(a)
Examine hinges 1 and 2 and determine which hinge is the clamped hinge. ( A flanged bushing should be visible on the inboard side of the elevator hinge bracket Figure 605)
(b)
Remove and discard the cotter pin on the clamped hinge only.
(c)
Loosen the castellated nut 2 turns on the clamped hinge only.
(d)
Pressurize the elevator hydraulic systems A and B
(AMM 27-31-00/201).
(e)
Set the stabilizer at 3 +/- 0.5 units of trim.
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.
(f) Use a device that can cause a blockage of the elevator to prevent its motion during the check.
NOTE: You can put a piece of wood between the elevator and the
____ airplane structure to prevent elevator movement.
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.
(g) Attach a mounting device to the elevator in line with the clamped hinge (Figure 605).
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A
737-300/400/500MAINTENANCE MANUAL
(h)
Put the dial indicator plunger directly over the top of the hinge centerline.
(i)
Adjust the dial indicator to zero once there is contact with the elevator tab hinge.
CAUTION: USE SUFFICIENT PADDING ON THE FORCE SCALE TO PREVENT
_______
DAMAGE TO THE CONTROL SURFACE.
(j) Use a force scale to apply a 7 +/- 0.5 pound force in the up direction. The force is to be applied in line with the plunger.
NOTE: Do not adjust the dial indicator.
____
(k)
Make a record of the travel shown on the dial indicator.
(l)
Slowly remove the force.
(m)
Use a force scale to apply a 7 +/- 0.5 pound force in the down direction. The force is to be applied as close as possible to the plunger without disturbing it.
(n)
Make a record of the travel shown on the dial indicatior.
(o)
Slowly remove the force.
(p)
Make sure that the sum of the two travel records is not more than 0.030 inches.
(q)
Repeat the previous 11 steps for each of the other three hinges (Slip hinges, do not loosen the nuts for this check).
(r)
Tighten the nut on the clamped hinge to 50-80 pound-inches.
(s)
Install the cotter pin in the clamped hinge.
S 226-037
(3)
Do a check of the elevator tab freeplay with the no. 1 hinge loose.
(a)
Make sure that the cotter pin is removed/discarded and the nut loosened at least 2 full turns on the number 1 hinge of the elevator tab.
(b)
Pressurize the elevator hydraulic systems A and B
(AMM 27-31-00/201).
(c)
Set the stabilizer at 3 +/- 0.5 units of trim.
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.
(d) Use a device that can cause a blockage of the elevator to prevent its motion during the check.
NOTE: You can put a piece of wood between the elevator and the
____ airplane structure to prevent elevator movement.
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ALL ú ú 02 Page 613 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
CAUTION:_______ BE VERY CAREFUL WHEN YOU INSTALL THE MOUNTING DEVICE. THE
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