Adjustment of the Percussion Bellcrank Finger of the Door Damper and Emergency Operation Cylinder of the FWD Passenger/Crew Door

TASK 52-11-14-820-002-A
Adjustment of the Percussion Bellcrank Finger of the Door Damper and Emergency Operation Cylinder of the FWD Passenger/Crew Door

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 5M (16 FT)- ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
98D52103500000	1	SAFETY PIN - SLIDE ARMING

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
831, 831FZ, 831GZ, 841, 841FZ, 841GZ

C. Referenced Information

REFERENCE	DESIGNATION
TASK 25-23-46-000-001-A	Removal of the Door Linings from the Forward Passenger/Crew Doors
TASK 25-23-46-400-001-A	Installation of the Door Linings on the Forward Passenger/Crew Doors
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
Adjustment of the Percussion Bellcrank Finger

3. Job Set-up
Subtask 52-11-14-010-060-A

A. Get Access

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

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: 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 5M (16 FT)- ADJUSTABLE in position at the applicable passenger/crew door 831 or 841.
(2) Open the applicable passenger crew door: 831, ( 841). (Ref. AMM TASK 52-10-00-010-001)
(3) Obey the special Precautions before you start work on the passenger crew/door (Ref. AMM TASK 52-10-00-860-001).

Subtask 52-11-14-865-056-A

B. 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 52-11-14-010-071-A

C. Removal of the Door Support-Arm Lining
(1) Remove the door support-arm lining (Ref. AMM TASK 25-23-46-000-001).
(a) For the left passenger crew/door 831FZ and 831GZ.
(b) For the right passenger crew/door 841FZ and 841GZ.

Subtask 52-11-14-860-052-A

D. Aircraft Maintenance Configuration

CAUTION: MAKE SURE THAT YOU HOLD THE DOOR WHEN IT IS IN THE FULLY UP POSITION. THIS WILL PREVENT DEPLOYMENT OF THE SLIDE (OR OF THE SLIDE/RAFT) WHEN YOU ADJUST THE STRIKER MECHANISM OF THE DOOR- DAMPER AND EMERGENCY-OPERATION CYLINDER.

(1) Make sure that the door is in the closed position.
(2) Remove the 98D52103500000 SAFETY PIN - SLIDE ARMING and put the emergency control handle in the armed position.
(3) Put the door in the full up position :

Carefully move the door adjacent to the frame. The guide rollers must go into their guide fittings. The door must be on its seal at the front and at the rear.

4. Procedure
Subtask 52-11-14-820-052-A

A. Adjustment of the Percussion Bellcrank Finger

Adjustment of the Percussion Bellcrank Finger

(1) Adjustment of the finger of the percussion bellcrank on the Z axis:
(a) Loosen the nut (1), remove the finger (3) and the new adjustable washer (2).
(b) Put the finger (3) and a new adjustable washer (2) to get the clearance J1 of 5 -1 mm or +1 mm (0.1969 -0.0394 in. or +0.0394 in.).
(c) Install the nut (1) and tighten it.
(2) Adjustment of the finger of the percussion bellcrank in the X axis:
(a) Loosen the nut (5).
(b) Adjust the length of the rod (4) to get the clearance J2 7.5 -1 mm or +1 mm (0.2953 -0.0394 in. or +0.0394 in.).
(c) Tighten the nut (5).

5. Close-up
Subtask 52-11-14-860-055-A

A. Aircraft Maintenance Configuration
(1) Close the door.
(2) Put the emergency control handle in the disarmed position. Install the 98D52103500000 SAFETY PIN - SLIDE ARMING.

Subtask 52-11-14-410-075-A

B. Installation of the Door Support-Arm Lining
(1) Install the door support-arm lining (Ref. AMM TASK 25-23-46-400-001).
(a) For the left passenger crew/door 831FZ and 831GZ.
(b) For the right passenger crew/door 841FZ and 841GZ.

Subtask 52-11-14-865-057-A

C. 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 52-11-14-410-064-A

D. Close Access
(1) Obey the special precautions after you work on the passenger/crew door (Ref. AMM TASK 52-10-00-860-002).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Close the applicable passenger/crew door 831 ( 841) (Ref. AMM TASK 52-10-00-410-001).
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 01:36:28 UTC