S 215-107
(12)
Make sure that the indications that follow come on:
(a)
Red CONFIG light on the P2 panel
(b)
Captain's and first officer's master warning lights on the P7 panel
(c)
EICAS red warning message (STABILIZER)
(d)
Aural warning siren.
S 865-108
(13) Move the horizontal stabilizer such that it is between 2.0 and 7.0 units of trim on the stabilizer trim position indicator (greenband range).
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MAINTENANCE MANUAL
S 215-109
(14)
Make sure that all of the warnings stop as soon as the stabilizer moves into the greenband range.
S 865-110
(15)
Release the takeoff warning test switch on the P61 panel.
S 865-111
(16)
Remove the power from the right and center hydraulic systems (AMM 29-11-00/201).
S 865-112
(17)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
S 415-113
(18)
Close the forward stabilizer compartment access door, 311AL (AMM 06-42-00/201).
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MAINTENANCE MANUAL
STABILIZER TRIM LIMIT SWITCH AND POSITION TRANSMITTER MODULE -
____________________________________________________________ REMOVAL/INSTALLATION
____________________
1. General_______
A. This procedure contains steps to remove and install the limit switch and position transmitter modules (LSTMs). The steps to remove and install the left, center, and right LSTMs are the same. The test for each LSTM is different.
TASK 27-48-01-024-001
2. Remove the Limit Switch and Position Transmitter Module (LSTM)______________________________________________________________
A. References
(1)
06-42-00/201, Empennage Access Doors and Panels.
(2)
24-22-00/201, Electrical Power - Control
(3)
29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
B.
Access
(1)
Location Zones 211/212 Control Cabin 311/312 Area Aft of Pressure Bulkhead to BS 1787.45
(2)
Access Panel
311AL Forward Stabilizer Compartment
C.
Prepare for the Removal
S 864-002
(1)
Supply electrical power (Ref 24-22-00).
S 864-003
(2)
Open these circuit breakers on the overhead panel, P11, and attach DO-NOT-CLOSE tags:
(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
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A 757 MAINTENANCE MANUAL
AFT VIEW
A-A
Limit Switch and Position Transmitter Module Installation
Figure 401 (Sheet 1)
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