(d) Slightly pull AGB forward and remove gasket seal.
(e) Install tool blanking plate, O-ring located AGB side (forward) between AGB and TGB (Ref. Fig. 542/TASK 71-00-00-991-370) section B.
NOTE : Offset hole is located at 4.30 o'clock aft looking
____
forward.
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(f) Install two centering pins of tool into holes located at 10.30 and 2.30 o'clock.
(g) Tighten pins to center AGB and TGB.
(h) Install bolt head forward in 6.30 o'clock position and secure with washer and nut handtight.
(i) Remove one centering pin and install a bolt, head forward, threads lightly coated with graphite grease (Material No. CP2101) . Secure with washer and nut handtight.
(j) Remove remaining centering pin and install a bolt, head forward, threads lightly coated with graphite grease (Material No. CP2101) . Secure with washer and nut handtight.
(k) Install remaining bolts, head forward, threads lightly coated with graphite grease (Material No. CP2101). Secure with corresponding washers and nuts.
(l) TORQUE all nuts to between 250 and 280 lbf.in (2.82 and 3.16 m.daN).
(4) Install pressurization assy of tool set (856A2707), as follows: (Ref. Fig. 542/TASK 71-00-00-991-370)
(a) Lightly coat O-ring with engine oil (Material No. CP2442) and install in groove of handcranking support.
(b) Lightly coat threads of bolts with graphite grease (Material No. CP2101) .
(c) Install pressurization assy in handcranking location on front face of AGB.
(d) Secure with bolts provided.
(5) Remove blanking plugs from drain tubes of set and install drain tubes on following drain nipples
(a) Starter pad.
(b) IDG pad.
(c) Hydraulic pump pad.
(d) Fuel pump pad.
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(6) Connect the hose assembly equipped with connection and gauge to the handcranking support assy. (Ref. Fig. 542/TASK 71-00-00-991-370)
Subtask 71-00-00-790-052
C. Perform Leak Test as follows
(Ref. Fig. 542/TASK 71-00-00-991-370)
WARNING : DO NOT USE OXYGEN BOTTLE AS A PRESSURE SOURCE AS IT COULD
_______ CREATE AN EXPLOSIVE HAZARD. USE ONLY A PNEUMATIC SOURCE OR NITROGEN QUALITY R.
(1) Connect flexible hose assy of tool set (856A2707) to flexible hose of the CART, NITROGEN - FUEL MANIFOLD PRESSURE CHECK (856A1115).
(2) Test Requirements
(a) Water content: Dew point 40 deg.C (104 deg.F) at ambient pressure.
(b) Temperature: Ambient.
(c) Air filtration: Residual oil lower than 40 mg per kg of air.
(d) Pressure range: between 10 psi (0.7 bar) and 12 psi (0.8 bar).
(3) Pressurize the accessory drive and place flexible hoses in a bucket of water and check there are no bubbles in water.
(a) Remove and replace any leaking carbon seal or its mating ring.
(b) Repeat pressure test after replacement of leaking seal.
(4) Disconnect flexible hole of cart, (856A1115), from hose of set, (856A2707).
Subtask 71-00-00-080-051
D. Remove AGB Leak Test Tool Set, (856A2707) as follows:
(Ref. Fig. 542/TASK 71-00-00-991-370)
(1) Disconnect hose assembly from handcranking support of tool. Remove handcranking support from AGB.
(2) Disconnect drain tubes from the drain nipples on AGB.
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ECES E E 56-5B E E E (3) Remove AGB/TGB coupling tube blanking plate as follows:
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(a) Lightly coat a serviceable gasket with engine oil (Material No. CP2442).
(b) Remvove nuts and washers securing AGB to TGB.
(c) Carefully remove the bolts while maintaining the AGB.
(d) Slightly pull AGB forward and remove blanking plate.
(e) Install gasket seal between AGB and TGB. NOTE : Offset hole is located at 4.30 o'clock aft looking
____
forward.
(f) Install two centering pins of tool into holes located at 10.30 and 2.30 o'clock.
(g) Tighten pins to center AGB and TGB.
(h) Install lower bracket with bolt, head forward in 6.30 o'clock position and secure with washer and nut handtight. (Ref. Fig. 535/TASK 71-00-00-991-364) 中國航空網 m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320飛機維護手冊 AMM 動力裝置 POWER PLANT 1(79)
