(4) Remove the access platform(s). Subtask 26-21-00-862-050
D. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002)
1EFF : ALL 1 26-21-00Page 512 1 1 Feb 01/05R 1 1 1CES 1
TASK 26-21-00-720-003
R Check Distribution Piping for Leakage and Obstruction
1. Reason for the Job
__________________
Refer to the MPD TASK: 262100-04
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
No specific compressed air source (up to 2.07 bars (30 psi))
No specific warning notice
No specific access platform 1.60 m (5 ft. 3 in.)
98D26203000004 1 TOOLING TEST - ENGINE FIRE EXTINGUISHING SYSTEM
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
26-21-41-400-001 Installation of the Engine Fire-Extinguisher Bottle
(6WE1,8WE1,6WE2,8WE2)
71-13-00-010-040 Opening of the Fan Cowl Doors
71-13-00-410-040 Closing of the Fan Cowl Doors
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
26-21-00-991-003 Fig. 503
3. Job Set-up
__________
Subtask 26-21-00-865-067
A. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/B 2WE1 Q44 121VU ENGINE/ENG1 AND 2 FIRE EXTIG/BTL1/SQUIB/A 1WE1 Q43 121VU ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/B 2WE2 Q42 121VU ENGINE/ENG1 AND 2 FIRE EXTIG/BTL2/SQUIB/A 1WE2 Q41
Subtask 26-21-00-860-050
B. Safety Precautions R (1) On the center pedestal, on the ENG panel 115VU:
-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).
Subtask 26-21-00-010-060
C. Get Access
(1) Open the fan cowls:
(Ref. TASK 71-13-00-010-040)
(a)
For engine 1,
437AL, 438AR
(b)
For engine 2,
447AL, 448AR
Subtask 26-21-00-040-051
D. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041). Subtask 26-21-00-010-061
E. Get Access
(1)
Open the left thrust reverser halves:
(Ref. TASK 78-36-00-010-040)
(a)
For engine 1,
452AR
(b)
For engine 2,
462AR
(2)
Put the access platform in position.
(3)
On the left engine pylon, remove the access doors:
415BL, 415BR
(4)
On the right engine pylon, remove the access doors:
425BL, 425BR
4. Procedure
_________
(Ref. Fig. 503/TASK 26-21-00-991-003) Subtask 26-21-00-720-055
A. Functional Test to Do a Check of the Distribution Piping for Leakage and Obstruction
(1) Obstruction Test
(a) On the related pylon: WARNING : BE VERY CAREFUL WHEN YOU MOVE A FILLED FIRE
_______ EXTINGUISHER BOTTLE. A HEAVY SHOCK COULD CAUSE PERCUSSION.
NOTE : If the bottles are not installed, go to the step (b).
____
-remove the 4 screws and washers which attach the aft fire extinguisher bottle (8),
1EFF : ALL 1 26-21-00Page 515 1 1 Nov 01/98R 1 1 1CES 1
Distribution Line
Figure 503/TASK 26-21-00-991-003- 12 (SHEET 1)
1EFF : ALL 1 26-21-00 Page 516
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