(2) Remove the access platform(s).
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TASK 73-11-40-790-002
Leak Check of the Fuel Nozzles
1. Reason for the Job
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To check the fuel supply manifold and fuel nozzle coupling nuts, shrouds and drain tubes for leaks after the fuel nozzles or the other fuel system components have been installed or when leaks have been detected.
2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice No specific access platform 1.5 m (4 ft. 11 in.) No specific Torque Wrench : range 36.00 to 220.00 lbf.in
(0.40 to 2.60 m.daN) No specific Torque Wrench : range 180.00 to 1800.00 lbf.in
(2.00 to 20.00 m.daN) 856A1115 1 CART, NITROGEN - FUEL MANIFOLD PRESSURE CHECK
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2170 * leak-tek 160X (Ref. 70-30-00)
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C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
71-00-00-710-006 Minimum Idle Check
71-13-00-010-040 Opening of the Fan Cowl Doors
71-13-00-410-040 Closing of the Fan Cowl Doors
73-00-00-680-001 Draining of the Engine Fuel Circuit
73-11-30-200-002 Inspection/Check of the Fuel Manifold Assembly
73-11-40-000-002 Removal of the Fuel Nozzle
73-11-40-400-002 Installation of the Fuel Nozzle
78-30-00-081-041 Make the Thrust Reverser Serviceable after
Maintenance
78-30-00-481-041 Make the Thrust Reverser Unserviceable for
Maintenance
78-36-00-010-040 Opening of the Thrust Reverser Doors
78-36-00-410-040 Closing of the Thrust Reverser Doors
73-11-40-991-300 Fig. 501
R 73-11-40-991-308 Fig. 502 R 73-11-40-991-309 Fig. 503
3. Job Set-up
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Subtask 73-11-40-941-052
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a warning notice 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) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a warning notice to tell persons not to energize the FADEC 1(2).
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Subtask 73-11-40-010-055
B. Get Access
(1) Open the fan cowl doors: (Ref. TASK 71-13-00-010-040) FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
(2) Put the access platform in position.
Subtask 73-11-40-040-053
C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
Subtask 73-11-40-010-056
D. Open the thrust reverser cowl doors: (Ref. TASK 78-36-00-010-040) FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
4. Procedure
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R (Ref. Fig. 501/TASK 73-11-40-991-300, 502/TASK 73-11-40-991-308, 503/TASK 73-11-40-991-309)
Subtask 73-11-40-680-051
R A. Drain the engine fuel circuit (Ref. TASK 73-00-00-680-001).
Subtask 73-11-40-790-051
B. Do a leak check at the fuel supply coupling nut(s) of the fuel nozzles as follows :
CAUTION : DO NOT SUPPLY AIR PRESSURE INTO THE FUEL FLOW TRANSMITTER LINE.
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(1) Make sure that the drain shroud(s) for the nozzle(s) being checked is(are) in a position that allows you to see the fuel supply coupling nut(s) of the fuel nozzle(s). If necessary, loosen the shroud connector(s) and move the drain shroud(s) away from the fuel nozzle(s).
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