(c)
Attach the POB (41), the hydraulic motor (7) and the valve block assembly (23) to the differential gearbox (40) with:
-
the washers (2),
-
the bolts (3),
-
the washers (25),
-
the nuts (24).
(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).
R R R R R R (8) Do a bonding test between the main bonding point of the power control unit and the: - POB flange, - hydraulic motor flange, - valve block assembly flange. The resistance must not be more than 20 milliohms.
R (9) Connect the hydraulic lines.
(a) Remove the blanking caps from the line ends (8),(10),(11).
(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.
(d) Remove the blanking plugs from the PCU (1).
(e) Connect the seal drain line (10) and attach it with the new tie wrap (9).
(f) Connect the case drain line (8).
(g) 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).
(h) Connect the hydraulic lines (11).
(i) 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).
R (10) Connect the electrical connector (22).
(a) Remove the blanking caps from the electrical connectors (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 27-84-53-860-053
C. Preparation for the Test
(1)
Remove the LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT from the right slat transmission.
(2)
Remove the LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT from the left slat transmission.
(3)
Pressurize the reservoirs of the Green and the Blue hydraulic systems (Ref. TASK 29-14-00-614-002).
(4)
Make sure that the level of 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).
(5)
Remove the LOCKING TOOL - FLAP/SLAT CONTROL LEVER (Ref. TASK 27-00-00-080-002) from the slat/flap control lever.
(6)
Remove the warning notice(s).
(7)
Make sure that the work area is clean and clear of tool(s) and other items.
Subtask 27-84-53-865-052
D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 5CV, 7CV.
Subtask 27-84-53-710-050
E. Test
(1)
Do the operational test of the slat system (Ref. TASK 27-84-00-710-001).
(2)
Make sure that there are no leaks and that no fluid comes out of the seal drain line.
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5. Close-up
________ Subtask 27-84-53-860-056
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 27-84-53-410-050
B. Close the main doors of the main gear (Ref. TASK 32-12-00-410-001).
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TASK 27-84-53-000-002
Removal of the Solenoid Valves of the Power Control Unit (Slat)
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 retract solenoid valve of the valve block
____ 25CV is given. The removal procedure for the extend solenoid valve, the brake solenoid valve and the solenoid valves of the valve block 26CV are almost the same. The differences in the procedures are given.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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