(3) Remove the access platform(s).

 (4) Remove the warning notice(s).

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 SERVO FUEL HEATER - SERVICING

_____________________________
 TASK 73-11-20-620-002
 Preservation of the Servo fuel Heater
 1. Reason for the Job

__________________
 Self Explanatory

 2. Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE  QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific  blanking plugs
 B. Consumable Materials
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
Material No.  CP2442 *
 engine oil (Ref. 70-30-00)

 3. Job Set-up
__________
 Subtask 73-11-20-869-052

 A. Not Applicable
 4. Procedure
_________
 Subtask 73-11-20-640-050

 A. Preservation of the Servo Fuel Heater :
 (1) Fill engine oil (Material No. CP2442) in fuel and oil circuits of servo fuel heater.

 (2) Install blanking plugs on servo fuel heater.

 (3) Shake the unit for one minute approximately.

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 E E Feb 01/98 E E ECES E F 『 E C F M E E E E 56-5B E E E (4) Remove the blanking plugs. Drain excess oil. Reinstall blanking plugs.

 (5) Install blanking plugs on the ends of the removed tubes.
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 SERVO FUEL HEATER - REMOVAL/INSTALLATION
________________________________________ TASK 73-11-20-000-002 Removal of the Servo Fuel Heater
 1. Reason for the Job

__________________
 Self Explanatory

 2. Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking plugs No specific container capacity 0.25 US gal (1l) No specific protective covers No specific warning notice
 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
71-13-00-010-040 Opening of the Fan Cowl Doors 73-11-20-620-002 Preservation of the Servo fuel Heater 73-11-20-991-300 Fig. 401
 3. Job Set-up
__________ Subtask 73-11-20-941-052
 A. Safety Precautions
 (1) On the center pedestal, on the ENG panel 115VU:

 (a) Put a warning notice to tell persons not to start the engine.

 (2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.

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 (3) On the overhead maintenance panel 50VU:

 (a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.

 (b) Put a warning notice to tell persons not to energize the FADEC 1(2).

 Subtask 73-11-20-010-053
 B. Open the fan cowl doors: (Ref. TASK 71-13-00-010-040)
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 (1) Place a container capacity 0.25 US gal (1l) below the servo fuel heater.
 4. Procedure
_________ (Ref. Fig. 401/TASK 73-11-20-991-300) Subtask 73-11-20-020-051
 A. Removal of the Servo Fuel Heater
 (1) Disconnect the fuel pump HP tube (250) from the FUEL IN tube (260).

 (2) Disconnect the FUEL IN tube (260) from:

 (a) The FUEL IN nipple (10) of servo fuel heater (80).

 (b) The fuel pump, and remove FUEL IN tube (260).

 (3) Remove the OIL IN tube (240) as follows:
　
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