Over Pressure Valve of Engine 1 Failed in Open or Close Position

TASK 36-11-00-810-978-A
Over Pressure Valve of Engine 1 Failed in Open or Close Position

1. Possible Causes

VALVE-OVERPRESSURE, ENG 1 [7115HM1]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 36-11-53-000-802	Removal of the Overpressure Valve
AMM 36-11-53-400-802	Installation of the Overpressure Valve
AMM 36-11-53-720-802	Functional Test of the Overpressure Valve with the Bleed Test Set P/N 98D36109001000

3. Fault Confirmation
Subtask 36-11-00-710-442-A ** ON A/C NOT FOR ALL

A. Not applicable

4. Fault Isolation
Subtask 36-11-00-810-344-A ** ON A/C NOT FOR ALL

A. If the fault symptom is identified by the maintenance message OVPRESS-V (7115HM1) and the overpressure valve is blocked.
(1) Do a functional test of the Over-pressure valve AMM 36-11-53-720-802.
(2) If the test confirms the fault:

Replace the VALVE-OVERPRESSURE, ENG 1 [7115HM1] AMM 36-11-53-000-802 and AMM 36-11-53-400-802.

Subtask 36-11-00-710-443-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 04:33:52 UTC