Overheat of the Reservoir for all the Hydraulic Systems

TASK 29-10-00-810-807-A
Overheat of the Reservoir for all the Hydraulic Systems

1. Possible Causes

SDAC-1 [1WV1]
SDAC-2 [1WV2]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 29-11-00-810-802-A	Overheat Indication of the Green Hydraulic System
TSM TASK 29-12-00-810-802-A	Overheat Indication of the Blue Hydraulic System
TSM TASK 29-13-00-810-802-A	Overheat Indication of the Yellow Hydraulic System
AMM 24-41-00-861-002	Energize the Aircraft Electrical Circuits from the External Power
AMM 24-41-00-862-002	De-energize the Aircraft Electrical Circuits Supplied from the External Power
AMM 29-10-00-863-003	Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
AMM 29-10-00-864-003	Depressurize the Blue Hydraulic System
AMM 29-24-00-863-001	Pressurize the Yellow Hydraulic System with the Electric Pump
AMM 29-24-00-864-001	Depressurize the Yellow Hydraulic System
AMM 31-55-34-000-001	Removal of the SDAC
AMM 31-55-34-400-001	Installation of the SDAC
AMM 31-60-00-860-001	EIS Start Procedure
AMM 71-00-00-710-003	Engine Automatic Start
AMM 71-00-00-710-028	Engine Shutdown

3. Fault Confirmation
Subtask 29-10-00-865-052-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	HYD/HYD PWR/B WARN/& CTL	2702GJ	C12
121VU	HYDRAULIC/Y HYD/PUMP ENG2/MONG	3700GD	Q37
121VU	HYDRAULIC/G HYD/PUMP ENG1/MONG	1702GK	R34

Subtask 29-10-00-710-055-A

B. Test

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 TRAVEL RANGES OF THE FLIGHT CONTROLS ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE.

(1) Energize the aircraft electrical circuits
AMM 24-41-00-861-002.
(2) Do an engine automatic start to pressurize the green hydraulic system AMM 71-00-00-710-003.
(3) Pressurize the blue and yellow hydraulic systems with the electric pump AMM 29-10-00-863-003 and AMM 29-24-00-863-001.
(4) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only)
AMM 31-60-00-860-001.
(5) Operate the sidestick for ailerons, spoilers and elevators at full travel for 5 min.
(6) Operate the rudder pedals at full travel for 5 min.
(7) Operate the flap and slat control lever at full travel for 5 min.

4. Fault Isolation
Subtask 29-10-00-810-056-A

A. If the test gives:
- The message HYD G RSVR OVHT on the upper ECAM DU
- The message HYD B RSVR OVHT on the upper ECAM DU
- The message HYD Y RSVR OVHT on the upper ECAM DU
- The OVHT flag on the HYD page of the lower ECAM DU.

(1) Remove the SDAC-1 [1WV1] and the SDAC-2 [1WV2] AMM 31-55-34-000-001.
(2) Do an inspection of the SDAC-1 [1WV1] and SDAC-2 [1WV2] for corrosion and other damage.
(a) If you find corrosion and/or other damage, send the applicable SDAC to the address that follows:

AIRBUS FRANCE SAS, Avionics and Simulation Products.

(b) If no corrosion or damage is found:
1 Install the SDAC-1 [1WV1] and the SDAC-2 [1WV2] AMM 31-55-34-400-001.
2 Do the overheat of the hydraulic reservoir trouble shooting procedure for each of the hydraulic systems:

For the green hydraulic system (Ref. TSM TASK 29-11-00-810-802)
For the blue hydraulic system (Ref. TSM TASK 29-12-00-810-802)
For the yellow hydraulic system (Ref. TSM TASK 29-13-00-810-802).

5. Close-up
Subtask 29-10-00-860-053-A

A. Aircraft Maintenance Configuration
(1) Stop the Engine AMM 71-00-00-710-028.
(2) Make sure that the blue and yellow hydraulic systems are de-pressurized AMM 29-24-00-864-001 and AMM 29-10-00-864-003.
(3) De-energize the aircraft electrical circuits
AMM 24-41-00-862-002.

[Rev.8 from Aug 2018] 2026.04.04 04:29:19 UTC