO -NOT-CLOSE tags:
(a) P7 Overhead Circuit Breaker Panel
1) WEA RDR R/T 1
2) WEA RDR R/T 2
3) WEA RDR IND 1
4) WEA RDR IND 2
(2)
Open the nose radome (Ref 34-43-03/401) if it is necessary.
(3)
Examine the mount and support assemblies of the WXR antenna mount for cracks or damage.
(4)
Install the WXR antenna mount:
(a)
Make sure that six sets of pitch adjustment and pitch pivot bolts, nuts and washers are available.
(b)
Make sure the five roll adjustment bolts and washers are correctly installed on the WXR antenna mount.
(c)
Install the WXR antenna mount on the airplane support structure.
EFFECTIVITY
ALL 01 Page 201 Oct 25/9734-43-19
D LOCATION REFERENCE TRANFER FLOOR MAIN DECK CSEE
29.50 LBL
RADOME ASEE
ANTENNA MOUNT
SEE B
STA 1480.00 STA 1460.00
TRANSFER PLATE
SEEE F
ROLL ADJUSTMENT BOLTS (QTY 5)
PITCH ADJUSTMENT
BOLTS
NUTS
WASHERS
(QTY 4)
PITCH PIVOT
BOLTS (QTY 2)
AIRPLANE
SUPPORT
STRUCTURE
ANTENNA MOUNT
B
NOSE RADOME
A
TRANSFER PLATE SUPPORT BOLTS (QTY 4)
SUPPORT ASSEMBLY
ROLL ADJUSTMENT BOLTS (QTY 5)
FWD
MOUNT ASSEMBLY
Weather Radar Antenna Mount Maintenance Practice
Figure 201 (Sheet 1)
EFFECTIVITY
ALL 01 Page 202 Oct 25/9734-43-19
C04507
REFFERENCE
FWD TRANFER
LOCATION
MAIN DECK
FLOOR WL 199.8
PRESSURE DECK
DIGITAL PROTRACTOR STIFFENERS
LBL
25.00
SCREWS AND STA
PLATE NUTS (QTY 3) 1465.60
REFERENCE
PITCH MEASUREMENT
C
DIGITAL PROTRACTOR
REFFERENCE TRANSFER LOCATION
MAIN DECK
FLOOR WL 199.8
REFFERENCE
PLATE
FWD
STA PRESSURE DECK
1465.60
STIFFENERS
SCREWS AND
LBL
NUTS (QTY 3)
25.00
ROLL MEASUREMENT
D
Weather Radar Antenna Mount Maintenance Practice Figure 201 (Sheet 2)
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：747飞机维护手册AMM CHAPTER 34 - NAVIGATION 第34章导航4(19)
