Replenish PCU Gearbox to Confirm Fluid Level

TASK 12-13-27-612-002-A
Replenish PCU Gearbox to Confirm Fluid Level

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

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.

ZONE: 147
ZONE: 148
FIN: 6201CM

1. Reason for the Job
Refer to the MPD TASK: 275451-01
REPLENISH PCU GEARBOX TO CONFIRM FLUID LEVEL
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	CONTAINER 1 L (1/4 USGAL)
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 2.5 and 2.0 m.daN (18.44 and 14.75 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03ABB1)	Synthetic base Lubricating Oil-Turbine Engine Low Temp. -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
147	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT
148	MAIN GEAR WELL AND HYDRAULIC COMPARTMENT

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	PACKING	AIPC 27-54-51-01-250

E. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
Flap Power-Control Unit (6201CM)

3. Job Set-up
Subtask 12-13-27-941-053-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) On the panel 400VU:

Make sure that the landing-gear control-lever 6GA is in the DOWN position.
Put the WARNING NOTICE(S) in position to tell persons not to operate the landing gear or the landing gear doors.

Subtask 12-13-27-010-054-A

B. Get Access
(1) Open the Main Gear Doors (Ref. AMM TASK 32-12-00-010-001).
(2) Make sure that the 460005835 SLEEVE - GROUND LOCK are on the main gear door actuators.

Subtask 12-13-27-864-050-A

C. Depressurize the Hydraulic Systems
(1) Depressurize the Green and Yellow hydraulic systems (Ref. AMM TASK 29-10-00-864-001) (Ref. AMM TASK 29-10-00-864-002).

Subtask 12-13-27-865-053-A

D. Open, safety and tag 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

4. Procedure
Subtask 12-13-27-612-051-A

A. Oil Replenishment of the Flap PCU Gearbox
(1) Put a CONTAINER 1 L (1/4 USGAL) below the flap PCU.
(2) Remove the oil-fill plug (1).
(3) Remove and discard the packing (2).
(4) Slowly add Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) to the flap PCU gearbox while measuring the quantity of oil being added. Immediately stop adding oil when the oil starts to come out of the oil-fill hole.

NOTE: Record the quantity of oil added to the PCU gearbox. If:

Less than 50 cm3 (3.05 in.3) of oil was added, no maintenance action is necessary
Between 50 cm3 (3.05 in.3) and 70 cm3 (4.27 in.3) of oil was added, replace the PCU at (or before) the next scheduled maintenance check. This must be no more than 600 flight hours or 750 flight cycles or 100 days.
More than 70 cm3 (4.27 in.3) of oil was added, replace the PCU before 20 flight cycles have been completed.

(5) Clean the oil-fill plug (1) with a clean Textile-Lint free Cotton - (Material No.14SBA1) .
(6) Lubricate the new AIPC 27-54-51-01-250 PACKING (2) with Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) .
(7) Install the new packing (2) on the oil-fill plug (1).
(8) Install the oil-fill plug (1).
(9) TORQUE the oil-fill plug (1) to between 2.5 and 2.0 m.daN (18.44 and 14.75 lbf.ft )

.
(10) Remove the unwanted oil from near the oil-fill plug (1) with a clean cloth.
(11) Examine the packing (2) for signs of an oil leak.
(12) Remove the container.

5. Close-up
Subtask 12-13-27-410-053-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the Main Gear Doors (Ref. AMM TASK 32-12-00-410-001).

Subtask 12-13-27-865-054-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 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 12-13-27-942-055-A

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

[Rev.10 from 2021] 2026.04.01 04:27:32 UTC