757
MAINTENANCE MANUAL
(5) S 434-016Install the bolts to attach the LSTM to the mounting flange.
(6) S 284-017Make sure the maximum electrical resistance is 0.0025 ohms (Ref 20-10-21).
(7) S 624-018Apply Iridite 14-2 to bare mating surfaces that you can see.
(8) S 434-019Connect the electrical connector.
(9) S 864-020Remove the DO-NOT-CLOSE tags and close these circuit breakers on the overhead panel, P11: (a) 11B19, STAB TRIM ALT (IF INSTALLED) (b) 11C12, STAB TRIM SHUTOFF LEFT (c) 11C13, STAB TRIM SHUTOFF RIGHT (d) 11F19, STAB POS MOD CENTER (e) 11G15, STAB POS MOD LEFT (f) 11G24, STAB POS MOD RIGHT (g) 11H10, STAB TRIM POS IND L or STAB TRIM LEFT POS IND (h) 11H19, STAB TRIM POS IND RIGHT
S 864-021
(10)
Put the RIGHT and CENTER STAB TRIM SHUTOFF valve switches on the control stand panel, P10, to the NORM position.
S 824-022
(11)
Do the adjustment procedure for the LSTM (Ref 27-41-00).
S 714-023
(12)
If you replaced the middle LSTM, do the Stabilizer Takeoff Warning Test (Ref 27-48-00).
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757 MAINTENANCE MANUAL
S 714-024
(13) If you replaced the left or right LSTM,
do the tests that follow:
NOTE: Use only the center hydraulic system to do a test for the
____ left module. Use only the right hydraulic system to do a test for the right module.
(a)
Do the stabilizer position module (SPM) BITE procedure (Ref 27-48-00).
(b)
Do the Electrical Travel Limits Test for the stabilizer system (Ref 27-41-00).
(c)
Do the Stabilizer Trim Position Indicating System Test (Ref 27-48-00).
E.
Put the Airplane Back to Its Usual Condition
S 864-025
(1)
Remove electrical power, if it is not necessary (Ref 24-22-00).
S 414-026
(2)
Close the access door for the forward stabilizer compartment, 311AL (Ref 06-42-00).
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757 MAINTENANCE MANUAL
STABILIZER POSITION MODULE - REMOVAL/INSTALLATION
_________________________________________________
1. General_______
A. This procedure contains steps to remove and install the stabilizer position modules (SPMs). The steps to remove and install the three SPMs are the same.
B. There are three SPMs are located in the electrical systems card file panel, P50. They are electrostatic sensitive devices.
TASK 27-48-03-024-001
2. Remove the Stabilizer Position Module (SPM)___________________________________________
A. References
(1)
06-41-00/201, Fuselage Access Doors and Panels
(2)
20-10-01/401, E/E Rack Mounted Components
(3)
20-41-01/201, Electrostatic Discharge Sensitive Devices
(4)
24-22-00/201, Electrical Power - Control
(5)
27-61-00/201, Spoiler/Speedbrake Control System
B.
Access
(1)
Location Zones
119/120 Main Equipment Center
211/212 Control Cabin
(2)
Access Panel
119BL Main Equipment Center
C.
Remove the SPM (Fig. 401)
S 044-002
WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE ALL
_______ PERSONS AND EQUIPMENT AWAY FROM THE SPOILERS. THE SPOILERS CAN RETRACT QUICKLY AND CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Do the deactivation procedure for the spoilers (Ref 27-61-00) or move all persons and equipment away from the spoilers.
(2)
Remove electrical power (Ref 24-22-00).
S 864-004
(3)
Open these circuit breakers on the overhead panel, P11, and attach DO-NOT-CLOSE tags:
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