WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASKS BELOW TO REMOVE
_______ THE DOOR LOCKS FROM THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(9)
Remove the door locks from the doors of the wing and body landing gear (Ref 32-00-30/201).
S 714-070
(10)
Do the operational test of the wing landing gear (Ref 32-32-00/501).
S 864-071
(11)
Lower the airplane to the ground (Ref 7-11-01/201).
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57-15-01
ALL ú ú 01 Page 415 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
WING LANDING GEAR SUPPORT BEAM GATE FITTING - INSPECTION/CHECK
______________________________________________________________
1. General_______
A. This section contains a task to examine the gate fitting for the support beam of the wing landing gear.
B. To do the inspection, you must accurately measure the inner and the outer diameters of these components in the gate fitting:
(1)
The bushings
(2)
The bearings
(3)
The pins.
C. You must first disassemble the gate fitting to do the inspection.
TASK 57-15-01-206-001
2. Examine the Gate Fitting (Fig. 601)________________________
A. Standard Tools and Equipment
(1)
Micrometer - 2 to 3 inch, inner and outer measuring
(2)
Micrometer - 3 to 4 inch, inner and outer measuring
(3)
Vernier Caliper - alternative to micrometers
B. References
(1)
57-15-01/401, Wing Landing Gear Support Beam Gate Fitting
(2)
IPC 57-41-07 Fig. 1
C. Access
(1) Location Zone 572 Landing Gear Support Beam And Rear Spar To Trailing Edge, Left
672 Landing Gear Support Beam and Rear Spar to Trailing Edge, Right
D. Procedure
S 036-002
(1)
Remove the gate fitting (Ref 57-15-01/401).
S 226-003
(2)
Examine the condition of the gate fitting and its related parts for the wear limits.
(a)
Remove the parts you will examine.
(b)
Measure the parts as necessary and compare your measured dimensions to the dimensions in Table 601.
(c)
If the part dimensions do not agree with the tolerances from Table 601, repair or replace the part (Refer to Table 601).
(d)
Install the parts that you removed.
(3)
Install the gate fitting (Ref 57-15-01/401)
S 436-004
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57-15-01
ALL ú ú 01 Page 601 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
SEE A
(REF) WING REAR SPAR
GATE FITTING A 1 LOCKPIN END FITTINGS (2) SUPPORT BEAM 2 GEAR SUPPORT WING LANDING BEAM (REF)
BEARING RETAINER
A
A
1 AIRPLANES WITH LOCK CLIP
2 ONE FITTING ON SOME AIRPLANES
Wing Landing Gear Support Beam Gate Fitting Wear Limits Figure 601 (Sheet 1)
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