(2)
The removal of the elevator forward quadrant
(3)
The installation of the replacement elevator forward quadrant
(4)
The adjustment of the elevator forward quadrant
(5)
The operational test of the elevator forward quadrant.
B.
The removal and installation procedure is the same for the left or the right elevator forward quadrant.
TASK 27-31-05-004-001
2. Elevator Forward Quadrant Removal (Fig. 401)_________________________________
A. Special Tools and Equipment
(1)
2ME65B80926 - Holding Tool-Cable Rigging Rudder and Elevator Tension Regulator
(2)
G12001 Rig Pin Kit
B.
Standard Tools and Equipment
(1)
Cable Tensiometer - 0 to 350 - pound range for 1/8-inch diameter cable.
C.
References
(1)
06-09-05/201, Body Section 48 Access Doors and Panels
(2)
24-22-00/201, Manual Control
(3)
IPC 27-31-05 Fig. 2
D.
Access
(1)
Location Zone 211 Passenger Cabin-Nose to First Door, LH 212 Passenger Cabin-Nose to First Door, RH 315 Area Aft of Stabilizer Box Compartment, LH 316 Area Aft of Stabilizer Box Compartment, RH
(2)
Access Panel
315A Access Door
E.
Prepare for Removal
(1)
Do this task: "Supply Electrical Power" (Ref 24-22-00/201).
S 864-002
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-31-05
ALL ú ú 01 Page 401 ú Oct 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 864-003
(2)
Set all FLT CONTROL HYD POWER TAIL switches on the P461 Pilots' Overhead Maintenance Panel to SHUTOFF.
S 864-004
(3)
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 014-005
(4)
Open the access door 315A (Ref 06-09-05/201).
S 014-006
(5)
Open the ceiling panels to get access to the elevator forward quadrant and body cable turnbuckles if it is necessary.
NOTE: Adjust the turnbuckles only if the adjustment on the
____ turnbuckles aft of the pressure bulkhead is not sufficient.
F. Remove the Elevator Forward Quadrant
S 494-007
(1)
Install the rig pin E-2 at the elevator aft quadrant.
S 494-008
(2)
For the left elevator forward quadrant; Install the holding tool.
(a)
Make sure the tension regulator (2) does not move.
(b)
Loosen the cable turnbuckles without the movement of the regulator arms.
S 034-009
(3)
Loosen the body cables at the aft turnbuckles:
(a)
Release the tension equally in cables E1A and E1B for the left elevator forward quadrant.
(b)
Release the tension equally in cables E2A and E2B for the right elevator forward quadrant.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-31-05
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
TURNBUCKLES
E2B
E2A
E2A
RIGHT QUADRANT
E1A
SEE A
E1B
LEFT QUADRANT CABLE ARM
SEE B
E2B
PUSHROD
FWD
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