Removal of the Oil Tank [CFMB]

TASK 79-11-10-000-005-A
Removal of the Oil Tank

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

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	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 12-13-79-610-003-C	Oil Tank Draining
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 79-31-15-000-041-A	Removal of the Oil Quantity Transmitter
Oil Tank

3. Job Set-up
Subtask 79-11-10-941-058-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 79-11-10-010-059-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 79-11-10-020-055-A ** ON A/C NOT FOR ALL

A. Removal of the Oil Tank
(1) Drain the oil tank (Ref. AMM TASK 12-13-79-610-003).
(2) Remove the oil quantity transmitter (Ref. AMM TASK 79-31-15-000-041).
(3) Remove tubes and hoses from the oil tank (30) as follows:

CAUTION: INSTALL CAPS AND PLUGS ON THE ORIFICES OF ALL DISCONNECTED PIPES AND PARTS FOR THEIR PROTECTION AGAINST CONTAMINATION BY UNWANTED MATERIALS.

CAUTION: USE TWO WRENCHES TO REMOVE OR INSTALL THE TUBE COUPLING NUTS:

ONE WRENCH TO HOLD THE UNION, AND
ONE TO LOOSEN OR TIGHTEN THE COUPLING NUT.

THIS PREVENTS DAMAGE TO THE PARTS.

(a) Remove the 4 bolts (10) and disconnect the vent hose (120) from the oil tank (30). Remove and keep the gasket (110).
(b) Remove the 4 bolts (60) and disconnect the oil supply tube (50) from the oil tank (30). Remove and keep the gasket (40).
(c) Remove the 4 bolts (80) and disconnect the discharge hose (70) from the oil tank (30). Remove and keep the gasket (90).
(d) Disconnect the drain tube (20) coupling nut from the oil scupper nipple.
(e) Disconnect the hose (100) coupling nut from the tank nipple.
(4) Disconnect the bonding strip (180) from the flange E as follows:
(a) Remove the nut (210).
(b) Remove the bolt (190) and the spacer (200).
(5) Remove the oil tank (30) as follows:

CAUTION: SUPPORT THE OIL TANK DURING THE REMOVAL OF THE SHOULDER-HEADED PIN TO PREVENT DAMAGE TO THE OIL TANK.

(a) Remove the shoulder-headed pins (170) from the forward and aft lower mounts.
(b) Remove and discard the cotter pin (220).
(c) Remove the castellated nut (150) and the washer (140).
(d) Remove the shoulder-headed pin (130).
(e) Disengage the oil tank (30) from the lower mounts and remove it.
(f) Remove dampers (160) from the brackets attached to flanges D/E and G.

[Rev.10 from 2021] 2026.04.01 03:39:01 UTC