EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-62-00
 ALL  ú ú 03 Page 504 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (2)  
Refer to 76-12-02/401, for the adjustment of the automatic speed brake switches S1B and S3B for thrust levers No. 1 and No. 3. Refer to AMM 27-62-09/401, for the adjustment of the reverse thrust lever operated arming switch S861.

 B.
Special Tools and Equipment

 (1)  
G12001-50, Rig Pin Kit

 (2)  
G27002-1 No. 6 and No. 7, Spoiler Actuator Locking Tool

 (3)  
G27018-1, Rigging Equipment Kit (Preferred)

 (4)  
MIT61B04016-35, Index Plate, Part 1 (Optional to G27018-2)

 (5)  
MIT61B04016-35, Bushing, Part 2 (Optional to G27018-3)

 (6)  
MIT61B04016-35, Bushing, Part 3 (Optional to G27018-4)

 C.
Standard Tools and Equipment

 (1)  
Ohmmeter or Continuity Test Light

 D.
Consumable Materials

 (1)  
A00344, Compound - Soft-filmed (corrosion preventive), MIL-C-11796 Class 2 or 3

 (2)  
A00704, Sealant - Silicone, RTV-162

 (3)  
B00083, Solvent - TT-N-95, aliphatic naphtha

 E.
References

 (1)  
AMM 76-12-02/401, Autothrottle Disconnect and Go-Around Switches

 (2)  
AMM 24-22-00/201, Manual Control
 AMM 25-59-01/401, Main Deck Compartment Cargo Lining Panel

 (3)  
AMM 25-59-01/401, Main Deck Compartment Cargo Lining Panel

 (4)  
AMM 27-51-00/201, Trailing Edge Flap System

 (5)  
AMM 27-62-09/401, Reverse Thrust Lever Operated Auto Speed Brake Arming Switch

 (6)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (7)  
AMM 32-00-30/201, Landing Gear Door Locks

 F.
Access

 (1)  
Location Zone
 135 Wing Landing Gear Wheel Well, LH
 136 Wing Landing Gear Wheel Well, RH
 211 Passenger Cabin - Nose to First Door, LH
 212 Passenger Cabin - Nose to First Door, RH
 221 Control Cabin, LH
 222 Control Cabin, RH
 574 Spoiler No. 6
 674 Spoiler No. 7

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-62-00
 ALL  ú ú 05 Page 505 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 G. Prepare for the Adjustment
 S 865-012
 (1)  Make sure the landing gear ground locks are installed.
 S 495-013
 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)  
Do this task: "Wing Landing Gear Door Lock Installation"
 (AMM 32-00-30/201).

 S 865-015

 (3)
Open the following circuit breaker and attach a DO-NOT-CLOSE tag:

 (a)  
P7 Overhead Circuit Breaker Panel
 1) 7G6, SPEED BRAKE AUTO CONT

 H.
Adjust the Speed Brake Control System

 S 415-188
 (1)  
Remove the ceiling panels forward of the main deck compartment near body station 325: (AMM 25-59-01/401).

 S 035-016

 (2)  
To disconnect the automatic speed brake actuator from the idler crank remove the bolt, washer and nut (Fig. 501).

 S 835-017

 (3)  
With the speed brake lever in the UP position, loosen the checknut and move the upstop until there is a clearance of .25 inch (6.35mm) or more between the upstop and the locking arm shoe (Fig. 503).

 S 835-018

 (4)  
With the speed brake lever in the DN position, loosen and move the downstop until there is a clearance of 0.25 inch (6.35mm) or more between the downstop and the locking arm shoe (Section B-B, FIG. 501).
　
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