B.  Consumable Materials
 (1)  
Solvent, BMS 3-2

 (2)  
Tape, MYSTIC 7355 (V32975)

 C.  References
 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 31-41-08/401, Protective Covers

 D.  Access
 (1)  Location Zones
 735/736 Wing Landing Gear
 755/756 Body Landing Gear

 E.  Protective Cover Clamps
 S 422-010
 (1)  Install the clamps (AMM 31-41-08/401).
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747-400 MAINTENANCE MANUAL
 F. Protective Covers
 S 422-011
 (1)  
Install the forward protective covers (AMM 31-41-08/401).

 S 422-012

 (2)  
Install the aft protective covers (AMM 31-41-08/401).

 TASK 31-41-05-822-013
 3.  Main Landing Gear Mounting Lug Shims (Fig. 204)____________________________________
 A. General
 (1)  
Shims are installed on the mounting lugs for the load sensors on the wheel truck. The shims set the mounting surfaces parallel to each other (| 0.005 inch).

 (2)  
The shims are installed initially and are not usually replaced. Adhesive attaches the shims.

 (3)  
During the overhaul of the main landing gear, the shims can be removed. New beams for the landing gear possibly will not have shims installed.

 (4)  
It is necessary to lift the airplane on jacks when you install the shims. The digital voltage count of the WBC mode 22 is used to find the necessary shims. The permitted digital voltage count is 26467 to 37717.

 (5)  
Shims are available in two dimensions. A 0.002-inch thick shim (Boeing P/N 284U4049-55) will change the digital voltage count by approximately 9000 counts. A 0.003-inch thick shim (Boeing P/N 284U4049-49) will change the digital voltage count by approximatley 13,500 counts. No more than two shims are permitted at each mounting lug pair.

 B. Equipment
 (1)  
4065575-901 - Alignment Clamp, Top Load Sensor, Honeywell Inc., Phoenix, Arizona

 (2)  
4065572-901 - Alignment Clamp, Bottom Load Sensor, Honeywell Inc., Phoenix, Arizona (dual WBS only)

 C. Consumable Materials
 (1)  
Adhesive - BMS 5-26

 (2)  
Stripper - Turco 5351 (V61102)

 (3)  
Solvent - BMS 11-7

 D. Parts
 (1)  
284U4049-55 - Shim, 0.002 inch thick (quantity - AR)

 (2)  
284U4049-49 - Shim, 0.003 inch thick (quantity - AR)

 E. References
 (1)  
AMM 07-11-01/201, Jack Airplane

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
AMM 31-41-05/401, Load Sensor Installation

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747-400
MAINTENANCE MANUAL

FORWARD PROTECTIVE COVER
SEE A
FWD
MAIN LANDING GEAR
SCREWNUT, WASHER PROTECTIVE
(4 LOCATIONS)(4 LOCATIONS) COVER
PLUG
CLAMP
WIRELOAD BUNDLESENSOR 13.5 |0.3 INCH
(34.3 |0.8 cm)
WHEEL TRUCK LUGS
CLIP, BLOCKSCLAMP (4 LOCATIONS)
CLAMP, SCREW
90` NUTELBOW
FORWARD PROTECTIVE COVER (FACEPLATE REMOVED)
A
Forward Load Sensor Protective Cover
Figure 201

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747-400 MAINTENANCE MANUAL
AFT PROTECTIVE COVER CLAMPS
　
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