27-11-08
 ALL  ú ú 01 Page 214 ú Oct 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 832-035
 (5)  
Set the trim system at the center to keep the aileron at the neutral position:

 (a)  
Operate the trim switches until you can easily install rig pin A/S-2.

 (b)  
Do not remove rig pin A/S-2.

 S 862-036
 (6)  
Move the speed brake control lever to the DOWN position.

 S 862-037

 (7)  
Move the FLT CONTROL HYD POWER WING switches No. 1, 2, 3 and 4 on the P461 Pilot's Overhead Maintenance Panel to SHUTOFF.

 S 862-039

 (8)  
For the applicable system, open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P180 DC Power Distribution Panel
 1) 180H7 LATERAL CONT VALV SYS 1
 2) 180E6 LATERAL CONT VALV SYS 2
 3) 180H22 LATERAL CONT VALV SYS 3
 4) 180E21 LATERAL CONT VALV SYS 4

 S 862-040
 (9)  
Do this task: "Hydraulic System Depressurization"
 (AMM 29-11-00/201).

 S 862-041

 (10)
 If it is not necessary to have electrical power on the airplane, do this task: "Electrical Power Removal" (AMM 24-22-00/201).

 D.
Procedure

 S 022-042
 (1)  
Remove the CLCP filter (Fig. 201):

 (a)  
Put a container below the CLCP to catch fluid leakage.

 (b)  
Remove the filter cover.

 (c)  
Remove the filter from the CLCP.

 TASK 27-11-08-402-043
 5.  Central Lateral Control Package Filter Installation___________________________________________________
 A. Consumable Materials
 (1)  
D00054 Skydrol Assembly Lube - MCS 352

 (2)  
G00062 Fluid - Hydraulic, Fire Resistant - BMS 3-11

 B.
References

 (1)  
12-12-01/301, Hydraulic System

 (2)  
24-22-00/201, Manual Control

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

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-11-08
 ALL  ú ú 01 Page 215 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (4)  
32-00-30/201, Landing Gear Door Locks

 C.
Access

 (1)  
Location Zone
 135 Wing Landing Gear Well, LH
 136 Wing Landing Gear Well, RH

 D.
Procedure

 S 422-044
 (1)  
Install the central lateral control package (CLCP) filter
 (Fig. 201):

 (a)  
Lubricate the backup rings, packings and threads of the fitting with assembly lube or hydraulic fluid.

 (b)  
Install new backup rings and packing on the CLCP filter.

 (c)  
Install the filter cover.

 (d)  
Install the filter into the housing.

 (e)  
Tighten the filter cover to 85-115 pound-inches.

 (f)  
Install the lockwire.

 S 862-045
 (2)  
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).

 S 862-046

 (3)  
For the applicable system, remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P180 DC Power Distribution Panel
 1) 180H7 LATERAL CONT VALV SYS 1
 2) 180E6 LATERAL CONT VALV SYS 2
 3) 180H22 LATERAL CONT VALV SYS 3
 4) 180E21 LATERAL CONT VALV SYS 4

 S 862-047
 (4)  
Move the FLT CONTROL HYD POWER - WING VALVE switches No. 1, 2, 3 and 4 on the P461 Pilot's Overhead Maintenance Panel to NORM.

 S 862-049

 (5)  
Do this task to pressurize hydraulic systems No. 1 and 4 or 2 and 3: "Hydraulic System Pressurization" (AMM 29-11-00/201).

 S 792-056

 (6)  
Examine the filter cover for leakage after you operate the aileron through a minimum of two full cycles.

 E.
Put the Airplane Back to its Usual Condition

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