(2) Put the access platform in position.
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(Ref. Fig. 401/TASK 73-11-49-991-300) Subtask 73-11-49-020-050
A. Removal of the Fuel Tubes
(1) Cut and remove the lockwire from the insulation housing (50). Remove the housing from the fuel filter differential pressure switch.
(2) Disconnect the electrical connector 4000ELA from the pressure switch.
(3) Put a container below the fuel filter to catch the drained fuel.
(4) Disconnect the lower tubes (15) and (20) from the unions (40) in the fuel filter. Let the fuel drain into the container.
(5) Remove the nuts (35), the bolts (25), and the clamps (30) that attach the tubes to the brackets on the engine.
(6) Disconnect the tubes: CAUTION : USE A SECOND WRENCH TO APPLY COUNTER TORQUE TO THE TUBES
_______ WHEN YOU DISCONNECT THE LOWER TUBES FROM THE UPPER TUBES.
(a) Disconnect the lower tubes (15) and (20) from the upper tubes
(10) and (5). Remove the tubes from the engine.
(b) Disconnect the upper tubes (5) and (10) from the pressure switch. Remove the tubes from the engine.
(7) Put protective covers on the tube coupling nuts, the pressure switch, the fuel filter, and the electrical connector 4000ELA.
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Fuel Tubes
Figure 401/TASK 73-11-49-991-300- 12 (SHEET 1)
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Fuel Tubes
Figure 401/TASK 73-11-49-991-300- 22 (SHEET 2)
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TASK 73-11-49-400-041
Installation of the Fuel Tubes
1. Reason for the Job
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Self Explanatory
2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific warning notice
No specific access platform 1 m (3 ft. 3 in.)
R No specific Torque Wrench : range 5.00 to 35.00 lbf.in
R (0.05 to 0.40 m.daN) No specific Torque Wrench : range 36.00 to 220.00 lbf.in
(0.40 to 2.60 m.daN)
B. Consumable Materials
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REFERENCE DESIGNATION
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Material No. CP2442 *
engine oil (Ref. 70-30-00)
Material No. CP8001 *
lockwire 0.032 in. (0.8 mm) dia (Ref. 70-30-00)
Material No. CP8002 *
lockwire 0.032 in. (0.8 mm) dia (Ref. 70-30-00)
C. Expendable Parts
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FIG.ITEM |DESIGNATION |IPC-CSN
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45 packing 73-11-49 01A-020 45 packing 73-11-49 01A-020A
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D. Referenced Information
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REFERENCE DESIGNATION
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R 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
R from the External Power 71-00-00-710-001 Dry Motoring Check 71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors 73-11-49-991-300 Fig. 401
3. Job Set-up
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