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B53080
A
747-400
MAINTENANCE MANUAL
REFFERENCE TRANFER LOCATION
MAIN DECK FLOOR WL 199.8
PRESSURE DECK DIGITAL PROTRACTOR
STIFFENERS
LBL
25.00
FWD
SCREWS AND STAREFERENCE NUTS (QTY 3) 1465.60
PLATE
PITCH MEASUREMENT
C
DIGITAL
PROTRACTOR
REFFERENCE TRANSFER LOCATION
MAIN DECK FLOOR WL 199.8
REFFERENCE
PLATE
STA
PRESSURE DECK
1465.60
STIFFENERS
FWD
SCREWS AND
LBL
NUTS (QTY 3)
25.00
ROLL MEASUREMENT
D
Weather Radar Antenna Mount Maintenance Practice Figure 201 (Sheet 2)
B53295
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A
747-400
MAINTENANCE MANUAL
ROLL TRANSFER
Weather Radar Antenna Mount Maintenance Practice
Figure 201 (Sheet 3)
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B53307
A
747-400 MAINTENANCE MANUAL
S 022-009
(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.
(d)
Install the four pitch adjustment bolts with washers and nuts through the support assembly and the airplane support structure.
(e)
Install the two pivot bolts with washers and nuts through the support assembly and airplane support structure.
(f)
Lightly tighten the six-pitch bolts.
S 722-010
(5)
Do the weather radar antenna mount adjustment task
(AMM 34-43-09/201).
S 412-011
(6)
Install the WXR antenna (AMM 34-43-03/401).
S 412-012
(7)
Close the nose radome (AMM 53-52-01/201).
TASK 34-43-09-732-031
4. Weather Radar Antenna Mount Adjustment (Fig. 201)______________________________________
A. General
(1)
When this adjustment is done, the airplane must be in a position that is as level as possible.
(2)
During moderate or high wind conditions the airplane must be put in a hanger so wind gusts do not affect the adjustment.
(3)
Keep a minimum number of maintenance persons on the airplane when this adjustment is done.
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MAINTENANCE MANUAL
(4)
The digital protractor is used as part of the G34004 adjustment equipment. If an alternate digital protractor is used, make sure the resolution, accuracy and repeatibility is the same or better as the specifications listed below:
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