(2) CONFIGURATION 2 : MAIN FUEL PUMP REPAIRED (SELF ALIGNING NUT AND WASHER)
CAUTION : CONFIGURATION 2 AND CONFIGURATION 3 HAVE VISUALLY THE SAME
_______ DESIGN BUT IT IS NOT ALLOWED TO MIX HARDWARES FROM CONFIGURATION 2 TO HARDWARE FROM CONFIGURATION 3.
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(a) Clean the fuel filter housing and cover (40) with dearomatized petroleum (Material No. CP5074). Make sure that the wave spring and retaining ring are correctly installed on the inner boss of the cover (40).
PRE SB CFM 73-0107
R (b) Install the new O-ring (10) and O-ring (30) in the related groove of the fuel filter (20) located at the both ends. Soak the new o-rings with engine fuel and lubricate slightly the new O-rings with vaseline (Material No. CP5070).
END OF PRE SB CFM 73-0107
POST SB CFM 73-0107
(c) Soak the new o-rings located at the both ends of the fuel filter
(20) with engine fuel and lubricate slightly the new O-rings with vaseline (Material No. CP5070).
NOTE : The O-rings are already installed, by the manufacturer, in
____ their groove, inside the new fuel filter element (20).
END OF SB CFM 73-0107
R (d) Install the new O-ring (90), in the related groove of the fuel filter cover (40), soak the new O-ring with engine fuel and lubricate it with vaseline (Material No. CP5070).
(e) Gently install fuel filter element (20) into the filter cover (40).
(f) Visually inspect through the cartridge if the packing O-ring (30) has not escaped from its groove and check if the filter element does not move.
(g) Carefully place filter cover (40) and the filter element cartridge (20) into the gear housing filter.
POST SB CFM 73-0107
NOTE : Adjust the tabs of the filter element cartridge (20) to
____ the ribs of the gear housing filter.
END OF SB CFM 73-0107
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(h) Before bolt installation, ensure that the cover is well seated against the housing flange.
(i) Lubricate the 6 head faces of the bolt (100) (in contact with the flat washer (110)), the 6 threads bolts and the 6 spherical sides of the self aligning nuts (120) with graphite grease (Material No. CP2101).
(j) Install the bolts.
CAUTION : REFER TO THE FIGURE 302 FOR THE CORRECT INSTALLATION.
_______ IMPROPER BOLTS, NUTS AND WASHERS INSTALLATION MAY LEAD TO DAMAGE HARDWARES. PAY SPECIAL ATTENTION TO THE SELF ALIGNING NUT AND WASHERS INSTALLATION.
CAUTION : DO NOT MIX CONFIGURATIONS 2 AND 3 HARDWARE ON THE SAME
_______
MAIN FUEL PUMP.
1 Install the 6 bolts (100), the 6 washers (110), the 6 self
_ aligning washers (130) and nuts (120). Refer to the figure 302 to respect the assembly configuration. (Ref. Fig. 302/TASK 73-11-10-991-309)
(k) Engage the bolts freely by hand (head bolt held and rotated by finger, no tool usage allowed) and rotate at least two complete turns (it should not be possible to fully hand tighten bolts).
(l) Torque the bolts.
CAUTION : TIGHTEN OF THE BOLTS NEED TO BE PERFORMED WITH
_______ APPROPRIATE TOOLS (PRESET TORQUE WRENCH). EXCESSIVE TORQUE MAY LEAD TO DAMAGE THE HARDWARE.
1 TORQUE the bolts to between 70 and 80 lbf.in (0.79 and 0.90
_
m.daN).
(m) Unscrew the 6 bolts and RE-TORQUE to between 70 and 80 lbf.in
(0.79 and 0.90 m.daN).
R (n) Install a new O-ring (80) , soak the new O-ring with engine fuel and lubricate it with vaseline (Material No. CP5070), on drain plug (70).
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(o) Install drain plug (70) lightly coated with engine fuel. TORQUE drain plug to between 45 and 55 lbf.in (0.50 and 0.62 m.daN). Safety with corrosion resistant steel lockwire 0.8 mm DIA (Material No. CP8001) or corrosion resistant steel lockwire 0.8 mm DIA (Material No. CP8002).
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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(28)
