Removal of the Engine Fire-Extinguisher Tube-Assembly

TASK 26-21-49-000-003-A
Removal of the Engine Fire-Extinguisher Tube-Assembly

ZONE: 430
ZONE: 440

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 1M(3 FT)
No specific	AR	COVER - PROTECTION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
430	ENG 1 AIR INTAKE, FAN AND ACCESS GEARBOX
440	ENG 2 AIR INTAKE, FAN AND ACCESS GEARBOX
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
Fire Extinguisher Tube Assembly

3. Job Set-up
Subtask 26-21-49-941-056-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the panel 115VU:

Make sure that the ENG/MODE/CRANK/NORM/IGN/START selector switch is in the NORM position.
Put a WARNING NOTICE(S) to tell persons not to start the engine 1(2).

(2) Make sure that the engine shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the panel 50VU:

Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off
Put a WARNING NOTICE(S).

Subtask 26-21-49-010-058-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.

Subtask 26-21-49-865-056-A ** ON A/C NOT FOR ALL

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
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

4. Procedure
Subtask 26-21-49-010-059-A ** ON A/C NOT FOR ALL

A. Removal of the Fire Extinguisher Tube Assembly
(1) Disconnect the hose (5) from the pylon tube (10) at the top of the engine.
(2) Remove the screws (20), nuts (25), washers (30) and clamps (35) that attach the tube (15) to the brackets on the nose cowl. (4 locations, See Detail A).
(3) Remove the screws (20) and clamps (35) that attach the tube (15) to the brackets on the nose cowl. (2 locations, See Detail B).
(4) Remove the screws (20), nuts (25), washers (30) and clamps (35) that attach the tube (15) to the engine brackets. (2 locations, See Detail C).
(5) Remove the screw (20), nut (25), washer (30) and clamp (35) that attach the tube (15) to the stiffener at the bottom of the nose cowl. (See Detail D).
(6) Remove the fire extinguisher tube (15) from the engine.
(7) Put COVER - PROTECTION on the hose (5), the pylon tube (10) and the fire extinguisher tube (15).

[Rev.10 from 2021] 2026.04.01 06:43:35 UTC