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C. Installation of the HPTACC Manifold:
CAUTION : BE CAREFUL NOT TO CUT OR DENT THE INSULATION FOIL THAT COVERS
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THE HPTACC MANIFOLD.
ENGINE EFFICIENCY COULD BE AFFECTED.
(1) Remove the protective covers from the open ends of the HPTACC manifold (490), the open pads of the combustion case and the open ports of the HPTACC valve.
(2) Install a serviceable C-seal (680) on the upper combustion case pad. Align the holes in the C-seal (680) with the holes in the combustion case pad.
(3) Install a serviceable C-seal (680) on the lower combustion case pad. Align the holes in the C-seal (680) with the holes in the combustion case pad.
(4) Put the manifold (490) in position on the upper and lower combustion case pads.
(5) Apply a thin layer of graphite grease (Material No. CP2101) to the threads and friction surfaces of the bolts (670), (720), (600), (550), (540).
(6) Temporarily install the bolts (670) in the manifold (490) and the upper and lower combustion case pads. Do not tighten the bolts (670) at this time.
(7) Install the bolts (720), nuts (690), serviceable gasket (700) and plate (710) between the forward 4-bolt pad of the HPTACC manifold
(490) and the air manifold (730). Ensure that one gasket (700) is installed on each side of the plate (710) and that the bolt heads are on the forward side. TORQUE the bolts (720) to between 55 and 70 lbf.in (0.62 and 0.79 m.daN).
(8) Install the V-clamp (740) and a serviceable seal (750) between the large forward port of the HPTACC manifold (490) and the discharge port of the HPTACC valve at 3 o'clock. TORQUE to between 70 and 80 lbf.in (0.79 and 0.90 m.daN).
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(9) TORQUE the bolts (670) at the upper combustion case pad to between 55 and 70 lbf.in (0.62 and 0.79 m.daN).
(10) TORQUE the bolts (670) at the lower combustion case pad to between 55 and 70 lbf.in (0.62 and 0.79 m.daN).
(11) Wirelock the bolts (670) at the upper combustion case pad with lockwire 0.032 in. (0.8 mm) dia (Material No. CP8001) or lockwire
0.032 in. (0.8 mm) dia (Material No. CP8002)
(12) Wirelock the bolts (670) at the lower combustion case pad with lockwire 0.032 in. (0.8 mm) dia (Material No. CP8001) or lockwire
0.032 in. (0.8 mm) dia (Material No. CP8002).
(13) Put the strap clamp (780) on the HPTACC manifold (490) and the support bracket assembly (70) at the fuel nozzle in position 6. Install the bolts (790), washers (770), and nuts (760).
(14) TORQUE the bolts (790) to between 55 and 70 lbf.in (0.62 and 0.79 m.daN).
(15) Put the strap clamp (610) on the HPTACC manifold (490) at the bracket
(620) between flange R and flange S. Install the bolts (600).
(16) TORQUE the bolts (600) to between 55 and 70 lbf.in (0.62 and 0.79 m.daN).
(17) Put the strap clamp (560) on the HPTACC manifold (490) at the bracket
(570) at the combustion case end of the upper RH LPT cooling tube (440). Install the bolts (550), washers (580), and nuts (590).
(18) TORQUE the bolts (550) to between 55 and 70 lbf.in (0.62 and 0.79 m.daN).
(19) Put the strap clamp (530) on the HPTACC manifold (490) at the bracket
(520) at the combustion case end of the lower RH LPT cooling tube (410). Install the bolts (540), washers (510), and nuts (500).
(20) TORQUE the bolts (540) to between 55 and 70 lbf.in (0.62 and 0.79 m.daN).
(21) If removed, install the LPTACC tube (470) as follows:
(a) Remove the protective covers from the open ends of the LPTACC tube (470) and the open end of the LPTACC valve.
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(b) Ensure that the piston ring (650) is installed on the aft end of the LPTACC tube (470).
(c) Carefully engage the aft end of the LPTACC tube (470) in the LPTACC air manifold.
(d) Attach the forward end of the LPTACC tube (470) to the LPTACC valve with the clamp assembly (480). Hand tighten the nut on the clamp assembly. 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 發動機燃油和控制 ENGINE FUEL AND CONTRO(62)
