Installation of the Cartridge of the Cargo Fire-Extinguisher Bottle

TASK 26-23-41-400-005-A
Installation of the Cartridge of the Cargo Fire-Extinguisher Bottle

WARNING: DO NOT REMOVE/INSTALL THE DISCHARGE HEAD WITH THE CARTRIDGE INSTALLED.

WARNING: MAKE SURE THAT THE MAXIMUM PERMITTED LIFE (MPL) OF THE CARTRIDGE IS LONGER THAN THE TIME TO THE NEXT SCHEDULED DISCARD OF THE CARTRIDGE.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 130

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

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	ELECTRICALLY GROUNDED WRIST STRAP
No specific	Torque wrench: range to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )
No specific	Torque wrench: range to between 0.35 and 0.3 m.daN (30.97 and 26.55 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
130	FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
825
131CC, 231VF
132MW
132SW

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	O-RING	AIPC 26-23-41-01-030
30	O-RING	AIPC 26-23-41-01-030
FOR [4005WX] (BOTTLE-FIRE EXTING)
30	PACKING	AIPC 26-23-41-01-030

E. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 25-54-12-000-002-A	Removal of the Ceiling Panels in the Forward Cargo Compartment
TASK 25-54-12-000-003-A	Removal of the Sidewall Panels in the Forward Cargo Compartment
TASK 25-54-12-400-002-A	Installation of the Ceiling Panels in the Forward Cargo Compartment
TASK 25-54-12-400-003-A	Installation of the Sidewall Panels in the Forward Cargo Compartment
TASK 26-23-00-710-001-A	Operational Test of the Cargo-Compartment Fire-Extinguishing System
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 53-22-12-000-001-A	Removal of the Cabin Floor Panels
TASK 53-22-12-400-001-A	Installation of the Cabin Floor Panels
Cartridge - Cargo Fire-Extinguisher Bottle ** ON A/C NOT FOR ALL
Cartridge - Cargo Fire-Extinguisher Bottle ** ON A/C NOT FOR ALL
Cartridge - Cargo Fire-Extinguisher Bottle ** ON A/C NOT FOR ALL
Cartridge - Cargo Fire-Extinguisher Bottle ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 26-23-41-860-052-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position at the zone 825.
(2) Make sure that the ground service network is energized (Ref. AMM TASK 24-42-00-861-001).

Subtask 26-23-41-010-060-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the forward cargo compartment door 825 is open (Ref. AMM TASK 52-30-00-860-001).
(2) Make sure that the CARGO COMPT LIGHT switch 6LU is in the ON position.
(3) Make sure that the protection panel 132MW is removed (Ref. AMM TASK 25-54-12-000-003).
(4) Make sure that the shunt plugs are installed on the cartridges.

Subtask 26-23-41-010-060-B ** ON A/C NOT FOR ALL

B. Get Access
(1) If an Additional Center Tank (ACT) is installed:
(a) Make sure that cabin floor panel 231VF is removed (Ref. AMM TASK 53-22-12-000-001).
(b) Make sure that ceiling panel 131CC is removed (Ref. AMM TASK 25-54-12-000-002).
(c) Make sure that sidewall panel 132MW is removed (Ref. AMM TASK 25-54-12-000-003).
(2) If the ACT is not installed:
(a) Make sure that forward cargo-compartment door 825 is open (Ref. AMM TASK 52-30-00-860-001).
(b) Make sure that CARGO COMPT LIGHT switch 6LU is in the ON position.
(c) Make sure that sidewall panel 132MW is removed (Ref. AMM TASK 25-54-12-000-003).
(3) Make sure that the shunt plugs are installed on the cartridges.

Subtask 26-23-41-010-060-C ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the forward cargo compartment door 825 is open (Ref. AMM TASK 52-30-00-860-001).
(2) Make sure that the CARGO COMPT LIGHT switch 6LU is in the ON position.
(3) Make sure that the sidewall panel 132SW is removed (Ref. AMM TASK 25-54-12-000-003).
(4) Make sure that the shunt plugs are installed on the cartridges.

Subtask 26-23-41-865-058-A ** ON A/C NOT FOR ALL

C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL2	8WX	C05
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C04
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL2	8WX	C04
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C03
** ON A/C NOT FOR ALL
122VU	AIR COND/CARGO/FIRE/EXTIG	1WX	T19

4. Procedure
Subtask 26-23-41-420-055-A ** ON A/C NOT FOR ALL

A. Installation of the Cartridges

Cartridge - Cargo Fire-Extinguisher Bottle ** ON A/C NOT FOR ALL

NOTE: The installation procedure is the same for all the cartridges.

(1) Make sure that you are grounded with the ELECTRICALLY GROUNDED WRIST STRAP.

WARNING: DO NOT TOUCH THE FRANGIBLE DISC IN THE FIRE EXTINGUISHER BOTTLE. DAMAGE TO THE FRANGIBLE DISC CAN CAUSE UNWANTED DISCHARGE AND INJURY TO PERSONS.

(2) Remove the PLUG - BLANKING from the discharge head (1).
(3) Install the cartridge (4) as follows:

WARNING: BEFORE YOU TOUCH THE POWER DEVICE CARTRIDGE, MAKE SURE THAT YOU ARE GROUNDED AND THAT YOU INSTALL A SHUNT DEVICE ON IT. USE A CAP OR PLUG AS SHUNT DEVICE (THE CAP OR PLUG WILL SHUNT THE PINS TOGETHER ON THE CARTRIDGE). DO NOT USE A FOIL SHUNT. IF YOU TOUCH A POWER DEVICE CARTRIDGE THAT DOES NOT HAVE A SHUNT DEVICE INSTALLED, AN EXPLOSION CAN OCCUR AND CAUSE INJURIES TO YOU.

(a) Install the ground lug bolt (7) on the cartridge (4).
(b) Install the new AIPC 26-23-41-01-030 O-RING (2).
(c) Loosely install the cartridge (4) in the discharge head (1).
(d) TORQUE the cartridge (4) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )

.
(e) Loosely install the bonding strap (3) and the nut (6) on the ground lug bolt (7) (Ref. AMM TASK 20-28-00-912-802).
(f) TORQUE the nut (6) to between 0.35 and 0.3 m.daN (30.97 and 26.55 lbf.in )

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(g) Safety the cartridge (4) with the 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(4) Connect the electrical connector (5) as follows:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.

(b) Remove the shunt plug from the cartridge (4).

CAUTION: MAKE SURE THAT THE BONDING STRAP(S) IS(ARE) CONNECTED BEFORE YOU CONNECT THE ELECTRICAL CONNECTOR(S).

Subtask 26-23-41-420-055-C ** ON A/C NOT FOR ALL

A. Installation of the Cartridges

Cartridge - Cargo Fire-Extinguisher Bottle ** ON A/C NOT FOR ALL

NOTE: The installation procedure is the same for cartridges 4001WX, 4003WX, 4010WX, 4011WX and 4013WX.

(1) Make sure that you are grounded with the ELECTRICALLY GROUNDED WRIST STRAP.

WARNING: DO NOT TOUCH THE FRANGIBLE DISC IN THE FIRE EXTINGUISHER BOTTLE. DAMAGE TO THE FRANGIBLE DISC CAN CAUSE UNWANTED DISCHARGE AND INJURY TO PERSONS.

(2) Remove the PLUG - BLANKING from the discharge heads (5) and (12).
(3) Install the cartridges (7) and (14) as follows:

(a) FOR [4005WX] (BOTTLE-FIRE EXTING)
1 Install the new AIPC 26-23-41-01-030 PACKING (30).
2 Install the ground lug bolts (6) and (13) on the cartridges (7) and (14).
(b) Loosely install the cartridges (7) and (14) in the discharge heads (5) and (12).
(c) TORQUE the cartridges (7) and (14) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )

(d) Safety the cartridges (7) and (14) with the 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(4) Connect the electrical connectors (8) and (15):
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.

(b) Remove the shunt plug from the cartridges (7) and (14).
(c) Connect the electrical connectors (8) and (15) to the cartridges (7) and (14).

Subtask 26-23-41-420-055-F ** ON A/C NOT FOR ALL

A. Installation of the Cartridges

Cartridge - Cargo Fire-Extinguisher Bottle ** ON A/C NOT FOR ALL

(1) Make sure that you are grounded with the ELECTRICALLY GROUNDED WRIST STRAP.

WARNING: DO NOT TOUCH THE FRANGIBLE DISC IN THE FIRE EXTINGUISHER BOTTLE. DAMAGE TO THE FRANGIBLE DISC CAN CAUSE UNWANTED DISCHARGE AND INJURY TO PERSONS.

(2) Remove the blanking plugs from the discharge heads (5) and (12).
(3) Install the cartridge (14) as follows:

(a) Install the new AIPC 26-23-41-01-030 O-RING (30) and the bonding strap (13) on the cartridge (14).
(b) Loosely install the cartridge (14) in the discharge head (12).
(c) TORQUE the cartridge (14) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )

(d) Safety the cartridge (14) with the 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(4) Install the cartridge (7) as follows:

(a) Install the new AIPC 26-23-41-01-030 O-RING (30) and a bonding strap (6) on the cartridge (7).
(b) Loosely install the cartridge (7) in the discharge head (5).
(c) TORQUE the cartridge (7) to between 100 and 90 lbf.in (1.13 and 1.02 m.daN )

(d) Safety the cartridge (7) with the 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

(5) Remove the shunt plugs from the cartridges (14) and (7).

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

CAUTION: MAKE SURE THAT THE BONDING STRAP(S) IS(ARE) CONNECTED BEFORE YOU CONNECT THE ELECTRICAL CONNECTOR(S).

(6) Connect the electrical connectors as follows:
(a) Remove the blanking cap from the electrical connector (15).
(b) Connect the electrical connector (15) to the cartridge (14).
(c) Remove the blanking cap from the electrical connector (8).
(d) Connect the electrical connector (8) to the cartridge (7).

Subtask 26-23-41-865-072-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL2	8WX	C05
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C04
** ON A/C NOT FOR ALL
49VU	AIR COND/CARGO FIRE/EXTIG/BTL2	8WX	C04
49VU	AIR COND/CARGO/FIRE/EXTIG/BTL1	1WX	C03
** ON A/C NOT FOR ALL
122VU	AIR COND/CARGO/FIRE/EXTIG	1WX	T19

Subtask 26-23-41-710-052-A ** ON A/C NOT FOR ALL

C. Operational Test
(1) Do an operational test of the cargo-compartment fire-extinguishing system (Ref. AMM TASK 26-23-00-710-001).

5. Close-up
Subtask 26-23-41-410-053-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the sidewall panel 132MW (Ref. AMM TASK 25-54-12-400-003).
(3) Set the CARGO COMPT LIGHT switch 6LU to the OFF position.
(4) Close the forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(5) Remove the access platform(s).

Subtask 26-23-41-410-053-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the sidewall panel 132SW (Ref. AMM TASK 25-54-12-400-003).
(3) Set the CARGO COMPT LIGHT switch 6LU to the OFF position.
(4) Close the forward cargo compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(5) Remove the access platform(s).

Subtask 26-23-41-410-053-D ** ON A/C NOT FOR ALL

A. Close Access
(1) If an Additional Center Tank (ACT) is installed:
(a) Make sure that the work area is clean and clear of tools and other items.
(b) Install sidewall panel 132MW (Ref. AMM TASK 25-54-12-400-003).
(c) Install ceiling panel 131CC on the cargo compartment (Ref. AMM TASK 25-54-12-400-002).
(d) Install cabin floor panel 231VF (Ref. AMM TASK 53-22-12-400-001).
(2) If the ACT is not installed:
(a) Make sure that the work area is clean and clear of tools and other items.
(b) Install sidewall panel 132MW (Ref. AMM TASK 25-54-12-400-003).
(c) Set CARGO COMPT LIGHT switch 6LU to OFF.
(d) Close forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(e) Remove the access platform(s).

Subtask 26-23-41-862-052-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.03.31 23:46:25 UTC