Installation of the Proximity Switches

TASK 52-71-12-400-001-A
Installation of the Proximity Switches

ZONE: 825
ZONE: 826
FIN: 28WV
FIN: 34WV

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 4M (13 FT)-ADJUSTABLE
No specific	1	GAGE - FEELER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
825	FORWARD CARGO COMPARTMENT DOOR
826	AFT CARGO COMPARTMENT DOOR
825AR, 826AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
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 52-31-14-000-801-A	Removal of the FWD Cargo-Compartment Door Access-Panel
TASK 52-31-14-400-801-A	Installation of the FWD Cargo-Compartment Door Access-Panel
TASK 52-32-14-000-801-A	Removal of the Aft Cargo-Compartment-Door Access-Panels
TASK 52-32-14-400-801-A	Installation of the Aft Cargo-Compartment-Door Access-Panels
TASK 52-71-00-820-004-A	Adjustment of the Proximity Switches of the Locking Handle of the Cargo Compartment Doors
Proximity Switches 28WV and 34WV ** ON A/C NOT FOR ALL
Proximity Switches 28WV and 34WV ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 52-71-12-860-052-B ** ON A/C NOT FOR ALL

A. Get Access
(1) Make sure that the applicable cargo door is closed (Ref. AMM TASK 52-30-00-860-001).
(2) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is in position at the applicable cargo door.
(3) Make sure that access panel(s) 825AR and/or 826AR are removed
(Ref. AMM TASK 52-31-14-000-801) and (Ref. AMM TASK 52-32-14-000-801).

Subtask 52-71-12-860-052-D ** ON A/C NOT FOR ALL

A. Get Access
(1) Make sure that the applicable cargo door is closed (Ref. AMM TASK 52-30-00-860-001).
(2) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE is in position at the applicable cargo door.
(3) Make sure that the inner access panel (12) is removed from the AFT cargo door.

Proximity Switches 28WV and 34WV ** ON A/C NOT FOR ALL

Subtask 52-71-12-865-051-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	L/G/LGCIU/SYS1/NORM	1GA	C09
122VU	DOORS/CARGO	1MJ	T12

4. Procedure
Subtask 52-71-12-210-050-A

A. Visual inspection
(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that all the electrical connections are clean and in the correct condition.

Subtask 52-71-12-420-050-B

B. Installation of the Proximity Switch

Proximity Switches 28WV and 34WV ** ON A/C NOT FOR ALL

(1) Install the proximity sensor (4) as follows:
(a) Put the proximity sensor (4) in position on the bracket (1) and attach it with the bolts (2), the washers (11) and the nuts (10).
(b) Remove the blanking caps from the electrical connector (3) and the receptacle of the proximity sensor (4).
(c) Connect the electrical connector (3) on the proximity switch (4).
(2) Put the target (9) in position on the door handle (6) and attach it with the bolts (5), the washers (7) and the nut (9).

Subtask 52-71-12-820-050-B

C. Adjustment of the Proximity Switch

CAUTION: BEFORE YOU INSTALL/REMOVE THE GSE-TOOL, READ THE INSTRUCTIONS IN THE APPLICABLE GSE INSTRUCTION MANUAL. WHILE YOU OPERATE THIS TOOL, CAREFULLY OBEY THEM. IF YOU DO NOT OBEY THE INSTRUCTIONS, DAMAGE TO EQUIPMENT CAN OCCUR.

(1) Make sure that the cargo door is correctly locked with the door handle (6) in the recess of the door structure.
(2) Measure clearance J2 between the target (9) and the proximity switch (4) with the GAGE - FEELER.

NOTE: Clearance J2 must be between 1.60 mm (0.0630 in.) and 2.0 mm (0.0787 in.).

(3) If clearance J2 is out of tolerance, adjust the proximity switch (4) (Ref. AMM TASK 52-71-00-820-004).

Subtask 52-71-12-865-052-A

D. 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	L/G/LGCIU/SYS1/NORM	1GA	C09
122VU	DOORS/CARGO	1MJ	T12

Subtask 52-71-12-720-050-B

E. Operational Test
(1) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(2) Do this test to make sure that the proximity switch operates correctly.

ACTION	RESULT
1.On the FWD and/or AFT cargo door(s): Push the handle flap in and pull the door handle away from the cargo door.	On the lower display unit of the ECAM system: The symbol of the applicable cargo door is shown in amber The related message CARGO comes on.
Push the door handle down into the recess of the door structure.	The symbol for the applicable cargo door changes to green The message CARGO goes off.

(3) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(4) If necessary, adjust the applicable proximity switch (Ref. AMM TASK 52-71-00-820-004).

5. Close-up
Subtask 52-71-12-410-050-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 access panel 825AR or 826AR on the applicable cargo door
(Ref. AMM TASK 52-31-14-400-801) and (Ref. AMM TASK 52-32-14-400-801).
(3) Make sure that the applicable cargo door is correctly closed (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).

Subtask 52-71-12-410-050-D ** 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 inner access panel (12) with the screws (14) and the washers (13) on the AFT cargo door.

Proximity Switches 28WV and 34WV ** ON A/C NOT FOR ALL

(3) Make sure that the applicable cargo door is correctly closed (Ref. AMM TASK 52-30-00-860-002).
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 12:31:15 UTC