(2)
Depressurize the reservoir of the Yellow hydraulic system (Ref. TASK 29-14-00-614-001).
(3)
Push the pressure release button on the pressure relief valve 3067GM to depressurize the alternate brake system.
(4)
Disconnect the isolation coupling of the PTU (Ref. TASK 29-23-00-860-001).
(5)
Make sure that the pressure on the gauge 2585GM decreases to the fill pressure of the accumulator 2582GM (Ref. TASK 32-44-11-200-001).
Subtask 32-43-14-010-050
B. Get Access
(1)
Open the right MLG door (Ref. TASK 32-12-00-010-001).
(2)
Put an access platform in position at the access door 811.
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(3) Open the access door 811.
Subtask 32-43-14-941-050
C. Safety Precautions
(1) Put the warning notices in position to tell persons not to pressurize the Yellow hydraulic system: - on the panel 40VU in the cockpit, - on the ground service panel of the Yellow hydraulic system.
Subtask 32-43-14-865-050
D. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY 4GG M36 121VU HYDRAULIC/BRAKING AND STEERING/SYS2/CTL 3GG M35 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/CTL 1GG M34 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY 2GG M33 121VU HYDRAULIC/HYD POWER/Y 3803GX N30 121VU HYDRAULIC/Y HYD/PUMP ENG2/MONG 3700GD Q37 121VU HYDRAULIC/Y HYD/PUMP ENG2/CTL 3701GD Q36 123VU Y HYD/ELEC/PUMP 3802GX AB06 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03
Subtask 32-43-14-680-050
E. Drain the Alternate Brake Reservoir
(Ref. Fig. 401/TASK 32-43-14-991-004)
(1)
Put a container near the alternate brake reservoir (2624GM).
(2)
Remove the plug (33) and the packing (32) from the valve (31).
(3)
Turn the knob fully counterclockwise to make sure that the striker is fully rearward and install the FILLER ADAPTOR TMH DI43-32-00 or equivalent on the valve (31).
(4)
Connect a bleed hose on the filler adaptor and put the other end in the container.
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Hydraulic Reservoir 2624GM
Figure 401/TASK 32-43-14-991-004
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(5) Use the knob on the filler adaptor to move the striker forward to bleed the alternate brake reservoir.
NOTE : You must do this operation with a smooth movement to prevent
____
damage to the valve mechanism.
(6)
When the alternate brake reservoir is bled, turn the knob fully counterclockwise to move the striker rearward.
(7)
Remove the bleed hose, the filler adaptor and the container.
(8)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(9)
Install the packing (32) and the plug (33) on the valve (31).
4. Procedure
_________
R R (Ref. Fig. 402/TASK 32-43-14-991-005-A) R
Subtask 32-43-14-020-051-A
A. Removal of the Dual-Valve 2577GM
(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(2)
Put the access platform in position in the opening of the landing gear door.
(3)
Put the container below the dual valve 2577GM to collect the hydraulic fluid leakage.
(4)
Disconnect the elbow assemblies (1) from the dual valve (25).
(5)
Disconnect the elbow assembly (26) from the reducer (9).
(6)
Disconnect the hydraulic pipe (4) from the reducer (3).
(7)
Disconnect the hydraulic pipe (7) from the reducer (6).
(8)
Disconnect the hydraulic pipes (10) from the reducers (9).
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Dual-Valve 2577GM Alternate Brake-Distribution R Figure 402/TASK 32-43-14-991-005-A
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