(2)
AMM 20-10-24/201, Rig Pins
(3)
AMM 24-22-00/201, Electrical Power - Control
(4)
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System
C. Access
(1)
Location Zone 324 Vertical Stabilizer, Rear Spar to Trailing Edge
(2)
Access Panel
324AL Body to Fin Seal
D. Prepare for Removal
S 864-007
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-006
(2)
Remove the pressure from the left, center and right hydraulic systems (AMM 29-11-00/201).
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757 MAINTENANCE MANUAL
S 864-005
(3)
Set the L, C, and R FLT CONTROL SHUTOFF switches on the P61 panel in the OFF position.
S 864-004
(4)
Set the two STAB TRIM switches on control stand panel P10 in the CUTOUT position.
S 864-003
(5)
Set the two F/D switches on the MCP in the OFF position.
S 864-002
(6)
Open these circuit breakers on the overhead circuit breaker panel, P11, and attach DO-NOT-CLOSE tags:
(a)
11C12, STAB TRIM SHUTOFF LEFT
(b)
11C13, STAB TRIM SHUTOFF RIGHT
(c)
11H17, FLT CONT SHUTOFF LEFT
(d)
11H18, FLT CONT SHUTOFF CENTER
(e)
11H28, FLT CONT SHUTOFF RIGHT
(f)
For the left servo:
1) 11E17, FLT CONT CMPTR PWR LEFT
2) 11E18, FLT CONT CMPTR SERVO LEFT
(g)
For the center servo:
1) 11E20, FLT CONT CMPTR PWR CENTER
2) 11E21, FLT CONT CMPTR SERVO CENTER
(h)
For the right servo:
1) 11E35, FLT CONT CMPTR PWR RIGHT
2) 11E36, FLT CONT CMPTR SERVO RIGHT
S 014-008
(7) Remove the access panel 324AL, on the base of the vertical fin (left side), to get access to the Autopilot Rollout Guidance Servos (AMM 06-42-00/201).
E. Remove the Autopilot Rollout Guidance Servo
S 484-017
(1)
Install the rig pin R3 in the aft quadrant (Refer to Fig. 401).
S 034-016
(2)
Disconnect the electrical connector from the Autopilot Rollout Guidance Servo.
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MAINTENANCE MANUAL
A/P ROLLOUT GUIDANCE SERVOS (3)
SEE B
SEE A
RIG PIN HOLE R-3
ACCESS PANEL 324AL
7. ROD
AFT QUADRANT; FEEL, CENTERING AND TRIM MECHANISM
A
3.
BOLT
4.
BUSHING
ELECTRICAL
CONNECTOR 5. WASHER
1. WASHER (REF) 6. NUT
2. BOLT
12. PACKING
13. UNION 7. ROD
SOLENOID VALVE
NO. 2 (REF)
ELECTROHYDRAULIC SERVO VALVE (REF)
8. JAMNUT
OUTPUT
CRANK
(REF)
SOLENOID VALVE
9. FILTER NO. 1 (REF) 10. PACKING
HYDRAULIC 11. UNION
RETURN LINE HYDRAULIC(REF) PRESSURE LINE
B
(REF)
Autopilot Rollout Guidance Servo (ARGS)
Figure 401
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