WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
 GEAR.

 1. Reason for the Job
__________________
 To make sure that the brake system is depressurized before you work on it.
 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 warning notices
 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 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
 the Ground Connector 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU) 29-23-00-860-002 Connection of the Isolation Coupling of the Power
 Transfer Unit (PTU)
 32-12-00-010-001 Open the Main Gear Doors for Access
 32-12-00-410-001 Close the Main Gear Doors after Access

R 32-44-11-200-001 Check Nitrogen Charge Pressure On Parking/Emergency
R Accumulator By Reading Gauge -------------------------------------------------------------------------------

REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
**ON A/C 001-049, 051-061, 101-105, 201-203,
 29-10-00-991-008 Fig. 201 R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
 29-10-00-991-008-A Fig. 201A
 **ON A/C ALL
 3. Job Set-up
__________
 Subtask 29-10-00-010-073

 A. Open the right main gear door (Ref. TASK 32-12-00-010-001).
 Subtask 29-10-00-860-097

 B. Aircraft Maintenance Configuration
 (1)
 Put the warning notices in position to tell persons not to pressurize the Yellow hydraulic system:

 -In the cockpit on the hydraulic section 40VU of the overhead panel,
 -On the ground service panel of the Yellow hydraulic system.

 (2)
 Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration (Ref. TASK 29-00-00-864-001).

 (3)
 Depressurize the reservoir of the Yellow hydraulic system (Ref. TASK 29-14-00-614-001).

 (4)
 Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. TASK 29-23-00-860-001).

 Subtask 29-10-00-865-080
 C. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU HYDRAULIC/HYD POWER/Y 3803GX N30 123VU Y HYD/ELEC/PUMP 3802GX AB06 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03
 4. Procedure
_________
 **ON A/C 001-049, 051-061, 101-105, 201-203,

 (Ref. Fig. 201/TASK 29-10-00-991-008) R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
 (Ref. Fig. 201A/TASK 29-10-00-991-008-A) R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 Subtask 29-10-00-864-053
 A. Depressurization WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE
_______
 LANDING GEAR.

 (1)
 On the brake manifold (3016GM):

 -Operate the pushbutton of the brake relief valve (3067GM) to release the pressure in the brake system.

 (2)
 On the gage (2585GM) of the brake accumulator (2582GM):

 -Make sure that the pressure decreases to the nitrogen fill pressure (Ref. TASK 32-44-11-200-001).

 Depressurization Pushbutton of the Brake Relief Valve (3067GM)
 Figure 201/TASK 29-10-00-991-008

R 1EFF : 001-049, 051-061, 101-105, 201-203, 1 29-10-00Page 215 1 1 May 01/05 1 1 1CES 1

 Depressurization Pushbutton of the Brake Relief Valve (3067GM)
 Figure 201A/TASK 29-10-00-991-008-A

R 1EFF : 062-099, 106-149, 151-199, 204-299, 1 29-10-00Page 216 1301-399, 401-499, 1Aug 01/05 1 1 1CES 1

R  **ON A/C 401-499, 
R  Subtask 29-10-00-864-053-A 
　
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