S 096-061
(2)
Do this task: "Removal of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).
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A
747-400
MAINTENANCE MANUAL
MAIN GEAR TRUCK BEAM
A
ASSEMBLY
A
BB
____ THE LEFT WING GEAR IS SHOWN, THE GEAR AT ALLNOTE: BRAKE ROD BRAKE TORQUE ARM
OTHER LOCATIONS ARE EQUIVALENT.
THE TIRES, WHEELS, BRAKE UNITS AND BRAKE RODS
ON THE NEAR SIDE OF THE TRUCK ARE NOT SHOWN.
AXLE SLEEVE
BRAKE TORQUE
ARM
3. BUSHING/BOLT
BRAKE
2. BUSHING/
ROD
BRAKE OUTER
BEARING
6. BUSHING/ 5. BOLT/ BUSHING BUSHING
1. BUSHING/ BRAKE INNER BEARING
4. BUSHING/BOLT 3. BUSHING/BOLT
MAIN GEAR
TRUCK BEAM (EXAMPLE, 4 LOCATIONS)
ASSEMBLY
B-B
(EXAMPLE, 4 LOCATIONS)
(THE BRAKE HOUSING IS NOT SHOWN)
A-A
Wear Limits for the Landing Gear Brake Unit
Figure 602 (Sheet 1)
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747-400
MAINTENANCE MANUAL
NO. INDEX PART NAME DIM. DESIGN LIMITS WEAR LIMITS PART WORN REPLACE PART WORN REPAIR INSTR REPAIR
DIAMETER PER-MITTED WEAR DIM. 6 ANCE CLEAR-MAX DIA
MIN MAX
1 BEARING BRAKE INNER ID 6.2050 6.2070 6.2100 TBD 1
BUSHING OD 6.1970 6.1990 6.1920 X
2 BEARING BRAKE OUTER ID 6.2050 6.2070 6.2100 TBD 1
BUSHING OD 6.1970 6.1990 6.1920 X
3 BUSHING ID 1.2510 1.2530 1.2552 0.0072 1
BOLT OD 1.2480 1.2490 1.2458 1
4 BUSHING ID 1.2500 1.2510 1.2532 0.0052 X
BOLT OD 1.2480 1.2490 1.2458 1
5 BOLT 2 3.5150 3.5340 3.5440 0.0900 1
BUSHING 3 3.4540 3.5060 3.4440 1
6 BUSHING 4 1.7500 1.7700 1.8040 0.0680 1
BUSHING 5 1.7360 1.7480 1.7020 X
YOU CAN REPAIR THE WORN PART. REFER TO THE OVERHAUL MANUAL FOR THE REPAIR INFORMATION.
DISTANCE BETWEEN THE HEAD AND THE NUT (BOLT GRIP LENGTH).
____ TIGHTEN THE NUT ON THE BOLT BEFORE YOU MEASURE THE DISTANCE. YOU CAN TURN THE NUT BACK
NOTE:
A MAXIMUM OF 1/6 TURN TO GET THE CORRECT DIMENSION.
WIDTH OVER THE BRAKE TORQUE ARM BUSHINGS.
WIDTH BETWEEN THE FLANGES OF THE BRAKE TORQUE ARM BUSHINGS.
WIDTH OVER THE FLANGES OF THE BRAKE ROD BUSHINGS.
THE MAXIMUM DIMENSION CAN BE MORE THAN THE LIMITS SHOWN IF THE MAXIMUM CLEARANCE IS SATISFACTORY.
Wear Limits for the Landing Gear Brake Unit
Figure 602 (Sheet 2)
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747-400 MAINTENANCE MANUAL
HYDRAULIC BRAKE DISCONNECT - REMOVAL/INSTALLATION
_________________________________________________
1. General_______
A. This procedure contains these tasks:
(1)
The removal of the hydraulic brake disconnect assembly.
(2)
The installation of the hydraulic brake disconnect assembly.
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