Overpressure Valve of the Engine 1 Blocked in the Open Position

TASK 36-11-00-810-843-A
Overpressure Valve of the Engine 1 Blocked in the Open Position

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 361101
AMM 36-11-53-000-001	Removal of the Overpressure Valve
AMM 36-11-53-400-001	Installation of the Overpressure Valve
AMM 36-11-53-720-001	Functional Test of the Overpressure Valves with the Bleed Test Set P/N 98D36003000000

3. Fault Confirmation
Subtask 36-11-00-720-057-A ** ON A/C NOT FOR ALL

A. Test.
(1) Do the functional test of the engine 1 overpressure valve (5HA1) AMM 36-11-53-720-001.

4. Fault Isolation
Subtask 36-11-00-810-091-A ** ON A/C NOT FOR ALL

A. If the functional test of the engine 1 overpressure valve (5HA1) is not correct:

replace the VALVE-OVERPRESSURE, ENG 1 [5HA1] AMM 36-11-53-000-001 and AMM 36-11-53-400-001.

(1) If the fault continues:

do a check and repair the wiring from the overpressure valve to the BMC1 , pin A/1 to pin AA/10A ASM 361101.

(2) If the fault continues:

do a check and repair the wiring between pin A/2 of the overpressure valve and the ground terminal.

Subtask 36-11-00-810-091-B ** ON A/C NOT FOR ALL

A. If the functional test of the engine 1 overpressure valve (5HA1) is not correct:

replace the VALVE-OVERPRESSURE, ENG 1 [5HA1] AMM 36-11-53-000-001 and AMM 36-11-53-400-001.

(1) If the fault continues:

do a check and repair the wiring from the overpressure valve to the BMC1 , pin A/1 to pin AA/10A ASM 361101.

(2) If the fault continues:

do a check and repair the wiring between pin A/2 of the overpressure valve and the ground terminal.

Subtask 36-11-00-710-131-A ** ON A/C NOT FOR ALL

B. After the subsequent flight, make sure that the fault does not continue.

[Rev.8 from Aug 2018] 2026.04.04 04:33:44 UTC