(b)  
Make sure the distance between the inboard elevator trailing edge and the neutral index is 28.29-29.30 inches.

 (c)  
Make sure the difference between the inboard and outboard elevators trailing edges is 1.94-2.98 inches.

 (d)  
If the difference between the inboard and outboard elevators trailing edges is not in the limit, then do the Inboard Elevator Adjustment (Ref Paragraph 3).

 (e)  
Move the control columns aft to the stop and hold.

 (f)  
Make sure the distance between the inboard elevator trailing edge and the neutral index is 42.75-43.77 inches.

 (g)  
Make sure the difference between the inboard and outboard elevators trailing edges is 2.29-3.30 inches.

 (h)  
If the difference between the inboard and outboard elevators trailing edges is not in the limit, then do the Inboard Elevator Adjustment (Ref Paragraph 3).

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A
747-400 MAINTENANCE MANUAL
 (i)  Release the control column and let it move to the center.
 S 792-135
 (3)  
Examine the inboard elevator PCP installation for a hydraulic leak.

 E.
Put the Airplane to its Usual Condition

 S 862-068
 (1)
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 862-069
 (2)  
Set all FLT CONTROL HYD POWER TAIL switches on the P461, Pilots' Overhead Maintenance Panel in NORM.

 S 862-070

 (3)  
If the hydraulic power is not necessary, do this task: "Remove Hydraulic Power" (AMM 29-11-00/201).

 S 612-071

 (4)  
Fill the hydraulic reservoirs if it is necessary (AMM 12-12-01/301).

 S 862-073

 (5)  
If the electrical power is not necessary, do this task: "Remove Electrical Power" (AMM 24-22-00/201).

 TASK 27-31-07-002-074
 6.  Inboard Elevator PCP Filter Removal___________________________________
 A. Standard Tools and Equipment
 (1)  
Bucket - 1 gallon capacity (for hydraulic fluid)

 B.
References

 (1)  
AMM 06-09-06/201, Stabilizer and Elevator Access Doors and Panels

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System

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A

747-400
MAINTENANCE MANUAL

RING 5. BACKUP 
6. PACKING 
RING 5. BACKUP 
RING 3. BACKUP 
RING 3. BACKUP 4. PACKING  CAP 2. FILTER  NO. 1 1. FILTER  SEE  A  FWD 

1. FILTER NO. 2
FWD
FILTER NO. 2 INSTALLED SAME AS FILTER NO. 1
A
Inboard Elevator PCP Filter Installation Figure 204
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400
MAINTENANCE MANUAL

 (4)  
AIPC 27-31-07, Fig. 3

 C.
Access

 (1)  
Location Zone
 335 Elevator Inboard, LH
 345 Elevator Inboard, RH

 (2)  
Access Panel
 334HBL Inboard Elevator Actuator Access Panel
 344HBR Inboard Elevator Actuator Access Panel

 D.
Prepare for Removal

 S 862-075
 (1)  
　
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