projected center of the elevator trailing edge with the index mark within +/- 0.04 inch or less.
NOTE: Keep the elevator at this position while you do the
____ step to measure the elevator tab position. If the elevator position is changed, you must put the elevator trailing edge at full up position and do this step again before you continue.
2) Adjust the tab to the same positon as measured and recorded in the tab removal step of this procedure (for adjustment refer to AMM 27-31-00/501, "Adjustment - Elevator and Tab Control System", using the single point method).
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A 737-300/400/500MAINTENANCE MANUAL
ú ú ú ú ú ú ú 3) If aluminum tab rods are installed and the ambient temperature has changed from the ambient temperature recorded in the removal, then the elevator tab position will need to be adjusted for the temperature change. To dothis, the rig position is increased (the trailing edge ofthe tab moves down) by 0.0073 inch for each 10 degreesFahrenheit increase in temperature and decreased (thetrailing edge of the tab moves up) by 0.0073 inch for each10 degrees Fahrenheit decrease in temperature.No temperature adjustment is necessary when titanium tabrods are installed.
NOTE:____ For example: For a maintenance action which requires a subsequent flight test, the left and right elevator tab position is measured and recorded as 0.332 inch at an ambient temperature of 40 degrees Fahrenheit. After the maintenance action is complete and the tab control rods are to be adjusted, the ambient temperature is 70 degrees Fahrenheit. The tab control rods are rigged to a position of 0.310 inch.
ú ú ú (c) (d) If you install a new tab and the measurement for the elevator tab position were not recorded in the "Remove elevator tab" step of this procedure: Adjust the elevator tab system per AMM 27-31-00/501.If you install a new tab and the measurements of the elevatortab position were recorded during the "Remove the elevator tab" step of this procedure, then adjust the elevator tab per steps(b). 1) through 3) above.
S 714-011
ú (13) Do a test of the elevator tab linkage (AMM 27-31-00/501).
ú S 714-024
ú (14) Make sure that elevator mismatch is not greater than 0.01 inch.
S 714-012
(15) If it is necessary, do this task: (AMM 27-31-00/501). "Elevator Power Off Flight Test"
S 414-007
(16) Close the access doors and install all the access panels.
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737-300/400/500MAINTENANCE MANUAL
ELEVATOR TABS - INSPECTION/CHECK
________________________________
1. General_______
A. This procedure has two tasks. The first task is an inspection of the elevator tabs fasteners. The second task is an inspection of the elevator tabs. The procedure has these parts:
(1)
An inspection of the elevator tabs fasteners
(2)
The removal of the elevator tabs
(3)
An inspection of the elevator tabs
(4)
The installation of the elevator tabs.
TASK 27-31-31-206-004
2. Elevator Tabs Fasteners Inspection__________________________________
A. Access
(1)
Location Zone
711, 712 Elevator and Tab
(2)
Access Panels
3801/3802 Tail Cone Access Door
9143/9243 Removable Elevator Leading Edge Upper
B.
Procedure
S 216-005
CAUTION:_______DO NOT TIGHTEN THE FASTENER TO MORE THAN 90 POUND-INCHES. YOU CAN CAUSE DAMAGE TO THE FASTENERS.
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