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--Feb 01/05 ---CES -
4. Fault Isolation
_______________
A. If the functional test of the engine 1 overpressure valve (5HA1) is not correct:
-replace the VALVE-OVERPRESSURE, ENG 1 (5HA1) (Ref. AMM TASK 36-11-53-000-001) and (Ref. AMM TASK 36-11-53-400-001).
(1) If the fault continues:
-do a check and repair the wiring between: . pin A/1 of the engine 1 overpressure valve (5HA1) and pin AA/10A of the BMC1 (1HA1) . pin A/2 of the engine 1 overpressure valve and the ground (Ref. ASM 36-11/01).
B. If the functional test of the engine 1 overpressure valve (5HA1) is correct:
-replace the VALVE-HP BLEED (4000HA) (Ref. AMM TASK 36-11-51-000-042) and (Ref. AMM TASK 36-11-51-400-042).
(1) If the fault continues:
-do a leak check of the sense line between the bleed pressure regulator valve (4001HA) and the HP bleed valve (4000HA).
(a)
If there is a leak:
-repair or replace the sense line.
(b)
If there is no leak:
-replace the VALVE-BLEED PRESS REG (4001HA) (Ref. AMM TASK 36-11-52-000-042) and (Ref. AMM TASK 36-11-52-400-042).
C. After the subsequent flight, make sure that the fault does not continue.
1 -EFF : ALL
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--Feb 01/05 ---CES - Failure of the Overpressure Valve in Closed Position on the Engine 2
1. Possible Causes
_______________
-VALVE-OVERPRESSURE, ENG 2 (5HA2)
-VALVE-HP BLEED (4000HA)
-VALVE-BLEED PRESS REG (4001HA)
-wiring
-sense line
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 36-11-51-000-042 Removal of the High Pressure Bleed Valve (4000HA) AMM 36-11-51-400-042 Installation of the High Pressure Bleed Valve (4000HA) AMM 36-11-52-000-042 Removal of the Bleed Pressure Regulator Valve (4001HA) AMM 36-11-52-400-042 Installation of the Bleed Pressure Regulator Valve
(4001HA) AMM 36-11-53-000-001 Removal of the Overpressure Valve (5HA1,5HA2) AMM 36-11-53-400-001 Installation of the Overpressure Valve (5HA1,5HA2) AMM 36-11-53-720-001 Functional Check of the Overpressure Valve 5HA1
(5HA2) ASM 36-11/02
3. Fault Confirmation
__________________
A. Test
(1) Do the functional test of the engine 2 overpressure valve (5HA2) (Ref. AMM TASK 36-11-53-720-001).
1 -EFF : ALL
-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page B229
--Feb 01/05 ---CES -
4. Fault Isolation
_______________
A. If the functional test of the engine 2 overpressure valve (5HA2) is not correct:
-replace the VALVE-OVERPRESSURE, ENG 2 (5HA2) (Ref. AMM TASK 36-11-53-000-001) and (Ref. AMM TASK 36-11-53-400-001).
(1) If the fault continues:
-do a check and repair the wiring between: . pin A/1 of the engine 2 overpressure valve (5HA2) and pin AA/10A of the BMC2 (1HA2) . pin A/2 of the engine 2 overpressure valve and the ground (Ref. ASM 36-11/02).
B. If the functional test of the engine 2 overpressure valve (5HA2) is correct:
-replace the VALVE-HP BLEED (4000HA) (Ref. AMM TASK 36-11-51-000-042) and (Ref. AMM TASK 36-11-51-400-042).
(1) If the fault continues:
-do a leak check on the sense line between the bleed pressure regulator valve (4001HA) and the HP bleed valve (4000HA).
(a)
If there is a leak:
-repair or replace the sense line.
(b)
If there is no leak:
-replace the VALVE-BLEED PRESS REG (4001HA) (Ref. AMM TASK 36-11-52-000-042) and (Ref. AMM TASK 36-11-52-400-042).
C. After the subsequent flight, make sure that the fault does not continue.
1 -EFF : ALL
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--Feb 01/05 ---CES -
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