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(d) Remove the nuts [37], washers [36], nuts [35], washers [34], bushings [38], and bolts [39]
that attach the tab mechanism [32] to the horizontal stabilizer [33].
(e) Remove the tab mechanism [32] from the airplane.
GUN ALL
------------------------- END OF TASK ---------------------------
TASK 27-31-34-400-802
3. Elevator Tab Control Mechanism - Installation
(Figure 401)
GUN 156, 201-204, 206 PRE SB 737-55A1080; AIRPLANES WITH FOUR ELEVATOR TAB HINGES
NOTE: Also see Figure 402, Figure 404 and Figure 407.
GUN 001-099, 101-122, 155, 157, 205, 207-999; GUN 156, 201-204, 206 POST SB 737-55A1080; AIRPLANES
WITH THE SIX HINGE ELEVATOR TAB WITH RECTANGULAR HEAD BOLTS
NOTE: Also see Figure 403, Figure 405 and Figure 408.
GUN ALL
A. References
Reference Title
27-31-00-700-804 Elevator Travel Limit - Test (P/B 501)
27-31-00-700-806 Elevator Tab Linkage - Test (P/B 501)
27-31-00-700-809 Control Column Power Force - Test (P/B 501)
27-31-00-710-803 Elevator Power-Off Flight - Test (P/B 501)
27-31-00-800-802 Remove Pressure from the Elevator Hydraulic Systems A and B
(P/B 201)
27-31-00-820-805 Elevator Tab Pushrods - Adjustment (P/B 501)
B. Location Zones
Zone Area
333 Left Horizontal Stabilizer - Rear Spar to Trailing Edge
334 Left Horizontal Stabilizer - Elevator
343 Right Horizontal Stabilizer - Rear Spar to Trailing Edge
344 Right Horizontal Stabilizer - Elevator
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AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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Oct 10/2007
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C. Access Panels
Number Name/Location
318BR Tailcone Access Door
333BB Horizontal Stabilizer, Access Panel, Trailing Edge
343BB Horizontal Stabilizer, Access Panel - T.E. Area
D. Elevator Tab Control Mechanism Installation
SUBTASK 27-31-34-860-004
(1) Make sure hydraulic power is removed from the elevator hydraulic systems A and B. To remove
it, do this task: Remove Pressure from the Elevator Hydraulic Systems A and B,
TASK 27-31-00-800-802.
GUN 156, 201-204, 206 PRE SB 737-55A1080; AIRPLANES WITH FOUR ELEVATOR TAB HINGES
SUBTASK 27-31-34-420-003
(2) Install the tab mechanism [32]:
(a) Put the tab mechanism [32] in its position.
(b) Do this step to connect the tab pushrods [29] to the tab mechanism [32]:
1) Install the bolts [41], washers [46], and new nuts [47] to connect the tab pushrods [29] to
the tab mechanism [32].
NOTE: The inboard bolt is installed with the head inboard and the outboard bolt is
installed with the head outboard.
NOTE: If you loosened or removed the nuts [47], they need to be replaced and not reinstalled.
Using new nuts will ensure that they have the required run-on torque
of 3.5 in-lb (0.4 Nm).
(c) Install the pin assembly [40] with the head at the inside of the tab mechanism [32], bushing
[50], washer [51], and nut [52] to connect the tab mechanism [32] to the elevator [21].
(d) Install the pin assembly [42] with the head at the inside of the tab mechanism [32], washer
[44], washer [43] and nut [45] to connect the tab mechanism [32] to the elevator [21].
(e) Install the screws [48] to attach the pin retainer [49] to the tab mechanism [32].
(f) Install the bushings [38], bolts [39], washers [34], and nuts [35] to connect the tab
mechanism [32] to the horizontal stabilizer [33].
NOTE: The bolts are installed with the heads at the outside of the tab mechanism.
1) Tighten the nuts [35] to 50 - 60 pound-inches (5.7 - 6.8 newton-meters).
CAUTION: DO NOT TIGHTEN THE NUTS [35] AGAIN AFTER YOU TIGHTEN THE NUT [37]. YOU
CAN CAUSE DAMAGE TO EQUIPMENT.
(g) Install the washers [36] and nuts [37].
1) Tighten the nuts [37] to 12 -15 pound-inches (1.4 - 1.7 newton-meters).
GUN 001-099, 101-122, 155, 157, 205, 207-999; GUN 156, 201-204, 206 POST SB 737-55A1080;
AIRPLANES WITH THE SIX HINGE ELEVATOR TAB WITH RECTANGULAR HEAD BOLTS
SUBTASK 27-31-34-420-009
(3) Install the tab mechanism [32]:
(a) Put the tab mechanism [32] in its position.
(b) Do this step to connect the tab pushrods [29] to the tab mechanism [32]:
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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GUN 001-099, 101-122, 155, 157, 205, 207-999; GUN 156, 201-204, 206 POST SB 737-55A1080; AIRPLANES
WITH THE SIX HINGE ELEVATOR TAB WITH RECTANGULAR HEAD BOLTS (Continued)
1) Install the bolts [41], washers [46], spacers [53], and new nuts [47] to connect the tab
pushrods [29] to the tab mechanism [32].
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737-600-700-800-900 AIRCRAFT MAINTENANCE MANUAL飞机维护手册3(56)
