HP Bleed Valve Locked in the Not Fully Open Position on the Engine 1

TASK 36-11-00-810-839-A
HP Bleed Valve Locked in the Not Fully Open Position on the Engine 1

WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK ON THE PNEUMATIC SYSTEM.

WARNING: MAKE SURE THAT PERSONS DO NOT START THE ENGINES DURING THIS PROCEDURE; IT IS DANGEROUS TO WORK ON OR GO NEAR AN ENGINE WHEN IT OPERATES.

1. Possible Causes

XDCR-BLEED TRANSFER PRESS, ENG 1 [7HA1]
VALVE-HP BLEED [4000HA]
sense line between the HP bleed valve (4000HA), the bleed pressure regulator valve (4001HA) and the solenoid (11HA1)

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

REFERENCE	QTY	DESIGNATION
No specific	1	CAP - BLANKING

B. Referenced Information

REFERENCE	DESIGNATION
AMM 36-11-15-000-001	Removal of the Bleed Transferred Pressure-Transducer
AMM 36-11-15-400-001	Installation of the Bleed Transferred Pressure-Transducer
AMM 36-11-15-720-001	Functional Test of the Bleed Transferred Pressure-Transducer with the Bleed Test Set P/N 98D36003000000
AMM 36-11-49-000-029	Removal of the Pneumatic Sense Lines in the Pylon
AMM 36-11-49-400-029	Installation of the Pneumatic Sense Lines in the Pylon
AMM 36-11-51-000-040	Removal of the High Pressure Bleed Valve
AMM 36-11-51-400-040	Installation of the High Pressure Bleed Valve
AMM 36-11-51-720-001	Functional Test of the HP Bleed Valve with the Bleed Test Set P/N 98D36003000000

3. Fault Confirmation
Subtask 36-11-00-710-126-A ** ON A/C NOT FOR ALL

A. Not Applicable

4. Fault Isolation
Subtask 36-11-00-810-089-B ** ON A/C NOT FOR ALL

A. If the fault symptom is identified by the maintenance message:
361151
HP BLEED-V
4000HA1
OR SENSE LINE

do the functional test of the bleed transferred pressure transducer (7HA1) AMM 36-11-15-720-001.

(1) If the test is not OK:

replace the XDCR-BLEED TRANSFER PRESS, ENG 1 [7HA1] AMM 36-11-15-000-001 AMM 36-11-15-400-001
refer to Para. 4.B.

(2) If the test is OK:

disconnect the sense line from the HP bleed valve of the engine 1
put a CAP - BLANKING on the pressure port of the sense line of the HP bleed valve
do a functional test of the opening of the engine 1 HP bleed valve AMM 36-11-51-720-001.

(a) If the test is not OK:

replace the VALVE-HP BLEED [4000HA] of the engine 1 AMM 36-11-51-000-040 AMM 36-11-51-400-040
refer to Para. 4.B.

(b) If the test is OK:

replace the sense line between the HP bleed valve (4000HA), the bleed pressure regulator valve (4001HA) and the solenoid (11HA1) of the engine 1 AMM 36-11-49-000-029 and AMM 36-11-49-400-029.
refer to Para. 4.B.

Subtask 36-11-00-710-127-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