USE A 69-38919 SLEEVE OR AN EQUIVALENT WHEN YOU REPLACE THE BEARING.
REPLACE THE BEARING IF IT DOES NOT TURN FREELY.
Inboard Elevator Power Control Package Wear Limits
Figure 601 (Sheet 2)
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A
747-400 MAINTENANCE MANUAL
(b)
Compare the dimensions you measured with the permitted dimensions shown in Fig. 601.
(c)
Replace the parts that are not in the tolerance.
(d)
Install the parts.
S 436-004
(3) Do this task: "Inboard Elevator Power Control Package Installation" (Ref 27-31-07/201).
TASK 27-31-07-206-005
3. Inboard Elevator Control Pushrods Inspection____________________________________________
A. Standard Tools and Equipment
(1)
Micrometer - 0-1 inch, and 1-2 inch
(2)
Vernier Caliper
B.
Consumable Materials
(1)
C00308 Compound, Corrosion Preventive - MIL-C-11796 Class III.
C.
References
(1)
06-09-06/201, Stabilizer and Elevator Access Doors and Panels
(2)
24-22-00/201, Manual Control
(3)
27-31-00/501, Elevator Control System
(4)
29-11-00/201, Main Hydraulic Supply System
D.
Access
(1)
Location Zone 334 Horizontal Stabilizer, Rear Spar to Trailing Edge, LH 344 Horizontal Stabilizer, Rear Spar to Trailing Edge, RH
(2)
Access Panel 334GBL Horizontal Stab. Trailing Edge Access Door 335GBR Horizontal Stab. Trailing Edge Access Door
E.
Disassemble the Inboard Elevator Control Pushrods
S 016-006
(1)
Open the access panels and doors (Ref 06-09-06/201).
(2)
Do this task: "Supply Electrical Power" (Ref 24-22-00/201).
S 866-008
(3)
Set all FLT CONTROL HYD POWER TAIL switches on the P461 Pilots' Overhead Maintenance Panel in SHUTOFF.
S 866-009
(4)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P180 DC Power Distribution Panel
1) 180E7 ELEV/RUD VLV SYS 2
2) 180E22 ELEV/RUD VLV SYS 4
3) 180H8 ELEV/RUD VLV SYS 1
4) 180H23 ELEV/RUD VLV SYS 3
S 866-007
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747-400 MAINTENANCE MANUAL
E2A
E2B
E1B
ELEVATOR E1A
FEEL UNIT
ELEVATOR FEEL COMPUTER
SEE A REAR QUADRANT
INBOARD ELEVATOR
SEE B INBOARD ELEVATOR CONTROL PUSHRODS
POWER CONTROL
PACKAGE (EXAMPLE) AFT TORQUE TUBE
22. NUT POSITION
TRANSMITTER
21. NUT 20. BOLT (EXAMPLE)
LEFT INBOARD ELEVATOR
LEFT OUTBOARD
OUTBOARD ELEVATOR ELEVATOR POWER CONTROL 22. NUT
21. NUT
PACKAGE (EXAMPLE)
____LEFT SIDE ELEVATORS SHOWN;
NOTE: C RIGHT SIDE ELEVATORS OPPOSITE.
A
1. BUSHING/BOLT
SEE C 3. CRANK/BEARING
2. BEARING/BOLT 15. BOLT
A
14. BUSHING/BOLT 4. BUSHING/BOLT13. BUSHING/BOLT
5.
CRANK/BEARING
6.
BEARING/BOLT
BRACKET BOLT 12. BUSHING/ ASSEMBLYBEARING7. BEARING/BOLT
A
11. BEARING/BOLT
10. CRANK/BEARING
8. CRANK/BEARING 16. WASHER 9. BUSHING/BOLT 19. NUT
17.
COLLAR
18.
WASHER
B A-A
Inboard Elevator Control Linkage Wear Limits
Figure 602 (Sheet 1)
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