Installation of the Outflow Valve - Auto Motor 10HL-3 (10HL-4)

TASK 21-31-51-400-003-A
Installation of the Outflow Valve - Auto Motor 10HL-3 (10HL-4)

WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.

NOTE: The procedure is the same for the auto motor 1 and 2.

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 2M (6 FT)
No specific	AR	TIE WRAP
No specific	Torque wrench: range to between 0.06 and 0.05 m.daN (5.31 and 4.42 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03HGH4)	Synthetic Ester base Grease-- Lithium Thickened Low Temp. -
(Material No.03JEA1)	Silicone base Grease-Pressure System - -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
162CW, 826

D. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 21-31-00-710-002-A	Operational Test of the Pressure Control and Monitoring
TASK 21-31-00-710-003-A	Operational Test of Manual Mode Selection and Manual Mode Pressure Control and Functional Test of Manual Mode Cabin Altitude/Outflow Valve Position Indication
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 25-55-12-000-003-A	Removal of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
TASK 25-55-12-400-003-A	Installation of the Sidewall Panels in the Aft Cargo Compartment - FR59/FR65
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
Auto Motor 10HL-3 (10HL-4) - Component Location ** ON A/C NOT FOR ALL
Auto Motor 10HL-3 (10HL-4) - Component Location ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 21-31-51-860-057-A ** ON A/C NOT FOR ALL

WARNING: DO NOT OPEN OR GO NEAR PRESSURE-SEALED DOORS WHEN THE AIRCRAFT IS PRESSURIZED. A PRESSURE-SEALED DOOR THAT OPENS WHEN THE AIRCRAFT IS PRESSURIZED:

WILL CAUSE EXPLOSIVE DECOMPRESSION.
CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAUSE DAMAGE TO THE AIRCRAFT OR EQUIPMENT.

WARNING: OPEN THE ACCESS DOOR AND MAKE SURE IT STAYS OPEN. ATTACH A WARNING NOTICE TO THE ACCESS DOOR TO TELL PERSONS NOT TO CLOSE IT. THIS IS TO PREVENT ACCIDENTAL PRESSURIZATION OF THE AIRCRAFT BY THE AIR CONDITIONING SYSTEM IF ALL THE OTHER CABIN OPENINGS ARE CLOSED. PRESSURIZATION OF THE AIRCRAFT CAN BE DANGEROUS. IT CAN CAUSE A DOOR TO OPEN WITH EXPLOSIVE FORCE WHICH CAN CAUSE INJURY AND/OR DAMAGE.

A. Aircraft Maintenance Configuration

Auto Motor 10HL-3 (10HL-4) - Component Location ** ON A/C NOT FOR ALL

(1) Make sure that:

the AFT cargo-compartment door 826 is open (Ref. AMM TASK 52-30-00-860-001),
the ACCESS PLATFORM 2M (6 FT) is in position at the AFT cargo-compartment door 826 and,
the access panel 162CW is removed (Ref. AMM TASK 25-55-12-000-003).

Subtask 21-31-51-860-057-B ** ON A/C NOT FOR ALL

WARNING: DO NOT OPEN OR GO NEAR PRESSURE-SEALED DOORS WHEN THE AIRCRAFT IS PRESSURIZED. A PRESSURE-SEALED DOOR THAT OPENS WHEN THE AIRCRAFT IS PRESSURIZED:

WILL CAUSE EXPLOSIVE DECOMPRESSION.
CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAUSE DAMAGE TO THE AIRCRAFT OR EQUIPMENT.

A. Aircraft Maintenance Configuration

Auto Motor 10HL-3 (10HL-4) - Component Location ** ON A/C NOT FOR ALL

(1) Make sure that:

the AFT cargo-compartment door 826 is open (Ref. AMM TASK 52-30-00-860-001),
the ACCESS PLATFORM 2M (6 FT) is in position at the AFT cargo-compartment door 826,
the access panel 162CW is removed (Ref. AMM TASK 25-55-12-000-003) and,
the grill (9) is removed.

Subtask 21-31-51-865-104-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AIR COND/CAB/PRESS/CTL1	1HL	D09
** ON A/C NOT FOR ALL
122VU	AIR COND/AFT CARGO VENT/FAN	30HN	S22
** ON A/C ALL
122VU	AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY	6HU	U19
122VU	AIR COND/CAB PRESS/CTL/MAN	3HL	Y23
122VU	AIR COND/CAB PRESS/CTL/2	2HL	Y22

4. Procedure
Subtask 21-31-51-420-052-A ** ON A/C NOT FOR ALL

A. Installation of the Auto Motor
(1) Clean the component interfaces and the adjacent area.
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Apply a small quantity of Silicone base Grease-Pressure System - - (Material No.03JEA1) to the flange of the auto motor/s.
(4) Apply a small quantity of Synthetic Ester base Grease-- Lithium Thickened Low Temp. - (Material No.03HGH4) to:

The teeth of the shaft of the auto motor/s
The threads of the screws (42).

(5) Put auto motor(s) (43) 10HL-3 and/or (44) 10HL-4 in position on the outflow valve (5) and install the screws (42).
(6) Make sure that:

The metal plug of auto motor 10HL-4 (44) points away from the gear-box mechanism linkage to electronics module 10HL-1.

(7) Make sure that the metal plug of auto motor 10HL-3 (43) points down from automotor 10HL-4 (44).
(8) TORQUE the screws (42) to between 0.06 and 0.05 m.daN (5.31 and 4.42 lbf.in )

.
(9) Remove the blanking caps from the disconnected electrical connectors.
(10) Make sure that all the electrical connections are clean and in the correct condition.
(11) Connect the electrical connectors:

For auto motor (43) 10HL-3 the electrical connector (32)
For auto motor (44) 10HL-4 the electrical connector (35).

Subtask 21-31-51-420-052-B ** ON A/C NOT FOR ALL

The teeth of the shaft of the auto motor/s
The threads of the screws (42).

(5) Put auto motor(s) (43) 10HL-3 and/or (44) 10HL-4 in position on the outflow valve (5) and install the screws (42).
(6) Make sure that:

The metal plug of auto motor 10HL-4 (44) points away from the gear-box mechanism linkage to the electronics module 10HL-1.

(7) Make sure that the metal plug of auto motor 10HL-3 (43) points down from auto motor 10HL-4 (44).
(8) TORQUE the screws (42) to between 0.06 and 0.05 m.daN (5.31 and 4.42 lbf.in )

For auto motor (43) 10HL-3 the electrical connector (32)
For auto motor (44) 10HL-4 the electrical connector (35).

(12) Put the electrical cable(s) (40) and/or (45) in position and install the new TIE WRAP (41) where necessary.
(13) Make sure that the cable (45) is attached with two tie wraps (41) to the manual motor (51).
(14) When the gear-box mechanism linkage moves, it must not touch the cable(s) (40) (45) or the metal plugs of the auto motors.
(15) Put the bonding strap (4) in position and temporarily install the washer (28) and the bolt (27).
(16) Put the grill (9) in position in the retaining clips (10) and install the quick release fasteners (12).
(17) Remove the bolt (27) and the washer (28).
(18) Put the bonding straps (4) and (11) in position and install the washer (28) and the bolt (27) (Ref. AMM TASK 20-28-00-912-802).
(19) Make sure that the work area is clean and clear of tools and other items.

Subtask 21-31-51-865-105-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AIR COND/CAB/PRESS/CTL1	1HL	D09
** ON A/C NOT FOR ALL
122VU	AIR COND/AFT CARGO VENT/FAN	30HN	S22
** ON A/C ALL
122VU	AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY	6HU	U19
122VU	AIR COND/CAB PRESS/CTL/MAN	3HL	Y23
122VU	AIR COND/CAB PRESS/CTL/2	2HL	Y22

Subtask 21-31-51-710-052-A

C. Pressure Control and Monitoring System Tests

NOTE: The Operational Test of the Pressure Control and Monitoring System must be performed on both system channels. Ensure that TEST OK or a failure message is displayed. If the test is interrupted it must be restarted until TEST OK or a failure message is displayed.

(1) Do the operational test of the pressure control and monitoring system (Ref. AMM TASK 21-31-00-710-002).
(2) Do the operational test of the manual pressure control and monitoring system (Ref. AMM TASK 21-31-00-710-003).

5. Close-up
Subtask 21-31-51-410-064-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 access panel 162CW (Ref. AMM TASK 25-55-12-400-003).
(3) Remove the access platform(s).
(4) Remove the warning notice and close the AFT cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-002).

Subtask 21-31-51-410-064-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Installation of the Grill
(a) Temporarily install the bonding strap (4), the washer (28) and the bolt (27).
(b) Put the grill (9) in position in the retaining clips (10) and install the quick release fateners (12).
(c) Remove the bolt (27) and the washer (28).
(d) Put the bonding straps (4) and (11) in position and install the washer (28) and the bolt (27) (Ref. AMM TASK 20-28-00-912-802).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install the access panel 162CW (Ref. AMM TASK 25-55-12-400-003).
(4) Remove the access platform(s).
(5) Remove the warning notice and close the AFT cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-002).

Subtask 21-31-51-862-054-A

B. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:11:16 UTC