(2)
B00105 Abrasive - Scotch Brite No. 7447
(3)
C00064 Alodine - 1200 or 1200S
B.
References
(1)
06-42-00/201, Empennage Access Doors and Panels
(2)
24-22-00/201, Electrical Power - Control
(3)
27-38-00/501, Elevator Position Indicating System
(4)
27-61-00/201, Spoiler/Speedbrake Control System
(5)
51-21-04/701, Alodine
C.
Access
(1)
Location Zones 211/212 Control Cabin 311/312 Area Aft of Pressure Bulkhead to BS 1787.45 335/345 Horizontal Stabilizer, Rear Spar to Trailing Edge
(2)
Access Panels
311AL Forward Stabilizer Compartment
335BB/335DB Position Transmitter (Left)
345BB/345DB Position Transmitter (Right)
D.
Install the Position Transmitter (Fig. 402)
S 124-019
(1)
Prepare the mating surfaces between the position transmitter and the bracket with an abrasive pad, and do the step that follows:
(a)
Apply a layer of alodine (Ref 51-21-04) to the mating surfaces.
S 424-020
(2)
Install the position transmitter in the bracket assembly.
S 824-021
(3)
Turn the position transmitter in the bracket assembly to align the electrical zero mark on the position transmitter, and do the steps that follow (Section D-D):
(a)
Tighten the screws on the position transmitter to 25-32 pound-inches.
(b)
Make sure the position transmitter is aligned correctly and cannot turn in the bracket.
(c)
Apply sealant to the edges of the mating surfaces and to the edge of the fasteners.
S 824-022
(4)
Align the slot in the crank with the index mark on the position transmitter shaft, and do the steps that follow (Section C-C):
(a)
Put the crank on the position transmitter shaft such that the fastener is in the groove.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
(b) Install the bolt in the crank and tighten the bolt to 25-32 pound-inches.
S 124-023
(5)
Prepare the mating surfaces between the bracket assembly and the stabilizer with an abrasive pad and do the step that follows:
(a)
Apply a layer of alodine to the mating surfaces (Ref 51-21-04).
S 424-024
(6)
Attach the bracket assembly to the stabilizer and do the step that follows:
(a)
Apply sealant to the mating edges and the ends of the fasteners.
S 434-025
(7)
Connect the electrical connector to the position transmitter.
S 824-026
(8)
Adjust the length of the control rod to 9.30 | 0.02 inches
(236 +/- 0.5 mm).
NOTE: Make sure that you do not see more than 12 threads at the
____
adjusting nut.
S 434-027
(9)
Connect the control rod between the crank and the elevator.
S 824-028
(10)
Do the adjustment for the position transmitter (Ref 27-38-00).
S 714-029
(11)
Do the test for the position indicating system for the elevator (Ref 27-38-00)
E.
Put the Airplane Back to Its Usual Condition
S 864-030
(1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the overhead panel, P11:
(a)
11H17, FLT CONT SHUTOFF TAIL LEFT
(b)
11H18, FLT CONT SHUTOFF TAIL CTR
(c)
11H28, FLT CONT SHUTOFF TAIL RIGHT
(d)
11J13, ELEVATOR POS LEFT
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