Adjustment of the Balance Mechanism

TASK 52-22-00-820-005-A
Adjustment of the Balance Mechanism

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

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	DYNAMOMETER 20 DAN (45 LBF) - PULL
98D52207557000	1	BALLAST WEIGHT - EMERGENCY EXIT

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

C. Referenced Information

REFERENCE	DESIGNATION
TASK 25-23-47-400-009-A	Installation of the Door Frame Linings of the Right Forward Emergency Exit Door in Zone 232
TASK 25-23-47-400-010-A	Installation of the Door Frame Linings of the Left/Right Aft Emergency Exit Doors in Zones 251/252
TASK 25-23-47-400-012-A	Installation of the Door Linings of the LH FWD Emergency Exit Door, zone 231
TASK 52-22-00-010-001-A	Opening of the Emergency Exit Doors from the Passenger Compartment
TASK 52-22-00-410-001-A	Closing of the Emergency Exit Doors from the Passenger Compartment
TASK 52-22-00-860-004-A	Special Precaution after Maintenance on the Door Damper and Emergency Operation Cylinder
Adjustment of the Torsion Spring ** ON A/C NOT FOR ALL
Adjustment of the Torsion Spring ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 52-22-00-860-081-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the applicable door is partly opened (Ref. AMM TASK 52-22-00-010-001).
(2) Make sure that the special precaution on the door damper and emergency operation cylinder is done (Ref. AMM TASK 52-22-00-860-004).
(3) Make sure that the door frame linings are installed (Ref. AMM TASK 25-23-47-400-009), (Ref. AMM TASK 25-23-47-400-010) and (Ref. AMM TASK 25-23-47-400-012).
(4) If not, put the 98D52207557000 BALLAST WEIGHT - EMERGENCY EXIT in the applicable door to replace the weight of the door lining.

Subtask 52-22-00-860-081-B ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the applicable door is partly opened (Ref. AMM TASK 52-22-00-010-001).
(2) Make sure that the special precaution on the door damper and emergency operation cylinder is done (Ref. AMM TASK 52-22-00-860-004).
(3) Make sure that the door frame lining is installed (Ref. AMM TASK 25-23-47-400-010).
(4) If not, put the 98D52207557000 BALLAST WEIGHT - EMERGENCY EXIT in the applicable door to replace the weight of the door lining.

Subtask 52-22-00-865-058-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

4. Procedure
Subtask 52-22-00-820-054-A ** ON A/C NOT FOR ALL

A. Adjustment of Tension Spring

Adjustment of the Torsion Spring ** ON A/C NOT FOR ALL

(1) Manually move the roller lever (223) outboard to turn the detent shaft (225) and release the safety catch (224) from the blocking lever (226).
(2) Make sure that the door stays in the lifted position.
(3) If the door moves down, increase the tension of the torsion spring (221) as follows:

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.

(a) If necessary, cut and remove the lockwire from the adjustment screw (222).
(b) Turn the adjustment screw (222) clockwise until the balance mechanism holds the opened door in the lifted position.
(4) Put a DYNAMOMETER 20 DAN (45 LBF) - PULL in position on the inboard handle.

NOTE: Make sure that the dynamometer is always at a right-angle with the inboard handle during the full measurement sequence.

(5) Slowly operate the inboard handle down and measure the force necessary to close the door. The force must be less than 15.0 daN (33.721 lbf).
(6) Slowly operate the inboard handle up and measure the force necessary to open the door. The force must be less than 15.0 daN (33.721 lbf). The difference between the "open" and "close" force must be less than 5.0 daN (11.240 lbf).
(7) If the force is more than permitted, turn the adjustment screw (222) clockwise to increase the tension of the torsion spring.
(8) Do again the check of the operational force.
(9) If the adjustment of the balance mechanism is correct, safety the adjustment screw (222) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

5. Close-up
Subtask 52-22-00-865-059-A ** ON A/C NOT FOR ALL

A. Make sure that this(these) circuit breaker(s) is(are) closed:

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

Subtask 52-22-00-410-060-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Make sure that the 98D52207557000 BALLAST WEIGHT - EMERGENCY EXIT is removed and the door frame linings are installed (Ref. AMM TASK 25-23-47-400-009), (Ref. AMM TASK 25-23-47-400-010) and (Ref. AMM TASK 25-23-47-400-012).
(3) Do the special precaution on the door damper and emergency operation cylinder (Ref. AMM TASK 52-22-00-860-004).
(4) Close the door correctly (Ref. AMM TASK 52-22-00-410-001).

Subtask 52-22-00-410-060-B ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Make sure that the 98D52207557000 BALLAST WEIGHT - EMERGENCY EXIT is removed and the door frame lining is installed (Ref. AMM TASK 25-23-47-400-010).
(3) Do the special precaution on the door damper and emergency operation cylinder (Ref. AMM TASK 52-22-00-860-004).
(4) Close the door correctly (Ref. AMM TASK 52-22-00-410-001).

[Rev.10 from 2021] 2026.04.02 06:27:38 UTC