Bleed Valve of Engine 1 Failed in Open or Close Position

TASK 36-11-00-810-980-A
Bleed Valve of Engine 1 Failed in Open or Close Position

1. Possible Causes

[4001HA]
wiring

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 361101
AMM 36-11-52-000-802	Removal of the Bleed Pressure-Regulator Valve
AMM 36-11-52-400-802	Installation of the Bleed Pressure-Regulator Valve
AMM 36-11-52-720-811	Functional Test of the Pressure Regulator Valve with the Test Set P/N 98D36109001000

3. Fault Confirmation
Subtask 36-11-00-710-446-A ** ON A/C NOT FOR ALL

A. Test
(1) Not applicable.

4. Fault Isolation
Subtask 36-11-00-810-348-A ** ON A/C NOT FOR ALL

A. If the fault is identified by the maintenance message PRESS REG-V (4001HA1):
(1) Do a functional test of the PRV Bleed Valve AMM 36-11-52-720-811.
(a) If the test is not OK:

Replace the [4001HA] AMM 36-11-52-000-802 and AMM 36-11-52-400-802.

(b) If the test is OK:

Continue the trouble shooting procedure.

Subtask 36-11-00-810-349-A ** ON A/C NOT FOR ALL

B. If the fault continues:
(1) Do a check of the wiring between the Bleed Valve (4001HA1) pin A/1 and A/2 to BMC1 (1HA1) pin AB/14C and AA/14B ASM 361101.
(2) If the wiring is damaged:
(a) Repair or replace the wiring .

Subtask 36-11-00-810-350-A ** ON A/C NOT FOR ALL

C. If the fault continues:
(1) Do a check of the wiring between the Bleed Valve (4001HA1) pin A/1 and A/2 to BMC2 (1HA2) pin AB/15C and AB/15B ASM 361101.
(2) If the wiring is damaged:
(a) Repair or replace the wiring .

Subtask 36-11-00-710-447-A ** ON A/C NOT FOR ALL

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

[Rev.8 from Aug 2018] 2026.04.04 04:33:52 UTC