(2)
The installation of the replacement tab mechanism.
TASK 27-31-34-004-015
2. Elevator Tab Control Mechanism Removal (Fig. 401)______________________________________
A. Special Tools and Equipment
(1) Rig Pin (E-5) - 0.309/0.311-inch diameter, 6.7 |0.25 inches long (MS20392-4)
NOTE: The rig pin is part of the rig pin kit F70207-69, -78 or -83.
____
B. References
(1)
27-31-00/201, Elevator and Tab Control System
(2)
27-31-00/501, Elevator and Tab Control System
C.
Access
(1)
Location Zone
711 Elevator and Tab, LH
712 Elevator and Tab, RH
(2)
Access Panels 3701 Stabilizer Trim Access Door 9143 Removable Elevator Leading Edge Upper, LH 9243 Removable Elevator Leading Edge Upper, RH 9313 Elevator Mast Fitting Fairing, LH 9413 Elevator Mast Fitting Fairing, RH
D.
Procedure
S 864-001
(1)
Do this task: "Remove the Pressure from the Elevator Hydraulic Systems A and B" (Ref 27-31-00/201).
(2)
Open the access door 3701.
(3)
Remove the access panel 9313, 9413, 9143 or 9243.
(4)
Install the rig pin E-5 in the aft quadrant.
S 014-002
S 014-003
S 494-004
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A
737-300/400/500
MAINTENANCE MANUAL
ACCESS PANEL
ACCESS PANEL ELEVATOR TAB
(SAME ON BOTTOM)
MOUNTING
BOLTS
SEE A
CRANK
SEE B
TAB PUSHRODS (AFT END)
TAB PUSHRODS
A
Elevator Tab Control Mechanism Installation
Figure 401 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500
MAINTENANCE MANUAL
HORIZONTAL STABILIZER
ELEVATOR
TAB PUSHROD
A
TAB
PIN RETAINER
A
SEE C
B
TAB PUSHRODS
WASHER
PIN
NUT
ASSEMBLY 1
WASHER
THE BUSHINGS NUT
ARE A PRESS FIT IN THE STRUCTURE
BOLT
PIN ASSEMBLY 1
WASHER
NUT
BOLT
COTTER
BUSHING PIN
INBD
FWD
A-A
PIN RETAINER
C
1
THE PIN ASSEMBLY IS BONDED TOGETHER
Elevator Tab Control Mechanism Installation
Figure 401 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
S 024-005
(5)
Remove the tab mechanism (Fig. 401):
(a)
Do this task to measure the elevator tab position (measured at a single point or at four hinge point locations): "Adjustment
-Elevator and Tab Control System" (Ref 27-31-00/501).
(b)
Remove the nuts, washers, bushings and bolts from the elevator tab pushrods at the aft end of the pushrods.
(c)
Remove the nuts, washers, bushings and bolts from the arms that attach the forward end of the crank to the horizontal stabilizer.
(d)
Remove the pin retainer.
(e)
Remove the crank pins, nuts, washers.
(f)
Remove the tab mechanism from the airplane.
NOTE: You do not have to disconnect the pushrods from the
____ crank for the tab mechanism removal.
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