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3. Job Set-up __________ Subtask 72-23-00-941-085
A. Safety Precautions (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a warning notice to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a warning notice to tell persons not to energize the FADEC 1(2).
Subtask 72-23-00-010-108 B. Get Access (1) Open the fan cowl doors: (Ref. TASK 71-13-00-010-040) FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
(2) Put the access platform in position.
4. Procedure _________ R (Ref. Fig. 608/TASK 72-23-00-991-321) Subtask 72-23-00-210-063 A. Visual Inspection of the PS12 Line CAUTION : USE 2 WRENCHES TO REMOVE/INSTALL THE TUBE UNION NUT: ONE TO _______ HOLD THE FITTING, THE OTHER TO LOOSE/TORQUE THE NUT. OTHERWISE, DAMAGE TO THE HARDWARE CAN OCCUR. F 『 EEFF : ALL E Page 64272-23-00 E E May 01/05 E E ECES E
F 『 E C F M E E E E 56-5B E E E
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F 『R E E Page 64372-23-00 E E Aug 01/05 E E ECES E F 『 E C F M E E E E 56-5B E F 『 E C F M E E E E 56-5B E F 『 E C F M E E E E 56-5B E F 『 E C F M E E E E 56-5B E
R PS12 Line Figure 608/TASK 72-23-00-991-321- 14 (SHEET 1) F EEFF : E E ECES ALL 『E 72-23-00EEE Page 644 May 01/05
R PS12 Line Figure 608/TASK 72-23-00-991-321- 24 (SHEET 2) F EEFF : E E ECES ALL 『E 72-23-00EEE Page 645 May 01/05
R PS12 Line Figure 608/TASK 72-23-00-991-321- 34 (SHEET 3) F EEFF : E E ECES ALL 『E 72-23-00EEE Page 646 May 01/05
R PS12 Line Figure 608/TASK 72-23-00-991-321- 44 (SHEET 4) F EEFF : E E ECES ALL 『E 72-23-00EEE Page 647 May 01/05
F 『 E C F M E E E E 56-5B E E E (1) Inspect the PS12 line as follows:
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS ------------------------------------------------------------------------------- 1. Inspect the hose for: - broken hose braid 3 broken wires per plait, and no more than 6 broken wires per assembly, or per lineal 12 in. (305 mm) of hose.
- crimps Not serviceable Replace the PS12 line (Ref. TASK 72-23-00-000-040) and (Ref. TASK 72-23-00-400-040).
Subtask 72-23-00-210-061 B. Visual Inspection of the PS12 Line CAUTION : USE 2 WRENCHES TO REMOVE/INSTALL THE TUBE UNION NUT: ONE TO _______ HOLD THE FITTING, THE OTHER TO LOOSE/TORQUE THE NUT. OTHERWISE, DAMAGE TO THE HARDWARE CAN OCCUR. (1) Inspect the PS12 hose connections as follows: (a) Cut and remove the lockwires.
(b) Disconnect the PS12 hose from the ECU and from the fan frame bosses.
F 『 EEFF : ALL E Page 64872-23-00 E E Aug 01/05 ERE ECES E
F 『 E C F M E E E E 56-5B E E E (c) Inspect the connections as follows:
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS ------------------------------------------------------------------------------- 1. Fitting nuts for: - damaged corners Any amount, provided proper torque can be obtained.
- damaged threads Any amount, provided Chase the threads. effective threads are not reduced by more than one after chasing.
- safetywire hole Serviceable, provided deformation and metal around hole is not wear. cracked or torn.
2. Fittings seating surfaces for: - circumferential Any amount not
scratches detectable with a 0.04 in. (1 mm) radius ball scribe.
- axial scratches Not serviceable Replace the hose or the part.
- nicks, pits Not serviceable Replace the hose or the part.
(2) Clean the weep holes with white spirit (Material No. CP2010) and plastic wire. www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM ENGINE 发动机 2
