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A 737-300/400/500MAINTENANCE MANUAL

LEFT ELEVATOR TAB
(RIGHT ELEVATOR TAB IS OPPOSITE)

Elevator and Elevator Tab Freeplay Checks
Figure 604

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A 737-300/400/500MAINTENANCE MANUAL

HINGE BRACKET
HINGE BRACKET
CLAMPED HINGE (TYPICAL) SLIP HINGE (TYPICAL) B-B B-B

1
THIS IS THE FLANGED BUSHING THAT IDENTIFIES
THE HINGE AS A CLAMPED HINGE.

Elevator Tab Hinge Free-Play Checks Figure 605
L13665
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A
737-300/400/500MAINTENANCE MANUAL
 D. Access
 (1)  
Location Zone
 711 Elevator and Tab, LH
 712 Elevator and Tab, RH

 E.
Procedure

 S 226-013
 (1)
Do a check of the bus linkage of the elevator output torque tube:

 (a)  
Pressurize the elevator hydraulic system A (AMM 27-31-00/201).

 CAUTION: USE SUFFICIENT PADDING ON THE FORCE SCALE TO PREVENT
_______
 DAMAGE TO THE CONTROL SURFACE.

 (b)  Put a piece of tape on the left side of the airplane tailcone adjacent to the elevator trailing edge, and do the step that follows: 1) Tape a pointer on the trailing edge of the elevator.
 NOTE: Put the end of pointer close to the tape but without
____
 touching it.

 (c)  Apply force to the elevator within 0.5 inch forward of the trailing edge and 1 inch outboard of inboard edge. Do these steps: 1) Push up with a force of 8 |0.5 pounds on the trailing edge
 of the left elevator.
 2) With the force applied, make a mark on the tape showing the
 upward limit of elevator travel.
 3) Slowly release the force on the elevator.
 4) Push down with a force of 8 | 0.5 pounds on the trailing
 edge of the left elevator.
 5) With the force applied, make a mark on the tape showing the
 downward limit of elevator travel.
 6) Slowly release the force on the elevator.
 7) Measure the distance between the upward limit mark and the
 downward limit mark. 8) Make sure the distance between the up and down limits is not more than 0.210 inch.
 (d)  
Release the pressure from the elevator hydraulic system A (AMM 27-31-00/201).

 (e)  
Pressurize the elevator hydraulic system B (AMM 27-31-00/201).

 (f)  
Put a piece of tape on the right side of the airplane tailcone adjacent to the elevator trailing edge, and do the step that follows: 1) Tape a pointer on the trailing edge of the elevator.

 NOTE: Put the end of pointer close to the tape but without
____
 touching it.

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737-300/400/500MAINTENANCE MANUAL
 2) Push up with a force of 8 | 0.5 pounds on the trailing edge of the right elevator. 3) With the force applied, make a mark on the tape showing the
 upward limit of elevator travel. 4) Slowly release the force on the elevator. 5) Push down with a force of 8 | 0.5 pounds on the trailing
 edge of the right elevator. 6) With the force applied, make a mark on the tape showing the
 downward limit of elevator travel. 7) Slowly release the force on the elevator. 8) Measure the distance between the upward limit mark and the
 downward limit mark. 9) Make sure the distance between the up and down positions is not more than 0.210 inch (AMM 27-31-11/601).
　
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