Removal of the Fuel Servos Drain Tubes [CFMI]

TASK 71-73-49-000-043-A
Removal of the Fuel Servos Drain Tubes

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	CONTAINER 1 L (1/4 USGAL)
No specific	AR	COVER - PROTECTION
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
Tubes - Oil, Hydraulic and Water Drain ** ON A/C NOT FOR ALL
Tubes - Oil, Hydraulic and Water Drain
Tubes - Oil, Hydraulic and Water Drain ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 71-73-49-941-074-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) 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.
(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(S) to tell persons not to energize the FADEC 1(2).

Subtask 71-73-49-010-091-A ** ON A/C NOT FOR ALL

B. Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 71-73-49-020-074-A ** ON A/C NOT FOR ALL

A. Removal of the Fuel Servos Drain-Tubes
(1) Put a CONTAINER 1 L (1/4 USGAL) below the drain mast to catch any fluid remaining in the tube.

PRE SB RA32071-13

(2) Disconnect the fuel servo drain tube (55) from the manifold module and allow the fluid to drain.

POST SB RA32071-13

(3) Disconnect the fuel servo drain tube (55) from the heat exchanger drain tube (75) and allow the fluid to drain.

END SB RA32071-13

(4) Disconnect the fireshield to servos drain tube (50) from the fuel servo drain tube (55).
(5) Disconnect the fuel servo drain tube (55) from the engine tube.
(6) Remove the clamp (5), the screw (10), the washer (15), the spacer (65), and the nut (20) that attach the tube (55) to the tube (70).
(7) Remove the fuel servo tube (55) from the engine.
(8) Disconnect the fireshield to servos drain tube (50) from the fitting on the fireshield.
(9) Remove the clamp (5), the screw (60), the washer (15), and the nut (20) that attach the tube (50) to the bracket on the engine fairlead.
(10) Remove the fireshield to servos drain tube (50) from the engine.
(11) Put COVER - PROTECTION on all the tubes and fittings.
(12) Remove the container from below the drain mast.

[Rev.10 from 2021] 2026.04.01 12:55:09 UTC