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REFERENCE DESIGNATION
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AMM 49-51-52-000-003 Removal of the Surge Control Valve (8058KM) (131-9(A)) AMM 49-51-52-400-003 Installation of the Surge Control Valve (8058KM) (131-9(A)) AMM 49-61-34-000-003 Removal of the Electronic Control Box (ECB) (131-9(A)) AMM 49-61-34-400-003 Installation of the Electronic Control Box (ECB) (131-9(A))
3. Fault Confirmation
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A. Read-out of ECB Trouble-Shooting Data
(1) Put the APU MASTER SW to the ON position.
(2) Get access to the APU SHUTDOWN report.
(3) Push the '>' adjacent to LRU DATA:
- the MCDU menu shows
NO LRU FAULT DETECTED
(4) Start the APU and apply Bleed Air for 20 seconds, minimum (Ref. AMM TASK 49-00-00-860-008).
4. Fault Isolation
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R **ON A/C 001-049, 101-105, 107-107, 151-154, 201-207,
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
REVERSE FLOW
DP XDCR P24/PT XDCR P23/ SURGE CONTROL VALVE P18
associated with Fault Code Numbers (FCN) 216
- do a check for blockage of the APU inlet.
(1) If the fault continues:
- do a check of the APU BLEED CHECK-VALVE (7260HM) (Ref. AMM TASK 36-12-51-200-001).
(a) If the test of the APU BLEED CHECK-VALVE (7260HM) fails:
- replace the APU BLEED CHECK-VALVE (7260HM) (Ref. AMM TASK 36-12-51-000-002) and (Ref. AMM TASK 36-12-51-400-002).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page A250
201-210, Config-1 Aug 01/05 CES (b) If the test of the APU BLEED CHECK-VALVE (7260HM) is OK:
- do a check for damage/contamination of the DIFFERENTIAL PRESSURE TRANSDUCER (P24) and TOTAL PRESSURE TRANSDCER (P23)
- remove the tube of the DIFFERENTIAL PRESSURE TRANSDUCER (P24) (Ref. AMM TASK 49-51-16-000-002).
- remove the tube of the TOTAL PRESSURE TRANSDUCER (P23) (Ref. AMM TASK 49-51-17-000-002).
- put plugs in the openings.
- use a air source to remove unwanted materials out of the tubes.
NOTE : It is recommended to use a pressure of 60-90 psig
____ (4.14-6.20 bar) of filtered air or nitrogen to blow the air through the tubes.
R - remove the plugs from the openings.
- install the tube of the DIFFERENTIAL PRESSURE TRANSDUCER (P24) (Ref. AMM TASK 49-51-16-400-002).
- install the tube of the TOTAL PRESSURE TRANSDUCER (P23) (Ref. AMM TASK 49-51-17-400-002).
(c) If the fault continues:
- replace the DIFFERENTIAL PRESSURE TRANSDUCER (P24) (Ref. AMM TASK 49-51-16-000-002) and (Ref. AMM TASK 49-51-16-400-002).
- replace the TOTAL PRESSURE TRANSDUCER (P23) (Ref. AMM TASK 49-51-17-000-002) and (Ref. AMM TASK 49-51-17-400-002).
(d) If the fault continues:
- replace the SURGE CONTROL VALVE (P18) (Ref. AMM TASK 49-51-52-000-003) and (Ref. AMM TASK 49-51-52-400-003).
(e) If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-003) and (Ref. AMM TASK 49-61-34-400-003).
**ON A/C 001-049, 101-105, 151-199, 201-210,
Post SB 49-1062 For A/C 001-049,101-105,151-154,201-207,
A. If an APU auto shutdown occurs during the APU operation and the APU SHUTDOWN report gives the maintenance message:
REVERSE FLOW
PRESS XDCRS (8044KM) /(8043KM) / SCV (8058KM)
associated with Fault Code Numbers (FCN) 216
- do a check for blockage of the APU inlet.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page A251
201-210, Config-1 Aug 01/05 CES (1) If the fault continues:
- do a check of the APU BLEED CHECK-VALVE (7260HM) (Ref. AMM TASK 36-12-51-200-001).
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