(2)
Access Panel 334LBL Horizontal Stab. Trailing Edge Access Panel, LH 344LBR Horizontal Stab. Trailing Edge Access Panel, RH 336DBL Leading Edge Actuator Access Panel, LH 346DBR Leading Edge Actuator Access Panel, RH
C.
Adjust the Outboard Elevator PCP
S 012-033
(1) Remove the lower skin panel 334LB or 344LB of the stabilizer trailing edge if it is necessary.
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A
747-400
MAINTENANCE MANUAL
TRAILING EDGE IN LINE WITH STABILIZER CENTERLINE ON THE INDEX PLATE 1` UP ELEV (INBD
Outboard Elevator Neutral
Figure 203 (Sheet 1)
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A 747-400 MAINTENANCE MANUAL
OUTBOARD ELEVATOR
1.
INPUT
2.
BOLT
CONTROLSEE B 1.29 INCHES 3. WASHER ROD MAX
4. NUT MAX
1.29 INCHES 5. CHECKNUT
7. CHECKNUT
6. SLEEVE
INPUT CONTROL ROD SAFETY DIMENSIONS
B
SEE C BALLSCREW STOP
"B" DIMENSION
BALLNUT STOP
A
C
Outboard Elevator Neutral
Figure 203 (Sheet 2)
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A
747-400 MAINTENANCE MANUAL
S 862-110
CAUTION:_______ MAKE SURE THE AIRPLANE IS NOT ON JACKS DURING THE ADJUSTMENT OR
THE TEST OF AN OUTBOARD ELEVATOR PCP. A JACK OR TAIL STAND AT
TAIL JACK POINT III IS PERMITTED WHEN THE LOAD IS LESS THAN
2000 POUNDS. THIS IS TO PREVENT THE POSSIBLE DAMAGE TO
EQUIPMENT.
(2)
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
S 862-036
(3)
Set all FLT CONTROL HYD POWER TAIL switches on the P461, Pilots' Overhead Maintenance Panel in NORM.
S 862-037
WARNING: MOVE ALL PERSONS AND EQUIPMENT AWAY FROM THE ELEVATORS BEFORE
_______ YOU SUPPLY THE HYDRAULIC POWER. THE ELEVATOR CAN MOVE QUICKLY AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(4)
Pressurize the hydraulic systems No. 1 and 2 (left elevator), or 3 and 4 (right elevator)(AMM 29-11-00/201).
S 862-112
(5)
Pressurize No. 1 and 2 auxiliary pitot systems to 4.7 PSIG max (AMM 34-11-00/201).
S 712-038
(6)
Examine the elevators movement:
(a)
Move the elevators up and down until all elevators move smoothly through the full travel range.
(b)
Move the control column to the neutral detent position.
S 862-040
(7)
Set the stabilizer to the neutral rig position (AMM 27-41-00/201).
S 222-041
(8)
Align the trailing edges of the inboard elevators with the silver band on the index plate (Fig. 203).
S 822-104
(9)
If you cannot align the inboard elevator, adjust the inboard elevator PCP (AMM 27-31-07/201).
S 222-042
(10)
Align the trailing edges of the outboard elevator and the inboard elevator (Fig. 203).
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