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 B.  A typical control cable system terminates at a drum or quadrant by means of swaged terminals and has turnbuckles to allow tensioning the cable to the proper rigging load. Long cable runs are supported by idler pulleys. Air seals are used to reduce pressure loss when cables are routed through pressure bulkheads.
 C.  Control cable pulleys are accessible in the wheel wells, above the passenger compartment ceiling and side panels and forward of landing gear control module.
 D.  A 12 x 12 inch plywood bearing panel 1/2 inch thick, or equivalent, is required beneath each foot of each ladder, stand, or scaffolding used inside airplane. Floor panel damage can result from local load concentration.
Brake Cable Air Pressure Seals (Fig. 8)
______________________________
 A.  To prevent loss of fuselage pressurization, air pressure seals are installed on the control cables when they pass through a pressure bulkhead. To locate brake control cable air pressure seals see figure 8. For Control Cable Air Pressure Seal - Removal/Installation refer to 20-11-04/401.
Landing Gear Control Cable Air Pressure Seals (Fig. 9)
_____________________________________________
 A.  To prevent loss of fuselage pressurization, air seals are installed on the control cables when they pass through a pressure bulkhead. To locate landing gear control cable air pressure seals see figure 9. For Control Cable Air Pressure Seal - Removal/Installation refer to 20-11-04/401.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

Landing Gear Control Cables
Figure 1 (Sheet 1)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

REF CABLE  NO. REQ  INCH) (TO NEAREST TENTH LENGTH 1  FITTINGS 1 
1  2 
LGV2B-2 LGV2B-1 LGV2A-2 LGV2A-1 LGV1B-3 LGV1B-2 LGV1B-1 LGV1A-3 LGV1A-2 LGV1A-1  1 1 1 1 1 1 1 1 1 1  164.9 924.2 289.3 124.2 146.3 108.1 163.4 260.9 974.4 138.4  MS21260-L3LH MS21260-L3RH MS21260-L3RH MS21260-L3LH MS21260-L3RH MS21260-L3RH MS21260-L3LH MS21260-L3LH MS21260-L3RH MS21260-L3RH  BACT14A3 BACT14A3 BACT14A3 BACT14A3 BACT14A3 BACT14A3 BACT14A3 BACT14A3 MS21260-L3LH MS21260-L3LH 

CABLE SIZE - 3/32 7 X 7
MS21260-L3

LGV2A-2 AND LGV1B-2

REFERENCE ONLY. FOR SPECIFIC PART NUMBER, LENGTH, MATERIAL, AND END FITTINGS, REFER TO CURRENT IPC.
Landing Gear Control Cables Figure 1 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
MAINTENANCE MANUAL

LGDR3B-2 (LH) LGDR4B-2 (RH) CABLE
DIFFERENTIAL
WING GEAR
DOOR ACTUATOR

SEE A
LGDR1B-1 (LH) LGDR2B-1 (RH) CABLE
FWD  LGDR1A-1 (LH) LGDR2A-1 (RH) 
CABLE 
TURNBUCKLES 
CONTROL 
LGDR3A-2 (LH) LGDR4A-2 (RH) CABLE  HANDLE GROUND DOOR RELEASE  LGDR1A-2 (LH) LGDR2A-2 (RH) CABLE 
TURNBUCKLES  LGDR1B-2 (LH) 
LGDR2B-2 (RH) 
CABLE 

BODY GEAR UPLOCK
BODY GEAR DOOR SAFETY VALVE
DIFFERENTIAL
BODY GEAR
DOOR ACTUATOR LGDR3A-1 (LH) LGDR4A-1 (RH) CABLE
LGDR3B-1 (LH) LGDR4B-1 (RH)
WING GEAR CABLE
UPLOCK
A
Main Landing Gear Alternate Extension Control Cables
Figure 2 (Sheet 1)

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