-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
**ON A/C ALL Post SB 32-1215 For A/C 001-049,051-099,101-105,151-199,201-210, 12-14-32-991-003-A Fig. 303A **ON A/C ALL
3. Job Set-up
__________ Subtask 12-14-32-941-052
A. Safety Precautions
(1)
Put the safety barriers in position.
(2)
Put a warning notice on the panel 198CB to tell persons not to pressurize the Yellow hydraulic system.
Subtask 12-14-32-860-052
B. Aircraft Maintenance Configuration
(1)
On panel 400VU, make sure that the L/G control-lever is in the DOWN position.
(2)
On panel 110VU, make sure that the GRAVITY GEAR EXT handle is in the stowed position.
(3)
Disconnect the Isolation Coupling of the Power Transfer Unit (PTU) (Ref. TASK 29-23-00-860-001).
(4)
Make sure that pressure in the brake accumulator of the Yellow hydraulic system is released.
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Subtask 12-14-32-865-050
C. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
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
4. Procedure
_________ (Ref. Fig. 301/TASK 12-14-32-991-001, 302/TASK 12-14-32-991-002) **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210,
(Ref. Fig. 303/TASK 12-14-32-991-003) **ON A/C ALL Post SB 32-1215 For A/C 001-049,051-099,101-105,151-199,201-210,
(Ref. Fig. 303A/TASK 12-14-32-991-003-A) **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210,
Subtask 12-14-32-614-052
A. Nitrogen Filling of the Yellow Hydraulic System, Brake Pressure
Accumulator
WARNING : DO NOT PUT COMPRESSED GAS IN CONTACT WITH YOUR SKIN. THE GAS
_______ CAN GO THROUGH THE SKIN AND MAKE BUBBLES IN THE BLOOD. THIS CONDITION CAN KILL YOU.
(1) Loosen the charging valve nut (2).
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Brake Accumulator - Filling System Schematic Figure 301/TASK 12-14-32-991-001
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Brake Accumulator Assembly - Detail and Location Figure 302/TASK 12-14-32-991-002
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Brake Accumulator - Pressure Graph
Figure 303/TASK 12-14-32-991-003
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Yellow System Brake Accumulator - Pressure Graph Figure 303A/TASK 12-14-32-991-003-A
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(2) Open the control valve (F) slowly and fill the brake accumulator to the correct pressure for the ambient temperature. Make sure that the fill pressure is as follows:
-----------------------------------------------------------------------------| deg. C | deg. F | "P" bar | "P" psi | |-----------------------------------------------------------------------------| | -20 | -4 | 87 | 1260 | | -10 | +14 | 90 | 1310 | | 0 | +32 | 93 | 1350 | | +10 | +50 | 97 | 1400 | | +20 | +68 | 100 | 1450 | | +30 | +86 | 104 | 1510 | | +40 | +104 | 107 | 1550 | | +50 | +122 | 110 | 1600 | | +60 | +140 | 114 | 1650 | -----------------------------------------------------------------------------
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