Installation of the Lock Proximity Switch

TASK 52-22-71-400-804-A
Installation of the Lock Proximity Switch

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

FIN: 31WN1 ** ON A/C NOT FOR ALL
FIN: 31WN2 ** ON A/C NOT FOR ALL
FIN: 31WN3 ** ON A/C NOT FOR ALL
FIN: 31WN4 ** ON A/C NOT FOR ALL
FIN: 32WN1 ** ON A/C NOT FOR ALL
FIN: 32WN2 ** ON A/C NOT FOR ALL
FIN: 32WN3 ** ON A/C NOT FOR ALL
FIN: 32WN4 ** ON A/C NOT FOR ALL

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

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 20 and 16 m.N (14.75 and 11.80 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.14QFC1)	Wire-Locking Dia: 0.8 mm CRES -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
833, 834, 843, 844

D. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
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 25-23-47-000-803-A	Removal of the Door Lining from the Overwing Emergency Exit
TASK 25-23-47-400-803-A	Installation of the Door Lining on the Overwing Emergency Exit
TASK 25-80-00-000-001-A	Removal of the Insulation Blankets
TASK 25-80-00-400-001-A	Installation of the Insulation Blankets
TASK 52-22-00-410-802-A	Closing of the Overwing Emergency-Exit Door from the Passenger Compartment
TASK 52-71-00-820-805-A	Adjustment of the Proximity Switches of the Overwing Emergency-Exit Door
Lock Proximity Switch

3. Job Set-up
Subtask 52-22-71-860-053-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that applicable overwing emergency-exit door 833 ( 843) or 834 ( 844) is closed, latched and locked (Ref. AMM TASK 52-22-00-410-802).
(3) Make sure that the door lining of the overwing emergency-exit door is removed (Ref. AMM TASK 25-23-47-000-803).
(4) Make sure that the applicable insulation is removed (Ref. AMM TASK 25-80-00-000-001).

Subtask 52-22-71-865-060-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	EIS/SLIDES/ARM AND WARN/FLT	15WN	P11
121VU	EIS/SLIDES/ARM AND WARN/GND	13WN	P10
121VU	EIS/SDAC1 AND 2/DOOR/DET/PAX	48WV	P05
122VU	FLIGHT LOCK OWD	40WN	U16

Subtask 52-22-71-910-051-A ** ON A/C NOT FOR ALL

C. Preparation for Installation
(1) Do an inspection of 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.

4. Procedure
Subtask 52-22-71-420-053-A ** ON A/C NOT FOR ALL

A. Installation of the Lock Proximity Switch

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.

(1) Put the switch (4) in position on the bracket (3).
(2) Install the locknut (1) with the new lockwasher (2).
(3) Make sure that the lockwasher (2) is correctly engaged in the related hole of the bracket (3).
(4) TORQUE the locknut (1) to between 20 and 16 m.N (14.75 and 11.80 lbf.ft )

.
(5) Safety the locknut (1) with 14QFC1Wire-Locking Dia: 0.8 mm CRES -.
(6) Remove the CAP-BLANKING from each electrical connector and receptacle.
(7) Make sure that all the electrical connections are clean and in the correct condition.
(8) Connect the electrical connector (5) to the receptacle of the switch (4).

Subtask 52-22-71-820-053-A ** ON A/C NOT FOR ALL

B. Adjustment of the Proximity Switch
(1) Do an adjustment of the applicable proximity switch (Ref. AMM TASK 52-71-00-820-805).

Subtask 52-22-71-865-061-A ** ON A/C NOT FOR ALL

C. 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
121VU	EIS/SLIDES/ARM AND WARN/FLT	15WN	P11
121VU	EIS/SLIDES/ARM AND WARN/GND	13WN	P10
121VU	EIS/SDAC1 AND 2/DOOR/DET/PAX	48WV	P05
122VU	FLIGHT LOCK OWD	40WN	U16

5. Close-up
Subtask 52-22-71-410-053-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 removed insulation (Ref. AMM TASK 25-80-00-400-001).
(3) Install the lining of overwing emergency-exit door 833 ( 843) or 834 ( 844) (Ref. AMM TASK 25-23-47-400-803).

Subtask 52-22-71-860-058-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.02 06:27:47 UTC