R 55-33-13-010-002 Opening/Removal of the Trailing Edge Access-Panels R 325EL, 325ER, 325DL, 325DR, 325CL, 325CR, 325BL and R 325BR
27-26-51-991-003 Fig. 403 3. Job Set-up
__________
Subtask 27-26-51-010-055-A
A. Get Access
(1) Put the adjustable platform in position.
R (2) Open the access panels 325BL (for the pressure switch on 3CC1) and/or R 325BR (for the pressure switch on 3CC2) at the trailing edge of the R vertical stabilizer (Ref. TASK 55-33-13-010-002).
Subtask 27-26-51-860-053-A
B. Aircraft Maintenance Configuration WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES
_______ ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(2)
Put the rudder pedals in the neutral position.
(3)
Make sure that the rudder trim control is set at the zero position. NOTE : Make sure that the trailing edge of the rudder is in line with
____
the red triangle on the tail cone.
(4)
Put the warning notices in the flight compartment to tell persons not to operate the flight controls.
(5)
Depressurize the Green and the Yellow hydraulic systems and put them in the maintenance configuration (Ref. TASK 29-00-00-864-001).
(6)
Make sure that the Blue hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
(7)
Depressurize the reservoir of the Green and the Yellow hydraulic system (Ref. TASK 29-14-00-614-001).
R R R R R (8) Put the warning notices in position to tell persons not to operate the Green, the Yellow and the Blue hydraulic systems: - in the cockpit on the hydraulic section 40VU on the overhead panel, - on the ground service panels of the Green, the Yellow and the Blue hydraulic systems.
R (9) Put a container below the yaw damper to collect the unwanted fluid.
R R R (10) Put the rigging pin 98D27207516330, part of the RIGGING PIN SET (98D27207516000), or the PIN - RIGGING (98D27207549000) in the yaw damper bellcrank.
Subtask 27-26-51-865-059
C. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AUTO FLT/FAC1/28VDC 5CC1 B04 49VU AUTO FLT/FAC1/26VAC 14CC1 B03 121VU AUTO FLT/FAC2/28VDC 5CC2 M19 121VU AUTO FLT/FAC2/26VAC 14CC2 M18
4. Procedure_________
(Ref. Fig. 403/TASK 27-26-51-991-003)
Subtask 27-26-51-020-053
A. Removal of the Pressure Switch
(1) Cut and remove the lockwire which safeties the screws (7).
(2) Remove the screws (7) and the washers (6).
(3) Pull the pressure switch (5) off the yaw damper (8).
(4) Remove and discard the O-ring (1) from the port.
(5) Remove and discard the extrusion rings (2),(4) and the O-ring (3) from the port.
Pressure Switch Figure 403/TASK 27-26-51-991-003
1EFF : 1 1R 1CES ALL 1 11 1 27-26-51 Page 437 Aug 01/98
TASK 27-26-51-400-004
Installation of the Pressure Switch
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
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