(4)
Make sure that the work area is clean and clear of tool(s) and other items.
R (5) Close the left fan-cowl door (Ref. TASK 71-13-00-410-040). FOR 1000EM2 close the door 447AL.
(6) Close the door 195BB.
TASK 29-13-49-000-005
Removal of the Hydraulic Low-Pressure Switch Tube
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
WARNING : DO NOT TOUCH THE HYDRAULIC SYSTEM COMPONENTS FOR A SHORT TIME AFTER
_______ THE ENGINE IS SHUTDOWN. THE ENGINE COMPONENTS STAY HOT FOR SOME TIME AND CAN CAUSE INJURY.
CAUTION : DO NOT LET HYDRAULIC FLUID FALL ON THE ENGINE. UNWANTED HYDRAULIC
_______ FLUID MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FLUID CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
No specific protective covers
No specific warning notice(s)
No specific wrench
No specific access platform 1.50 m (4 ft. 11 in.)
No specific container 5 l (1.3208 USgal)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
29-00-00-864-001 Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs R 71-13-00-010-040 Opening of the Fan Cowl Doors 29-13-49-991-910 Fig. 407
3. Job Set-up
__________ Subtask 29-13-49-860-077
A. Aircraft Maintenance Configuration
(1)
Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001)
(2)
Depressurize the Yellow hydraulic reservoir (Ref. TASK 29-14-00-614-001).
(3)
Put warning notice(s) in position to tell persons not to pressurize the Yellow hydraulic system: - on the ground service panel 198CB.
(4)
Put warning notice(s) on the access door 195BB to tell persons not to pressurize the Yellow hydraulic reservoir.
Subtask 29-13-49-941-071
B. Safety Precautions
(1)
On the center pedestal, on the ENG panel 115VU:
-put warning notice(s) to tell persons not to start the engine.
(2)
Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3)
Put warning notice(s) in position to tell persons not to pressurize the Yellow hydraulic system:
-in the cockpit, on the HYD section of the overhead panel 40VU.
(4)
On the overhead maintenance panel 50VU:
-make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(5)
Put warning notice(s) to tell persons not to energize the FADEC 1(2).
(6)
Put a container below the hydraulic low-pressure switch tube (15) to collect the remaining fluid.
Subtask 29-13-49-010-067
C. Get Access
R (1) Open the left fan-cowl door (Ref. TASK 71-13-00-010-040): FOR 1000EM2 open the door 447AL.
(2)
Put the access platform in position at the engine.
Subtask 29-13-49-865-059
D.
Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU HYDRAULIC/Y HYD/PUMP ENG2/MONG 3700GD Q37
4. Procedure
_________
(Ref. Fig. 407/TASK 29-13-49-991-910)
Subtask 29-13-49-020-066
A. Removal of the Hydraulic Low-Pressure Switch Tube
(1) Disconnect the low-pressure switch tube (15) from the pressure hose/tube and let the fluid flow in the container.
NOTE : Use a second wrench to hold the fitting on the pressure
____ hose/tube when you loosen the coupling nut on the tube.
(2) Disconnect the low-pressure switch tube (15) from the hydraulic low-pressure switch.
NOTE : Use a second wrench to hold the pressure switch when you
____
loosen the coupling nut on the tube.
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