Fault of the System Pressure Indication of the Yellow Hydraulic System on the ECAM Lower DU

TASK 29-13-00-810-809-A
Fault of the System Pressure Indication of the Yellow Hydraulic System on the ECAM Lower DU

1. Possible Causes

HYDR. PRESSURE TRANSMITTER [3065GN]
CONTACTOR [3805GX]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
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 29-24-55-000-001	Removal of the Contactor - Yellow Electric Pump Supply
AMM 29-24-55-400-001	Installation of the Contactor - Yellow Electric Pump Supply
AMM 29-32-11-000-003	Removal of the Hydraulic Pressure Transducer
AMM 29-32-11-400-003	Installation of the Hydraulic Pressure Transducer

3. Fault Confirmation
Subtask 29-13-00-710-061-A

A. Test

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) Pressurize the Yellow hydraulic system with the E-pump AMM 29-24-00-863-001.
(2) Operate the rudder pedals.
(3) Make sure that the rudder operates.
(4) De-pressurize the Yellow hydraulic System AMM 29-24-00-864-001.

4. Fault Isolation
Subtask 29-13-00-810-060-A

A. If, during the test, the operation of the rudder is correct, but the HYD page on the ECAM lower DU shows for the Yellow hydraulic system the subsequent condition:

the system pressure indication in amber (less than 1450 PSI),
the system pressure identification (YELLOW) in white,
the system arrow in green,
replace the HYDR. PRESSURE TRANSMITTER [3065GN] AMM 29-32-11-000-003 and AMM 29-32-11-400-003.
The system arrow in white,
replace the contactor yellow electrical pump supply CONTACTOR [3805GX] AMM 29-24-55-000-001 and AMM 29-24-55-400-001.

Subtask 29-13-00-710-062-A

B. Do the test given in Para. 3

[Rev.8 from Aug 2018] 2026.04.04 04:29:26 UTC