TASK 29-13-49-400-006

 Installation of the Pressure Relief Valve Hose/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 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)

R No specific Torque Wrench : range 0.00 to 1.20 m.daN R (0.00 to 9.00 lbf.ft) No specific Torque Wrench : range 0.20 to 3.60 m.daN
 (2.00 to 26.00 lbf.ft)

 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
12-12-29-611-001 Fill the Hydraulic Fluid Reservoir with a Hand Pump 12-12-29-611-002 Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
 Configuration before Maintenance Action 29-13-00-710-002 Operational Test of the Yellow 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
R  71-13-00-410-040 Closing of the Fan Cowl Doors 29-13-49-991-911 Fig. 408 29-13-49-991-912 Fig. 409
 3. Job Set-up
__________
 Subtask 29-13-49-860-080
 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)
 Make sure that the Yellow hydraulic reservoir is depressurized (Ref. TASK 29-14-00-614-001).

 (3)
 Make sure that the warning notice(s) is (are) in position to tell persons not to pressurize the Yellow hydraulic system: - on the ground service panel 198CB.

 (4)
 Make sure that the warning notice(s) is (are) in position on the access door 195BB to tell persons not to pressurize the Yellow hydraulic reservoir.

 (5)
 Make sure that an access platform is in position at the engine 1(2).

 (6)
 Make sure that the fan-cowl door 447AL is open.

 Subtask 29-13-49-941-074
 B. Safety Precautions
 (1)
 On the center pedestal, on the ENG panel 115VU:

 -make sure that the warning notice(s) is (are) in position 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)
 Make sure that the warning notice(s) is (are) 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)
 Make sure that the warning notice(s) is (are) in position to tell persons not to energize the FADEC 1(2).

 (6)
 Make sure that a container is below the higher pressure relief valve hose/tube (25) to collect the remaining fluid.

 Subtask 29-13-49-865-062
 C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU HYDRAULIC/Y HYD/PUMP ENG2/MONG 3700GD Q37
 4. Procedure
_________
 (Ref. Fig. 408/TASK 29-13-49-991-911, 409/TASK 29-13-49-991-912) Subtask 29-13-49-420-059
 A. Installation of the Pressure Relief Valve Hose/Tube
 (1)
 Remove the protective covers from the higher pressure relief valve hose/tube (25), the lower pressure relief valve tube (30) and the pressure relief valve interface.
　
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