Installation of the Torque Shafts

TASK 27-54-45-400-011-A
Installation of the Torque Shafts

WARNING: MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

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

CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:

DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.

FIN: 6224CM
FIN: 6230CM
FIN: 6274CM
FIN: 6280CM

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 5M (16 FT)- ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03FDB1)	Mineral Oil base Grease-Anti-Fretting Paste -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [6224CM] (FLAP XMSN TORQUE SHAFT)
575CB
FOR [6230CM] (FLAP XMSN TORQUE SHAFT)
575EB
FOR [6274CM] (FLAP XMSN TORQUE SHAFT)
675CB
FOR [6280CM] (FLAP XMSN TORQUE SHAFT)
675EB

D. Referenced Information

REFERENCE	DESIGNATION
TASK 27-50-00-400-003-A	Installation of the Lock-Torque Shaft - Flaps and Slats (98D27504030001)
TASK 27-50-00-866-008-A	Extension of the Flaps on the Ground
TASK 27-50-00-866-008-A-01	Extension of the Flaps/Slats on the Ground
TASK 27-50-00-866-009-A	Retraction of the Flaps on the Ground
TASK 27-50-00-866-009-A-01	Retraction of the Flaps/Slats on the Ground
TASK 27-54-00-710-001-A	Operational Test of the Flap System
TASK 27-54-44-400-002-A	Installation of the Steady Bearings
TASK 27-60-00-866-002-A	Extension-Retraction of the Spoilers for Maintenance
Torque Shafts - Flap Power Transmission ** ON A/C NOT FOR ALL
Torque Shafts - Flap Power Transmission ** ON A/C NOT FOR ALL
Torque Shafts- Flap Power Transmission

3. Job Set-up
Subtask 27-54-45-941-087-A

A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the flap/slat controls.

Subtask 27-54-45-860-073-A

B. Aircraft Maintenance Configuration

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Make sure that the flaps are fully extended (Ref. AMM TASK 27-50-00-866-008).
(2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the flap/slat control lever on panel 114VU.
(3) Make sure that the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is in the applicable position.
(4) Make sure that the applicable access panels are removed:

for 6224CM, panel 575CB
for 6274CM, panel 675CB
for 6230CM, panel 575EB
for 6280CM, panel 675EB.

(5) Make sure that the applicable spoiler is in the 'M' (Maintenance) position (Ref. AMM TASK 27-60-00-866-002).
(6) Make sure that the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER is on the piston rod of the servo-control.
(7) Make sure that the 98D27504030001 LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT is installed on the flap torque shaft (Ref. AMM TASK 27-50-00-400-003), outboard of the removed component.

Subtask 27-54-45-865-091-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
** ON A/C ALL
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21

4. Procedure

CAUTION: BE CAREFUL WHEN YOU DO MAINTENANCE TASKS ON THE WING TRAILING EDGE:

DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE RACEWAYS.
DO NOT CAUSE DAMAGE TO THE ELECTRICAL CABLE INSTALLATIONS.
MAKE SURE THAT THE ELECTRICAL CABLES ARE INSTALLED CORRECTLY. INCORRECT INSTALLATION CAN CAUSE DAMAGE.

Subtask 27-54-45-420-073-A

A. Preparation for Installation
(1) Clean the component interface and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Apply a thin layer of Mineral Oil base Grease-Anti-Fretting Paste - (Material No.03FDB1) to the torque shaft splines.

Subtask 27-54-45-420-060-A

B. Installation of the Torque Shafts 6224CM(6274CM)/6230CM(6280CM)
(1) Install the torque shaft (83).
(2) Install the applicable steady bearing (82) (Ref. AMM TASK 27-54-44-400-002):
(a) FOR [6224CM] (FLAP XMSN TORQUE SHAFT)
install the steady bearing 6225CM
(b) FOR [6230CM] (FLAP XMSN TORQUE SHAFT)
install the steady bearing 6229CM
(c) FOR [6274CM] (FLAP XMSN TORQUE SHAFT)
install the steady bearing 6275CM
(d) FOR [6280CM] (FLAP XMSN TORQUE SHAFT)
install the steady bearing 6279CM.
(3) Make sure that:

you cannot see the spline engagement grooves on the shaft (83) at the movable joints
the dimension A is a minimum of 6.5 mm (0.2559 in.) total end float at the movable joint.

Subtask 27-54-45-865-105-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 NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B07
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1	6CV	B02
** ON A/C ALL
121VU	FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2	8CV	Q21

Subtask 27-54-45-710-060-A

D. Operational Test of the Flap System
(1) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION from the flap/slat control lever.
(2) Retract the flaps fully (Ref. AMM TASK 27-50-00-866-009).
(3) Do an operational test of the flap system (Ref. AMM TASK 27-54-00-710-001). Make sure that the operation of the torque shafts is satisfactory.

5. Close-up
Subtask 27-54-45-410-062-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER from the piston rod of the servo-control.
(3) Put the applicable spoiler back to the 'O' (Operation) position (Ref. AMM TASK 27-60-00-866-002).
(4) On the servo-control, make sure that the pointer on the hex-head is opposite the letter 'O' (Operation) on the housing.
(5) Install the applicable access panel:
(a) FOR [6224CM] (FLAP XMSN TORQUE SHAFT)
install 575CB
(b) FOR [6274CM] (FLAP XMSN TORQUE SHAFT)
install 675CB
(c) FOR [6230CM] (FLAP XMSN TORQUE SHAFT)
install 575EB
(d) FOR [6280CM] (FLAP XMSN TORQUE SHAFT)
install 675EB.

Subtask 27-54-45-942-060-A

B. Removal of Equipment
(1) Remove the safety barriers.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.03.31 23:53:40 UTC