S 492-028
(1)
Install the rig pin E-5 through the input arm into the elevator feel computer casing.
S 822-071
(2)
If you can not install the rig pin manually, adjust the input rod:
(a)
Remove the bolt (3) to disconnect the input rod (2) from the input arm (6).
(b)
Install the rig pin E-5.
(c)
Loosen the checknut (18) on the input rod.
(d)
Adjust the input rod end until you can install the bolt (3) easily through the input arm and the input rod.
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747-400
MAINTENANCE MANUAL
(e)
Make sure the rod end put extends more than half the distance across the safety hole in the input rod.
(f)
Install the bolt (3), washer (4), and nut (5) to connect the input rod to the input arm. 1) Tighten the nut (5).
(g)
Tighten the checknut (18).
S 092-029
(3)
Remove the rig pin E-5.
S 862-030
(4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P7, Overhead Circuit Breaker Panel
1) 7E7, L STAB TRIM S/O VLV
2) 7E20, R STAB TRIM S/O VLV
S 862-031
(5)
Set the STAB TRIM 2 and 3 switches on the control stand to ON.
S 712-032
(6)
Do a test of the elevator feel computer (Ref paragraph 5.).
TASK 27-31-14-712-033
5. Operational Test - Elevator Feel Computer
_________________________________________
A. Reference
(1)
AMM 06-09-05/201, Body Section 48 Access Doors and Panels
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 27-41-00/201, Horizontal Stabilizer Trim Control System
(4)
AMM 29-11-00/201, Main Hydraulic Supply System
(5)
AMM 34-11-00/201, Pitot Static System
(6)
AMM 22-10-00/501, Autopilot/Flight Director System
B.
Access
(1)
Location Zone
311 Area Aft of Pressure Bulkhead, LH
312 Area Aft of Pressure Bulkhead, RH
(2)
Access Panel 312A Horizontal Stabilizer Jackscrew Access Door
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747-400 MAINTENANCE MANUAL
C. Prepare for Test
S 862-034
(1)
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
S 212-036
(2)
Make sure that the horizontal stabilizer is in the neutral rig position (AMM 27-41-00/201).
S 862-037
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(3)
Do this task to pressurize the hydraulic systems No. 2 and No. 3: "Supply Hydraulic Power" (AMM 29-11-00/201).
S 862-038
(4)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P6, Main Power Distribution Panel
1) 6E1, FLAP CONT PRI TE AC
2) 6E2, FLAP CONT PRI TE DC
3) 6L19, TE FLAP ELEC CONT OTBD
4) 6L20, TE FLAP ELEC CONT INBD
(b)
P415, Power Distribution Center - Right Panel 1) 415A32, TE FLAP ELEC INBD 2) 415M38, TE FLAP ELEC OTBD
S 862-039
CAUTION: DO NOT PRESSURIZE THE AUXILIARY PITOT SYSTEM TO MORE THAN 4.00
_______ PSIG (OR 395 KNOTS). MAKE SURE THE PRESSURE CHANGE IS LESS THAN 5000 FEET (OR 300 KNOTS IAS) FOR EACH MINUTE FOR THE PITOT SYSTEM. THOSE ARE TO PREVENT THE DAMAGE TO THE ELEVATOR FEEL COMPUTER WHICH IS A VERY EASILY DAMAGED INSTRUMENT.
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