WHEEL
TRUCK
LUGS
CLAMP,
SCREW
45` ELBOW
NUT PROTECTIVE COVER
NUT, WASHER (3 LOCATIONS)
CLIP, BLOCK
AFT PROTECTIVE COVER (FACEPLATE REMOVED)
B
Aft Load Sensor Protective Cover
Figure 202
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MAINTENANCE MANUAL
WHEEL TRUCK LUGS
FORWARD PROTECTIVE COVER
AFT PROTECTIVE COVER
Protective Cover Positions
Figure 203
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F. Access
(1) Location Zones
735/736 Wing Landing Gear
755/756 Body Landing Gear
G. Shim Installation
S 822-014
(1) Install the shims (AMM 31-41-05/401).
TASK 31-41-05-422-015
4. Load Sensor Installation (Fig. 205)
________________________
A. General
(1)
The load sensor for the single WBS are installed on the top of the wheel truck lugs. Protective covers and shims on the wheel truck lugs are attached before the load sensors are installed.
(2)
Each load sensor location is assigned an identification number from 1 to 16 (Table 1). The sensor identification number is entered in the weight and balance computer (WBC).
(3)
After the installation of the load sensors, you must adjust the load sensors to zero. The zero procedure requires that the airplane be on jacks and all weight removed from the main landing gear. Modes 21, 22 and 99 of the WBC are used to zero the load sensors.
B. Special Tools and Equipment
(1) 4065575-901 - Alignment Clamp, Honeywell Inc., Phoenix, Arizona
C. References
(1)
AMM/07-11-01/201, Jack Airplane
(2)
AMM/09-11-00/201, Towing
(3)
AMM 24-22-00/201, Manual Control
(4)
AMM 31-41-05/401, MLG Load Sensor Installation
D. Access
(1) Location Zones
735/736 Wing Landing Gear
755/756 Body Landing Gear
E. Load Sensor Installation
S 422-004
(1) Install the load sensors (AMM 31-41-05/401).
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747-400
MAINTENANCE MANUAL
(BOTTOM)
Wheel Truck Lug Shims
Figure 204
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~....................................................... | | LEFT WING | LEFT BODY | RIGHT BODY | RIGHT WING | | ................................................... | | OB | IB | OB | IB | IB | OB | IB | OB | ......................................................... | FWD | 1 | 2 | 5 | 6 | 9 | 10 | 13 | 14 | ......................................................... | AFT | 3 | 4 | 7 | 8 | 11 | 12 | 15 | 16 | 2.....….....….....….....….....….....…......….....…......1
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