(7)
Make sure that the isolation coupling of the Power Transfer Unit (PTU) is disconnected (Ref. TASK 29-23-00-860-001).
Subtask 29-34-11-865-051
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/LOW/LVL/IND 1832GQ N32 121VU HYDRAULIC/HYD POWER/Y 3803GX N30 121VU HYDRAULIC/HYD/QTY/IND 1831GQ P35 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34 123VU Y HYD/ELEC/PUMP 3802GX AB06
R 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03
4. Procedure
_________
(Ref. Fig. 401/TASK 29-34-11-991-001)
Subtask 29-34-11-420-050
A. Installation of the Reservoir Pressure Switch
(1)
Clean the component interface and/or the adjacent area.
(2)
Do an inspection of the component interface and/or the adjacent area.
(3)
Remove the blanking plugs from the pressure switch and the port on the top of the reservoir.
(4)
Apply hydraulic fluid HYDRAULIC FLUIDS (Material No. 02-003) to the new O-ring (3).
(5)
Install the O-ring (3) on the pressure switch (2).
(6)
Install the pressure switch (2) on the reservoir and TORQUE the pressure switch (2) to between 1.21 and 1.32 m.daN (107.07 and 116.81 lbf.in)
(7)
Safety the pressure switch (2) with lockwire 0.8 mm (0.032 in.).
(8)
Make sure that the bonding jumper (5) and the area of the pressure switch (2) which it touches are clean.
(9)
Apply COMMON GREASE (Material No. 04-012) to the parts of the bonding jumper (5) and the pressure switch (2) which touch.
(10)
Connect the bonding jumper (5) to the pressure switch (2).
(11)
Install the bolt (7), the washer (6) and the nut (4). Tighten the nut (4).
(12)
Remove the blanking caps from the electrical connector (1) and the pressure switch (2).
(13)
Make sure that the electrical connectors are clean and in the correct condition.
(14)
Connect the electrical connector (1) and the pressure switch (2).
(15)
Apply STRUCTURE PAINTS (Material No. 16-003) to the connection of the bonding jumper (5) and the pressure switch (2).
Subtask 29-34-11-790-050
B. Leak Test of the Hydraulic Connections
(1)
Pressurize the reservoir of the Green hydraulic system (Ref. TASK 29-14-00-614-002).
(2)
Apply SPECIAL MATERIALS (Material No. 05-004) to the connection of the pressure switch (2) and the reservoir and make sure that there are no leaks.
Subtask 29-34-11-865-052
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1702GK, 1831GQ, 1832GQ, 3801GX, 3802GX, 3803GX Subtask 29-34-11-710-050
D. Do an operational test of the low air pressure warning (Ref. TASK 29-34-00-710-001).
5. Close-up
________ Subtask 29-34-11-860-051
A. Put the aircraft back to the serviceable condition.
(1)
Connect the isolation coupling of the power transfer unit (PTU) (Ref. TASK 29-23-00-860-002).
(2)
Remove the warning notices from the cockpit and the ground service panel of the Green hydraulic system.
(3)
Remove the access platform. Subtask 29-34-11-865-053
B.
Make sure that this(these) circuit breaker(s) is(are) closed:
1702GK, 1831GQ, 1832GQ, 3801GX, 3802GX, 3803GX
Subtask 29-34-11-410-050
C. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the main doors of the main landing gear (Ref. TASK 32-12-00-410-001).
TASK 29-34-11-000-002 Removal of the Reservoir Pressure Switch of the Blue Hydraulic System WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______ GEAR.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking plugs
No specific circuit breaker(s) safety clip(s)
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