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 (4)  S 722-048Do the task which does a test of the wing gear truck tilt sensor.
 (5)  S 862-050Open the applicable circuit breaker on the P7 Overhead Circuit Breaker Panel and install a DO-NOT-CLOSE tag: (a) 7F22, LANDING GEAR DSP & CONT PRI (b) 7F23, LANDING GEAR DSP & CONT ALTN
 (6)  S 432-049Continue the installation procedure:
 CAUTION:_______ MAKE SURE YOU SEAL THE ELECTRICAL TERMINALS. IF YOU DO NOT SEAL THE ELECTRICAL TERMINALS, CONTAMINATION CAN GET INTO THEM AND CAUSE DAMAGE TO THE SENSORS.
 (a) (b) (c)  Do these steps to seal the electrical terminals: 1) Clean the bare surface of the terminals with solvent. 2) Apply a thin layer of primer on the bare surface of the terminals and let it dry. 3) Apply sealant on the surface of the terminals with a short bristle brush.Tighten the conduit nut to the sensor by hand and install a lockwire.Install the junction box cover.

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747-400 MAINTENANCE MANUAL
 S 862-010
 (7)  
Remove the DO-NOT-CLOSE tag and close the applicable circuit breaker on the P7 Overhead Circuit Breaker Panel:

 (a)  
7F22, LANDING GEAR DSP & CONT PRI

 (b)  
7F23, LANDING GEAR DSP & CONT ALTN

 S 862-012
 (8) Put the airplane back to the ground mode (AMM 32-09-02/201).
 TASK 32-61-22-002-082
 4. Removal of the Truck Tilt Sensor Target for the Wing Gear
_________________________________________________________
 A. Standard Tools
 (1)  
Nonabrasive, nonconducting plastic scraper

 B.
References

 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 32-00-30/201, Landing Gear Door Locks

 (3)  
AIPC 32-61-57 Fig. 21

 C.
Access

 (1)  
Location Zone
 735 Wing Landing Gear, LH
 745 Wing Landing Gear, RH

 D.
Prepare for Removal

 S 492-083
 WARNING: YOU MUST CAREFULLY INSTALL GROUND LOCKS IN ALL LANDING GEAR.
_______ AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (1)  Make sure that ground locks are installed on all landing gear (AMM 09-11-00/201).
 S 492-084
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2) Install the door locks for the main gear (AMM 32-00-30/201).
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747-400 MAINTENANCE MANUAL
 E. Remove the Truck Tilt Sensor Target Bracket (Fig. 201)
 S 022-089
 (1)  
Do these steps to remove the sensor target bracket:

 (a)  
Remove the bolts, nuts, and washers which secure the target bracket.

 (b)  
Remove the target bracket and shim.

 NOTE:____Record the location and orientation of the shim. You will use this information for the installation.
 S 142-099
 (2)  Remove the sealant material from the target bracket, shim, and mounting surface with a plastic scraper.
 TASK 32-61-22-402-090
 5. Installation of the Truck Tilt Sensor Target Bracket for the Wing Gear
______________________________________________________________________
 A. Consumable Materials
 (1)  
A00704 Sealant - Silicone, RTV 162

 (2)  
B00083 Solvent - Aliphatic Naphtha, TT-N-95, Type 2

 B.
References

 (1)  
AMM 32-00-30/201, Landing Gear Door Locks

 (2)  
AIPC 32-61-57 Fig. 21

 C.
Access

 (1)  
Location Zone
 735 Wing Landing Gear, LH
　
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