(2)
Remove the screws (12) and the washers (11).
(3)
Pull the servovalve (13) away from the yaw damper (7).
(4)
Remove and discard the base plate (10).
(5)
Remove and discard the lock washer (15) and the O-ring (14).
Servovalve and Solenoid Valve
Figure 402/TASK 27-26-51-991-002
1EFF : ALL 1 27-26-51 Page 418
1 1 Feb 01/98
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TASK 27-26-51-400-002
Installation of the Servovalve
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.
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______
CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING : PRESSURIZE ONLY THE HYDRAULIC SYSTEM(S) THAT IS (ARE) NECESSARY FOR
_______ THE TASK. ISOLATE THE OTHER HYDRAULIC SYSTEM(S) BEFORE YOU SUPPLY HYDRAULIC POWER TO THE AIRCRAFT.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific container
No specific warning notices
No specific adjustable access platform 6.0 m (19 ft. 8 in.)
R No specific Torque Wrench : range 0.00 to 1.20 m.daN
R (0.00 to 9.00 lbf.ft) 98D27207516000 1 RIGGING PIN SET 98D27207549000 1 PIN - RIGGING
B. Consumable Materials
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
No specific lockwire, corrosion-resistant steel, dia. 0.8 mm
(0.032 in.)
R Material No. 02-003 F NSA 307110 TYPE 4 HYDRAULIC FLUID (PHOSPHATE ESTER BASE) (Ref. 20-31-00)
Material No. 05-002 USA MIL-P-8116 PUTTY, ZINC CHROMATE GENERAL PURPOSE (Ref. 20-31-00)
C. Expendable Parts
-------------------------------------------------------------------------------
FIG.ITEM |DESIGNATION |IPC-CSN
-------------------------------------------------------------------------------
10 base plate 27-26-51 01 -060 14 O-ring 27-26-51 01 -040
D. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
22-63-00-710-001 Operational Test of the Yaw Damper Function 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 29-00-00-910-002 Safety Procedures of the Hydraulic System 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
the Ground Connector
55-33-13-010-002 Opening/Removal of the Trailing Edge Access-Panels 325EL, 325ER, 325DL, 325DR, 325CL, 325CR, 325BL and 325BR
55-33-13-410-002 Closing/Installation of the Trailing Edge Access-Panels 325EL, 325ER, 325DL, 325DR, 325CL, 325CR, 325BL and 325BR
27-26-51-991-001 Fig. 401 3. Job Set-up
__________
Subtask 27-26-51-860-055-A
A. Aircraft Maintenance Configuration
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(2)
Make sure that the adjustable access platform is in position at zone
325.
R (3) Make sure that the access panel 325BL (for the servovalve on 3CC1) or R 325BR (for the servovalve on 3CC2) is open (Ref. TASK 55-33-13-010-002).
(4)
Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
(5)
Make sure that the reservoirs of the Green and Yellow hydraulic systems are depressurized (Ref. TASK 29-14-00-614-001).
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