(2)
The installation of the replacement feel computer.
TASK 27-31-37-004-001
2. Elevator Feel Computer Removal______________________________
A. Special Tools and Equipment
(1) Rig Pin (E-4) - 0.309/0.311 inch diameter, 4.5 |0.25 inches long, (MS20392-4)
NOTE: The rig pin is part of the rig pin kit F70207-69, -78 or -83.
____
(2)
F80055-1 - Trammel Bar
(3)
F80153-1 - Elevator Feel Computer Safety Pin
SEE A
"B"
ACTUATOR
DIM 1
TRAMMEL BAR
NOTE:____ THE STABILIZER TRIM JACKSCREW IS SHOWN WITH THE STABILIZER LEADING EDGE AT ZERO DEGREES FWD
1 CENTER OF THE UPPER AND LOWER GIMBAL PINS THE "B" DIMENSION IS MEASURED BETWEEN THE A
Stabilizer Trim Jackscrew Setting Figure 401
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A
737-300/400/500
MAINTENANCE MANUAL
1. STABILIZER PUSHROD
SEE A SEE B
2. CHECKNUT
4. SPRING
3. INPUT ARM
LINE STATIC PITOT LINE PITOT LINE LINE STATIC
FWD
A
1. STABILIZER PUSHROD
3. INPUT ARM
FWD
RIG PIN
B
Elevator Feel Computer Installation Figure 402
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B.
C.
D.
E.
A
737-300/400/500MAINTENANCE MANUAL
Standard Tools and Equipment
(1)
Spring Scale - 0 to 50 pounds capacityReferences
(1)
27-31-00/201, Elevator and Tab Control SystemAccess
(1)
Location Zone 702 Tail Compartment Access Door
(2)
Access Panels
3701 Stabilizer Trim Access DoorProcedure
S 864-017
(1)
Do this task: "Remove the Pressure from the Elevator hydraulic Systems A and B" (Ref 27-31-00/201).
S 014-018
(2)
Open the access door 3701.
S 864-019
(3)
Set the B dimension at 41.57 |0.01 inches (Fig. 401).
S 864-020
(4)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P6 Circuit Breaker Panel
1) AUTO FLT CONT SYS B
2) INDICATOR MASTER DIM BUS
3) STABILIZER TRIM ACTUATOR
4) STABILIZER TRIM CONT
S 494-016
CAUTION: YOU MUST INSTALL THE SAFETY PIN IN THE RIG PIN HOLE OF THE FEEL
_______ COMPUTER. IF THE FEEL COMPUTER IS NOT ATTACHED TO THE INPUT ARM, IT CAN BE EASILY DAMAGED WHEN IT IS REMOVED.
(5) Install the safety pin in the input arm (3) and the feel computer.
S 024-015
CAUTION: DO NOT LIFT THE FEEL COMPUTER BY THE INPUT ARM, OR APPLY A
_______ TORQUE OF MORE THAN 300 POUND-INCHES TO THE INPUT ARM. THE FEEL COMPUTER IS VERY SENSITIVE AND IT CAN BE EASILY DAMAGED.
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737-300/400/500MAINTENANCE MANUAL
(6)
Remove the feel computer (Fig. 402):
(a)
Disconnect the spring (4) from the feel computer.
(b)
Remove the bolt that attaches the stabilizer pushrod (1) to the input arm (3).
(c)
Disconnect the electrical connector D756.
(d)
Remove the two pneumatic pitot lines from the feel computer.
