Failure of the HP Bleed Valve of the Engine 1 Blocked in the Closed Position
1. Possible Causes
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-VALVE-BLEED PRESS REG (4001HA)
-VALVE-HP BLEED (4000HA)
-XDCR-BLEED TRANSFER PRESS, ENG 1 (7HA1)
-SOL-HP BLEED OVERRIDE, ENG1 (11HA1)
-wiring
-sense line
2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific Torque Wrench : range 0.20 to 3.60 m.daN
(2.00 to 26.00 lbf.ft) 98D36003000000 1 TEST SET - ENGINE BLEED SYSTEM 98F36003002000 1 TEST SET - ENGINE BLEED SYSTEM
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 36-11-15-000-001 Removal of the Bleed Transferred Pressure Transducer (7HA1,7HA2) AMM 36-11-15-400-001 Installation of the Bleed Transferred Pressure
Transducer (7HA1,7HA2) AMM 36-11-51-000-040 Removal of the High Pressure Bleed Valve (4000HA) AMM 36-11-51-400-040 Installation of the High Pressure Bleed Valve
(4000HA) AMM 36-11-51-720-001 Functional Test of the High Pressure (HP) Bleed Valve (4000HA1, 4000HA2) AMM 36-11-58-000-001 Removal of the HP Bleed Override Solenoid (11HA1, 11HA2) AMM 36-11-58-400-001 Installation of the HP Bleed Override Solenoid
(11HA1, 11HA2) AMM 71-00-00-710-003 Engine Automatic Start ASM 36-11/01
1
-EFF : ALL
-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page 277
--Feb 01/05R ---CES -
3. Fault Confirmation
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A. Test.
(1) Not Applicable
4. Fault Isolation
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R **ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,
A. If the fault symptom is identified by the maintenance message: HP BLEED-V 4000HA1 OR SENSE LINE
-Do a check of the unions of the sense line at the VALVE-BLEED PRESS REG (4001HA) and at the VALVE-HP BLEED (4000HA).
(1)
If the unions are loose:
-Tighten these unions again to 1.6 m.daN (11.79 lbf.ft) and refer to Para. 4B.
(2)
If the unions are correct:
-Make sure that the indication of position of the HP bleed valve on the lower ECAM DU is correct when you manually operate the valve shaft.
(a)
If the position on the lower ECAM DU does not agree with the position indicator:
-Replace the VALVE-HP BLEED (4000HA) (Ref. AMM TASK 36-11-51-000-040) and (Ref. AMM TASK 36-11-51-400-040).
(b)
If the position on the lower ECAM DU agrees with the position indicator:
-Disconnect the sense line from the HP bleed valve of the engine
1.
-Install a cap 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 (Ref. AMM TASK 36-11-51-720-001).
1 If the test is not OK:
_
-Replace the VALVE-HP BLEED (4000HA) of the engine 1 (Ref. AMM TASK 36-11-51-000-040) (Ref. AMM TASK 36-11-51-400-040).
2 If the test is OK:
_
-Replace the sense line between the HP bleed valve and the bleed pressure regulator valve VALVE-BLEED PRESS REG (4001HA) of the engine 1.
3 If the fault continues:
_
-Replace the XDCR-BLEED TRANSFER PRESS, ENG 1 (7HA1), (Ref. AMM TASK 36-11-15-000-001) and (Ref. AMM TASK 36-11-15-400-001).
1 -EFF : ALL
-∞∞36-11-00∞∞∞∞∞∞∞∞∞∞Page 278
--May 01/05 ---CES - 4 If the fault continues:
_
-Do a check and repair the wiring from the HP bleed valve to the BMC1, pins A/1 and A/5 to pins AA/14A and AA/15A (Ref. ASM 36-11/01).
-Refer to Para. 4B.
R **ON A/C 151-199, 401-499,
A. If the fault symptom is identified by the maintenance message: HP BLEED-V 4000HA1 OR SENSE LINE
-do a check of the unions of the sense line from the bleed pressure-regulator valve (4001HA) and the HP bleed valve (4000HA) and to the HP bleed valve closure control solenoid (11HA1).
(1)
If the unions are loose:
-tighten these unions again (to 1.6 m.daN (11.79 lbf.ft)) and refer to Para. 4B.
(2)
If the unions are correct:
-make sure that the indication of the HP bleed valve position on the lower ECAM display unit is correct when you manually operate the valve shaft.
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