Replenishment of the Alternate Brake Reservoir

TASK 12-12-32-611-002-A
Replenishment of the Alternate Brake Reservoir

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: OBEY THE HYDRAULIC SAFETY PROCEDURES.

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

FIN: 2624GM ** ON A/C NOT FOR ALL

1. Reason for the Job

NOTE: This procedure will let you replenish the alternate brake reservoir. But, if the reservoir is empty, you must do a bleed procedure of the complete system (Ref. TASK 32-43-00-612-001-A, Filling and Bleeding of the Low Pressure Control of the Alternate Braking).

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	1	CONTAINER - CLEAN, APPLICABLE
No specific	AR	FILLING EQUIPMENT - BRAKE RESERVOIR
No specific	AR	HOSE - VINYL
No specific	AR	SAFETY BARRIER(S)
No specific	1	WARNING NOTICE(S)
No specific	Torque wrench: range to between 1.25 and 1.1 m.daN (110.62 and 97.35 lbf.in )
No specific	Torque wrench: range to between 1.65 and 1.35 m.daN (146.02 and 119.47 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
811

D. Referenced Information

REFERENCE	DESIGNATION
TASK 32-43-00-612-001-A	Filling and Bleeding of the Low Pressure Control System of the Alternate Braking
TASK 32-43-00-612-001-A-01	Filling and Bleeding of the Low Pressure Control System of the Alternate Braking using Green Reservoir fluid
Alternate-Brake Reservoir Replenishment - Detail and Location

3. Job Set-up
Subtask 12-12-32-941-052-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) On panel 400VU, make sure the landing-gear control-lever (6GA) is in the DOWN position.
(3) On panel 110VU, make sure the parking-brake switch is in the OFF position.
(4) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the brake controls.
(5) Put the ACCESS PLATFORM 2M (6 FT) at the access door 811.

Subtask 12-12-32-010-051-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the access door 811.

4. Procedure
Subtask 12-12-32-614-075-A ** ON A/C NOT FOR ALL

A. Preparation for Replenishment
(1) Remove the blanking cap (4) from the filling valve (3) and disconnect the drain line (5) from the bleed valve (1).
(2) Install a HOSE - VINYL to the bleed valve (1).
(3) Put the HOSE - VINYL into a CONTAINER - CLEAN, APPLICABLE filled with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) . Make sure there are no air bubbles in the fluid.
(4) Make sure that the pipes on the FILLING EQUIPMENT - BRAKE RESERVOIR are filled with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) and there are no air bubbles in it.
(5) Connect the pipe of the FILLING EQUIPMENT - BRAKE RESERVOIR to the filling valve (3).

Subtask 12-12-32-611-050-A ** ON A/C NOT FOR ALL

B. Replenishment of the Alternate Brake Reservoir

NOTE: This procedure will let you replenish the alternate brake reservoir. If the reservoir is empty, you must do a bleed procedure of the complete system (Ref. AMM TASK 32-43-00-612-001).

(1) Open the bleed valve (1):

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) Remove and discard the lockwire from the bleed valve (1).
(b) Open the bleed valve (1).
(2) Use the handpump to fill the brake reservoir (2) with Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) .
(3) Keep the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) flow rate constant and at a pressure of less than 4 bar (58 psi) as shown on the pressure gage.
(4) When there is no air bubbles seen in the Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) that comes from the bleed valve (1), close the bleed valve (1).
(5) Open the bleed valve (1) and put the brake reservoir (2) to its correct level (on the green ring). Close the bleed valve (1).
(6) Remove the HOSE - VINYL from the bleed valve (1) and disconnect the pipe from the filling valve (3).
(7) Make sure that there is no leakage of fluid from the bleed valve (1).

(8) Safety the bleed valve (1) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(9) Install the blanking cap (4) on the filling valve (3).
(10) TORQUE the blanking cap (4) to between 1.25 and 1.1 m.daN (110.62 and 97.35 lbf.in )

.
(11) Install the drain line (5) on the bleed valve (1).
(12) TORQUE the drain line (5) to between 1.65 and 1.35 m.daN (146.02 and 119.47 lbf.in )

5. Close-up
Subtask 12-12-32-410-051-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 811.

Subtask 12-12-32-942-053-A ** ON A/C NOT FOR ALL

B. Removal of Equipment
(1) Remove the SAFETY BARRIER(S).
(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] 2026.04.01 12:32:03 UTC