- replace the APU BLEED CHECK-VALVE (7260HM) (Ref. AMM TASK 36-12-51-000-002) and (Ref. AMM TASK 36-12-51-400-002).
(b) If the test of the APU BLEED CHECK-VALVE (7260HM) is OK:
- do a check for damage/contamination of the DIFFERENTIAL PRESSURE TRANSDUCER (8043KM) and TOTAL PRESSURE TRANSDCER (8044KM).
- remove the tube of the DIFFERENTIAL PRESSURE TRANSDUCER (8043KM). (Ref. AMM TASK 49-51-16-000-002).
- remove the tube of the TOTAL PRESSURE TRANSDUCER (8044KM). (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 (8043KM) (Ref. AMM TASK 49-51-16-400-002).
- install the tube of the TOTAL PRESSURE TRANSDUCER (8044KM) (Ref. AMM TASK 49-51-17-400-002).
(c) If the fault continues:
- replace the DIFFERENTIAL PRESSURE TRANSDUCER (8043KM) (Ref. AMM TASK 49-51-16-000-002) and (Ref. AMM TASK 49-51-16-400-002).
- replace the TOTAL PRESSURE TRANSDUCER (8044KM) (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 (8058KM) (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).
R **ON A/C 001-049, 101-105, 107-107, 151-199, 201-210,
B. Do the test given in para. 3.
「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 A252
201-210, Config-1 Aug 01/05 CES TASK 49-00-81-810-848
APU AUTO SHUTDOWN - REVERSE FLOW, SCV Position disagrees with Command (131-9(A))
1. Possible Causes_______________
- SCV POSITION DISAGREES WITH COMMAND
- damage/leakage of the fuel supply and return lines
- SURGE CONTROL VALVE (P18)
- ECB (59KD)
- SURGE CONTROL VALVE (8058KM)
2. Job Set-up Information______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 49-00-00-860-008 APU Start by External Power (131-9(A))
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__________________
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
SCV POSITION DISAGREES WITH COMMAND
(4) Start the APU and apply Bleed Air for 20 seconds, minimum (Ref. AMM TASK 49-00-00-860-008).
「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 A253
201-210, Config-1 Aug 01/05 CES
4. Fault Isolation
_______________ 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
SURGE CONTROL VALVE P18
associated with Fault Code Numbers (FCN) 87
- do a check of damage/leakage of the fuel supply and return lines of the SURGE CONTROL VALVE (P18).
(1) If there is damaged/leaking in the fuel supply and return lines:
- do a repair.
(2) If the fuel supply and return lines are OK:
- replace the SURGE CONTROL VALVE (P18) (Ref. AMM TASK 49-51-52-000-003) and (Ref. AMM TASK 49-51-52-400-003).
(a) 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).
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