(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a warning notice is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the access platform is in position.
(4) On the circuit breaker 1KC1(2), make sure that a warning notice is in position to tell the persons not to open it (them).
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Subtask 73-11-49-010-051
C. Make sure that the fan cowl doors are open (Ref. TASK 71-13-00-010-040): FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
4. Procedure
_________
(Ref. Fig. 401/TASK 73-11-49-991-300)
Subtask 73-11-49-420-050
A. Installation of the Fuel Tubes
(1) Install the fuel tubes.
(a) Remove the protective covers from the tube coupling nuts, the fuel filter, the pressure switch, and the electrical connector 4000ELA.
(b) Connect the upper tubes (5) to the high pressure port and (10) to the low pressure port in the pressure switch. Do not tighten the coupling nuts.
(c) Connect the lower tubes (15) and (20) to the upper tubes (10) and (5). Do not tighten the coupling nuts.
(d) Lubricate:
WARNING : ENGINE OIL IS A HAZARDOUS MATERIAL THAT CAN CAUSE
_______ INJURY OR ILLNESS IF NOT CORRECTLY USED. BEFORE YOU USE THIS PRODUCT, READ THE APPLICABLE MANUFACTURER'S "MATERIAL DATA SAFETY SHEET" AND OBEY THE SAFETY AND HEALTH PRECAUTIONS.
1 Lubricate the packings (45) with engine oil (Material No.
_
CP2442).
R (e) Install the packing (45) and the unions (40) in the fuel filter ports.
(f) TORQUE the unions (40) to between 150 and 160 lbf.in (1.69 and
1.80 m.daN).
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E E Aug 01/03 E E ECES ER (g) Connect the lower tubes (15) to the low pressure port and (20) to R the high pressure port in the fuel filter. Do not tighten the R coupling nuts.
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(h) Loosely attach the tubes to the brackets with the clamps (30), the bolts (25), and the nuts (35).
(i) Loosely attach the tubes together with the clamps (30), the bolts (25), and the nuts (35).
(j) Make sure that the tubes are aligned correctly.
(k) TORQUE the upper tubes (5) and (10) coupling nuts to between 150 and 160 lbf.in (1.69 and 1.80 m.daN).
(l) TORQUE the lower tubes (15) and (20) coupling nuts to between 150 and 160 lbf.in (1.69 and 1.80 m.daN).
(m) Torque the coupling nuts:
CAUTION : USE A SECOND WRENCH TO APPLY COUNTER TORQUE TO THE
_______ TUBES WHEN YOU CONNECT THE LOWER TUBES TO THE UPPER TUBES.
1 TORQUE the coupling nuts that connect the lower tubes (15) and
_ (20) to the upper tubes (10) and (5) to between 150 and 160 lbf.in (1.69 and 1.80 m.daN).
(n) TORQUE the nuts (35) to between 20 and 25 lbf.in (0.22 and 0.28 m.daN).
(o) Connect the electrical connector 4000ELA to the pressure switch. Tighten the connector by hand plus one-eighth turn.
(2) Install the insulation housing as follows:
(a) Install the insulation housing (50) on the pressure switch.
(b) Put a loop of lockwire 0.032 in. (0.8 mm) dia (Material No. CP8001) or lockwire 0.032 in. (0.8 mm) dia (Material No. CP8002) around the capstan. Twist the lockwire around the insulation housing (50) and attach it to the capstan on the opposite side.
NOTE : Do not tighten the lockwire more than necessary to hold
____ the insulation housing in position on the pressure switch.
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Subtask 73-11-49-942-050
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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(72)
