Detailed Visual Inspection of the Rollers

TASK 52-11-31-220-001-A
Detailed Visual Inspection of the Rollers

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 4M (13 FT)-ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
831, 841

C. Referenced Information

REFERENCE	DESIGNATION
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 52-10-00-010-001-A	Opening of the Passenger/Crew Door
TASK 52-10-00-410-001-A	Closing of the Passenger/Crew Door
TASK 52-10-00-860-001-A	Special Precautions before Work on the Passenger/Crew Door
TASK 52-10-00-860-002-A	Special Precautions after Work on the Passenger/Crew Door
TASK 52-10-00-915-001-A	Replacement of the Bonded Bushes (with Seal Bead)
TASK 52-11-31-000-002-A	Removal of the Stop Fittings, Buffer, Guide Fittings, Rollers, Door Stop Fittings, Roller Fittings and Guide Arm Fittings
Guide Rollers
Roller

3. Job Set-up
Subtask 52-11-31-861-050-A

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001)

Subtask 52-11-31-010-057-A

B. Get Access

WARNING: BEFORE YOU START WORK ON THE DOOR, MAKE SURE THAT:

THE EMERGENCY CONTROL HANDLE IS IN THE DISARMED POSITION WITH THE SAFETY PIN INSTALLED.
THE PERCUSSION LEVER OF THE DOOR-DAMPER AND EMERGENCY-OPERATION CYLINDER IS IN THE DISARMED POSITION WITH THE SAFETY PIN INSTALLED.

IF YOU DO NOT OBEY THESE INSTRUCTIONS, THE DOOR CAN OPEN WITH FORCE OR THE ESCAPE SLIDE CAN DEPLOY SUDDENLY. THIS CAN CAUSE INJURY AND/OR DAMAGE.

WARNING: DO NOT OPEN THE PASSENGER/CREW DOOR IF THE WIND SPEED IS MORE THAN 65 KNOTS.

WARNING: STOP THE OPENING PROCEDURE IF THE RED WARNING LIGHT FLASHES. IF THE RED WARNING LIGHT FLASHES, REMAINING PRESSURE CAN CAUSE THE DOOR TO OPEN SUDDENLY AND CAN:

KILL OR CAUSE SERIOUS INJURY TO PERSONS
CAUSE DAMAGE TO THE AIRCRAFT.

(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position at the applicable FWD passenger/crew door 831 or 841.
(2) Open the applicable FWD passenger/crew door 831 or 841 (Ref. AMM TASK 52-10-00-010-001).
(3) Obey the special precautions before you start work on the door (Ref. AMM TASK 52-10-00-860-001)

Subtask 52-11-31-865-059-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C 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

Subtask 52-11-31-020-059-A

D. Removal of the Rollers
(1) Remove the rollers, if not removed (Ref. AMM TASK 52-11-31-000-002).

4. Procedure
Subtask 52-11-31-220-051-A

A. Inspection of the Guide Rollers

Guide Rollers

(1) Do a detailed visual inspection of the bush, and the parts of the guide rollers.
(2) Make sure that the dimensions are correct.

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
CC	9.486	9.495			9.460
OD 2	(0.3735)	(0.3738)			(0.3724)
			0.0450	0.0770			0.1540
			(0.0018)	(0.0030)			(0.0061)
CC	9.540	9.563				9.614
ID 1	(0.3756)	(0.3765)				(0.3785)

(3) If the wear of the bush is not in the tolerances.
(a) Replace the bush (Ref. AMM TASK 52-10-00-915-001).
(b) or replace the part on which it is installed.

Subtask 52-11-31-220-052-A

B. Inspection of the Roller

Roller

(1) Do a detailed visual inspection of the parts of the roller.
(2) Make sure that the dimensions are correct.

FIG. DETAIL AND ITEM N°	ORIGINAL MANUFACTURING LIMITS	IN-SERVICE WEAR LIMITS
CC	8.483	8.495			8.473
OD 11	(0.3340)	(0.3344)			(0.3336)
			0.0100	0.0310			0.0610
			(0.0004)	(0.0012)			(0.0024)
CC	8.505	8.514				8.534
ID 10	(0.3348)	(0.3352)				(0.3360)

5. Close-up
Subtask 52-11-31-420-059-A

A. Installation of the Rollers
(1) Install the rollers (Ref. AMM TASK 52-11-31-000-002).

Subtask 52-11-31-865-060-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
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

Subtask 52-11-31-410-058-A

C. Close Access
(1) Obey the special precautions after the work on the door (Ref. AMM TASK 52-10-00-860-002).
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(3) Make sure that the work area is clean and clear of tools and other items.
(4) Close the FWD passenger/crew door 831 or 841 (Ref. AMM TASK 52-10-00-410-001).
(5) Remove the access platform(s).

Subtask 52-11-31-862-050-A

D. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001)

[Rev.10 from 2021] 2026.04.01 01:37:00 UTC