(b)
 Apply SPECIAL MATERIALS (Material No. 05-002) to the threads of the studs (42) and to the threads of the bolts (3).

 (c)
 Attach the POB (41) and the valve block assembly (23) to the differential gearbox (40) with:

 -
the washers (2),

 -
the bolts (3),

 -
the washers (25).

 (d) TORQUE the bolts (3) and the nuts (24) to between 1.40 and 1.54 m.daN (10.32 and 11.35 lbf.ft).

 (12)
 Connect the hydraulic lines.

 (a)
 Remove the blanking caps and the blanking plugs from the line ends (8),(10),(11) and from the PCU (1).

 (b)
 Make sure that the hydraulic line end-fittings are serviceable.

 (c)
 Apply HYDRAULIC FLUIDS (Material No. 02-003) to the threads of the line end-fittings.

 1EFF : ALL 1 27-54-52Page 414 1 1 May 01/04R 1 1 1CES 1

 (d)
 Connect the case drain line (8).

 (e)
 TORQUE the union nut of the case drain line (8) to between 1.5 and 1.7 m.daN (11.06 and 12.53 lbf.ft).

 (f)
 Connect the seal drain line (10) and attach it with the new tie wrap (9).

 (g)
 Connect the hydraulic lines (11).

 (h)
 TORQUE the union nuts of the hydraulic lines (11) to between 5.4 and 5.9 m.daN (39.82 and 43.51 lbf.ft).

 (13) Connect the electrical connector.
 (a)
 Remove the blanking caps from the electrical connector (22).

 (b)
 Make sure that the electrical connectors are clean and in the correct condition.

 (c)
 Connect the electrical connector (22) to the valve block assembly (23).

 Subtask 27-54-52-860-051
 C. Preparation for the Test
 (1)
 Remove the PIN RIGGING-FLAPS from the left and right flap track positions 1.

 (2)
 Pressurize the reservoirs of the Green and the Yellow hydraulic systems (Ref. TASK 29-14-00-614-002).

 (3)
 Make sure that the level of the fluid in the relevant hydraulic reservoir is correct. Add fluid as necessary (Ref. TASK 12-12-29-611-001) or (Ref. TASK 12-12-29-611-002).

 (4)
 Remove the LOCKING TOOL - FLAP/SLAT CONTROL LEVER (Ref. TASK 27-00-00-080-002) from the slat/flap control lever.

 (5)
 Remove the warning notice(s).

 (6)
 Make sure that the work area is clean and clear of tool(s) and other items.

 Subtask 27-54-52-865-052
 D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 6CV, 8CV
 Subtask 27-54-52-710-050
 E. Test
 (1)
 Do the operational test of the flap system (Ref. TASK 27-54-00-710-001).

 (2)
 Make sure that there are no leaks and that no fluid comes out of the seal drain line (10).

 5. Close-up
________ Subtask 27-54-52-860-053
 A. Put the aircraft back to the serviceable condition.
 (1)
 Make sure that the level of the fluid in the relevant hydraulic reservoir is correct. Add fluid as necessary (Ref. TASK 12-12-29-611-001) or (Ref. TASK 12-12-29-611-002).

 (2)
 Remove the container from below the PCU (1).

 (3) Remove the access platform(s). Subtask 27-54-52-410-050
 B. Close the main doors of the main gear (Ref. TASK 32-12-00-410-001).

 VALVE BLOCK - FLAP PCU (23CV,24CV) - REMOVAL/INSTALLATION
_________________________________________________________
 TASK 27-54-53-000-001
 Removal of the Valve Blocks 23CV, 24CV of the Power Control Unit (Flap)
 WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
 GEAR.

 WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______
 CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.

 WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______
 START A TASK ON OR NEAR:

 -
THE FLIGHT CONTROLS

 -
THE FLIGHT CONTROL SURFACES

 -
THE LANDING GEAR AND THE RELATED DOORS

 -COMPONENTS THAT MOVE.
 NOTE : The removal procedure for the valve block 23CV is specified.The removal
____
 procedure for the valve block 24CV is almost the same.If there are
 differences in the procedures they are specified.

 1. Reason for the Job
__________________
　
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