R minutes before you do this procedure.
R (3) On the overhead maintenance panel 50VU:
R (a) Make sure that the ON legend of the ENG/FADEC GND PWR/1 (2)
R pushbutton switch is off.
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R (b) Put a warning notice to tell persons not to energize the FADEC 1 R (2).
R Subtask 72-56-00-010-068
R B. Get Access
R (1) Remove the core nozzle assembly (Ref. TASK 78-11-11-000-041).
R (2) Remove the centerbody (Ref. TASK 78-11-12-000-041).
R (3) Remove the flame arrestor and the flange assembly (Ref. TASK 72-56-R 00-000-001).
R NOTE : Discard the gasket seal installed between the flame arrestor
____ R and the flange assembly.
R 4. Procedure
_________
R Subtask 72-56-00-300-051
R A. Replacement of the Oil Supply Tube Assembly R (Ref. Fig. 802/TASK 72-56-00-991-311)
R (1) Disconnect the oil supply tube assembly (10) from the rear sump oil R supply tube (60) as follows:
R WARNING : ENGINE OIL IS TOXIC. USE PERSONAL PROTECTION EQUIPMENT. USE
_______ R IN A WELL-VENTILATED AREA.
R (a) Put a container under the engine, before you disconnect the R coupling nut (20) of the oil supply tube assembly (10), to R collect the drained oil.
R CAUTION : USE TWO WRENCHES TO LOOSEN OR TIGHTEN THE TUBE COUPLING
_______ R NUTS. ONE WRENCH TO HOLD THE UNION AND ONE TO LOOSEN OR R TIGHTEN THE COUPLING NUT. THIS PREVENTS DAMAGE TO THE R HARDWARE.
R (b) Loosen the coupling nut (20), which attaches the rear sump R oil-supply tube (60) to the oil supply tube assembly (10).
R (c) Loosen the bolt and nut that attach the rear sump oil-supply tube R (60) through the shield and clamp from the turbine rear-frame R outer case.
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(d) Disconnect the coupling nut (20) of the oil supply tube assembly
(10) from the rear sump oil tube (60) at the turbine rear-frame outer case.
(2) Remove the oil supply tube assembly as follows:
(a) Cut and remove the safetywires from the coupling nuts.
CAUTION : USE TWO WRENCHES TO LOOSEN OR TIGHTEN THE TUBE COUPLING
_______ NUTS. ONE WRENCH TO HOLD THE UNION AND ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT. THIS PREVENTS DAMAGE TO THE HARDWARE.
(b) Loosen the coupling nut between the damping oil tube (110) and the oil tube (50).
(c) Loosen the coupling nut (80) between the oil supply tube assembly
(10) and the oil tube (50).
(d) Loosen the coupling nut between the oil tube (50) and the nipple
(120) on the oil inlet cover (100).
(e) Disconnect and remove the oil tube (50).
(f) Pull and remove the retaining ring (90), which attaches the
coupling nut (80) on the oil supply tube (80). Use the tool set R FIXTURE INSTALLATION AND REMOVAL to remove the retaining ring.
(g) Remove the coupling nut (80) from the oil supply tube assembly (10).
(h) Pull the oil supply tube (70) down through the No. 10 strut at 7 o'clock position to fully disengage its guide bushing from the boss.
(i) Remove the oil supply tube (70) from the turbine rear-frame outer case.
(3) Clean the turbine rear-frame inner hub area; use a lint-free cotton cloth MISCELLANEOUS (Material No. 19-003).
NOTE : Make sure that you clean the turbine rear-frame inner hub area
____ before installation of the oil supply tube.
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R Removal/Installation of the Oil Supply Tube Assembly R Figure 802/TASK 72-56-00-991-311- 12 (SHEET 1)
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R Removal/Installation of the Oil Supply Tube Assembly R Figure 802/TASK 72-56-00-991-311- 22 (SHEET 2)
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(4) Installation of the oil supply tube assembly (10) as follows:
(a) Apply a thin layer of molykote G rapid plus (solid lubricant) (Material No. CP2104) with a spray gun on the guide bushing of the oil supply tube (70).
(b) Insert the oil supply tube (70) into the No. 10 strut of the turbine rear frame at the 7 o'clock position. 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320飛機維護手冊 AMM ENGINE 發動機 2(119)
