(2) Remove the warning notice(s).
F 『 EEFF : ALL E Page 60471-73-49
E E Feb 01/98 E E ECES E
F 『
E C F M E
E E
E 56-5B E
E E
TUBES - OIL HYDRAULIC AND WATER DRAIN - CLEANING/PAINTING
_________________________________________________________ TASK 71-73-49-100-001 Cleaning of the Oil, Hydraulic, and Water Drain Tubes/Hose
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice
No specific access platform 1 m (3 ft. 3 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors 71-73-49-000-006 Removal of the Oil Tank Drain Tube and Hose 71-73-49-400-006 Installation of the Oil Tank Drain Tube and Hose
3. Job Set-up
__________ Subtask 71-73-49-941-050
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.
F 『 EEFF : ALL E Page 70171-73-49
E E Feb 01/98 E E ECES E
F 『
E C F M E
E E
E 56-5B E
E E
(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).
Subtask 71-73-49-010-050
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 an access platform in position. Subtask 71-73-49-020-050
C. Remove the oil, hydraulic, and water drain tubes/hose (Ref. TASK 71-73-49-000-006).
4. Procedure
_________ Subtask 71-73-49-160-050
A. Clean the tubes/hose as follows:
(1) If the tube/hose is blocked, use controlled air supply 30 +/- 5 psi
(2.07 +/- 0.34 bar) to clear the blockage.
(2) If the blockage can not be cleared by the use of controlled air, use a clean piece of cloth attached to a length of wire to clear the blockage.
(3) Remove loose dirt from the exterior of the tube/hose with a clean moist cloth.
(4) Dry the surface of the tube/hose with a clean cloth.
(5) For hard to remove dirt or stain use a bristle brush.
F 『 EEFF : ALL E Page 70271-73-49
E E Feb 01/98 E E ECES E 5. Close-up
F 『
E C F M E
E E
E 56-5B E
E E
________ Subtask 71-73-49-420-050
A. Install the oil, hydraulic, and water drain tubes/hose (Ref. TASK 71-73-49-400-006).
Subtask 71-73-49-410-050
B. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the fan cowl doors (Ref. TASK 71-13-00-410-040):
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(3) Remove the access platform(s).
(4) Remove the warning notice(s).
F 『 EEFF : ALL E Page 70371-73-49
E E Feb 01/98 E E ECES E
