(3)
Set the stabilizer at 3 士0.5 units of trim.
(4)
Use a device that can cause a blockage of the elevator to prevent its motion during the check.
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27-09-600 Page 608B BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 01/01
CAUTION: BE VERY CAREFUL WHEN YOU INSTALL A DEVICE TO CAUSE A BLOCKAGE OF THE ELEVATOR. THE ELEVATOR IS MADE OF COMPOSITE MATERIALS. THE DEVICE CAN CAUSE DAMAGE TO THE ELEVATOR IF YOU ARE NOT CAREFUL.
NOTE: You can put a piece of wood between the elevator and the airplane structure to prevent elevator movement.
(5) Attach a mounting device to the elevator trailing edge.
CAUTION: BE VERY CAREFUL WHEN YOU INSTALL THE MOUNTING DEVICE. THE ELEVATOR IS MADE OF COMPOSITE MATERIALS. THE MOUNTING DEVICE CAN CAUSE DAMAGE TO THE ELEVATOR IF YOU ARE NOT CAREFUL.
(a)
Attach the dial indicator plunger on the top of the elevator tab, approximately 0.1 inch forward of the trailing edge and aft of the inboard hinge.
(b)
Adjust the dial indicator to zero.
(6) Use a force scale to push the top of the elevator tab with a force of 5 士0.5 pounds.
CAUTION: USE SUFFICIENT PADDING ON THE FORCE SCALE TO PREVENT DAMAGE TO THE CONTROL SURFACE.
NOTE: Push this force aft of the inboard hinge, in 0.5 inch or less of the indicator plunger.
(a)
Make a record of the travel shown on the dial indicator.
(b)
Slowly remove the force.
(7) Push on the bottom surface of the elevator tab with a force of 5 士 0.5 pounds, directly below the force applied before.
NOTE: Do not adjust the dial indicator.
(a)
Make a record of the travel shown on the dial indicator.
(b)
Slowly remove the force.
(8)
FOR AIRPLANES WITH GRAPHITE/COMPOSITE ELEVATOR TAB; make sure the sum of the two travel records is not more than 0.036 inch.
(9)
FOR AIRPLANES WITH ALUMINUM FIBERGLASS ELEVATOR TAB; make sure the sum of the two recorded travels is not more than 0.030 inch.
(10)
Remove pressure form elevator hydraulic systems A and B (AMM 27-31-0-201).
(11)
Remove the dial indicator.
(12)
Remove the mounting device.
(13)
Remove the device that you used to cause a blockage.
(14)
Install new castellated nut and tighten the nut to 50-80 inch-pounds. Install cotter pin.
(15)
Repeat test for the elevator tab on other side.
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May 01/01 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-09-600 Page 608C
D. Do a check of the elevator tab freeplay (Fig. 603):
(1)
Pressurize the elevator control hydraulic systems A and B (AMM 27-31-0/201).
WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES AND THE LANDING GEAR WHEN HYDRAULIC POWER IS SUPPLIED. THE AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, STABILIZER, LANDING GEAR AND THRUST REVERSERS CAN MOVE QUICKLY WHEN SUPPLIED WITH POWER BY THE HYDRAULIC SYSTEMS. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
(2)
Set the stabilizer at 3 士0.5 units of trim.
(3)
Use a device that can cause a blockage of the elevator to prevent its motion during the check.
CAUTION: BE VERY CAREFUL WHEN YOU INSTALL A DEVICE TO CAUSE A BLOCKAGE OF THE ELEVATOR. THE ELEVATOR IS MADE OF COMPOSITE MATERIALS. THE DEVICE CAN CAUSE DAMAGE TO THE ELEVATOR IF YOU ARE NOT CAREFUL.
NOTE: You can put a piece of wood between the elevator and the airplane structure to prevent elevator movement.
(4) Attach a mounting device to the elevator trailing edge.
CAUTION: BE VERY CAREFUL WHEN YOU INSTALL THE MOUNTING DEVICE. THE ELEVATOR IS MADE OF COMPOSITE MATERIALS. THE MOUNTING DEVICE CAN CAUSE DAMAGE TO THE ELEVATOR IF YOU ARE NOT CAREFUL.
(a)
Attach the dial indicator plunger on the top of the elevator tab, approximately 0.1 inch forward of the trailing edge and aft of the inboard hinge.
(b)
Adjust the dial indicator to zero.
(5) Use a force scale to push the top of the elevator tab with a force of 5 士0.5 pounds.
CAUTION: USE SUFFICIENT PADDING ON THE FORCE SCALE TO PREVENT DAMAGE TO THE CONTROL SURFACE.
NOTE: Push this force aft of the inboard hinge, in 0.5 inch or less of the indicator plunger.
(a)
Make a record of the travel shown on the dial indicator.
(b)
Slowly remove the force.
(6) Push on the bottom surface of the elevator tab with a force of 5 士0.5 pounds, directly below the force applied before.
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