(2)
This installation of the parking brake linkage.
B.
The parking brake linkage is installed below the pilot's control stand. You must remove ceiling panels from the passenger deck to get access.
C.
This procedure gives the steps to remove the torque tube assembly with the attached pawls and levers. You must remove the levers and bearings to remove the counter shaft.
D.
After you install the linkage, you will adjust it and do a test on it.
TASK 32-44-02-024-003
2. Removal of the Parking Brake Linkage (Fig. 401)____________________________________
A. References
(1)
AMM 25-22-01/401, Passenger Compartment Ceiling Lining
(2)
IPC 32-44-60 Fig. 1
B.
Access
(1)
Location Zone 211 Passenger Cabin - Nose to First Door, L.H. 221 Control Cabin, L.H.
C.
Procedure
S 494-001
(1)
Install chocks at all wheels.
(2)
Release the parking brake.
S 014-002
(3)
Remove the fourth middle and left ceiling panels in the passenger compartment forward of door No. 1 (AMM 25-22-01/401).
S 024-005
(4)
Remove the torque tube assembly (8).
(a)
Remove the spring (12) from the structure and the pawl.
S 864-004
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32-44-02
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
STAND PILOTS' CONTROL
UPPER FLOOR DECK LEVER PARKING BRAKE COUNTER SHAFT ASSEMBLY
SEE A DOOR ENTRY NO. 1 SEE B
BRAKE/RUDDER PEDAL
TORQUE TUBE ASSEMBLY
SEE C
BRAKE PEDAL
BELLCRANK
ASSEMBLY
A
Parking Brake Linkage Installation Figure 401 (Sheet 1)
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32-44-02
ALL ú ú 01 Page 402 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
16. SCREW 17. ROD
ASSEMBLY
15. SCREW
18. WASHER
14. INBOARD
19. NUT
LEVER
20. INBOARD BEARING HOUSING
25. SCREW
21. COUNTER SHAFT
24. OUTBOARD BEARING HOUSING
32. WASHER
31. NUT
31. NUT
30. WASHER
32. LOCKBOLTSTRUCTURE
23. WASHER
27. WASHER
(2 LOCATIONS)
22.
NUT 28. OUTBOARD (4 LOCATIONS) LEVER
23.
WASHER (2 LOCATIONS) 25. SCREW 29. SCREW
26. NUT
6. PUSHROD
3. SCREW COUNTER SHAFT ASSEMBLY
(3 LOCATIONS) 4. NUT
B
5. WASHER
LEVER
6. PUSHROD
2. NUT
7. SCREW
1. BEARING 8. TORQUE TUBEASSEMBLY ASSEMBLY
9.
NUT (3 LOCATIONS)
10.
WASHER (3 LOCATIONS)
11.
BEARING ASSEMBLY
12.
SPRING
3. SCREW9. NUT (3 LOCATIONS)(3 LOCATIONS)
10. WASHER
(3 LOCATIONS)
2. NUT
STRUCTURE
TORQUE TUBE ASSEMBLY C
Parking Brake Linkage Installation
Figure 401 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-44-02
ALL ú ú 01 Page 403 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
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