Air Flow Check of the Aft Sump Oil Supply Circuit [CFMB]

TASK 72-00-00-820-006-A
Air Flow Check of the Aft Sump Oil Supply Circuit

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	AR	CONTAINER 3 L(3/4 USGAL)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )
No specific	Torque wrench: range to between 275 and 225 lbf.in (3.11 and 2.54 m.daN )
No specific	Torque wrench: range to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )
856A3267	1	ADAPTER, TEST RIG - AIR FLOW CHECK

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2101)	graphite grease

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-13-79-610-002-A	Check oil level and replenish Check Pop Out Indicator of EMCD (Electrical Master Chip Detector)
TASK 12-13-79-610-002-A-01	Check oil level and replenish (Pressure Filling)
TASK 71-00-00-710-006-B	Minimum Idle Check
TASK 71-00-00-820-002-A	Oil Circuit Air Flow Check
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
Air Flow Check of the Aft Sump Oil Supply Circuit

3. Job Set-up
Subtask 72-00-00-941-108-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 72-00-00-010-150-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(2) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(3) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(4) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.

Subtask 72-00-00-040-082-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 72-00-00-010-151-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

4. Procedure
Subtask 72-00-00-820-051-A ** ON A/C NOT FOR ALL

A. Aft Sump Air Flow Check

WARNING: USE PROTECTIVE GLOVES AND BE CAREFUL WITH OIL SPLASHES WHEN YOU DISCONNECT OIL TUBES. HOT OIL CAN CAUSE DEEP BURNS.

(1) Put a CONTAINER 3 L(3/4 USGAL) under the junctions of the oil supply tube (20).
(2) Remove nuts (60) and (180), bolts (70) and (160) which attach clamps (80) and (170) to the oil supply tube (20).
(3) Remove clamps (80), (170) and shields (90) and (190).
(4) Remove the aft sump oil supply tube as follows:

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 bolt (130) which attaches the clamps (120) and (140) to the bracket (150) on flange T.
(b) Remove the nut (50) and the bolt (30) which attaches the clamps (40) and (110) to the bracket (100) on flange S.
(c) Disconnect the oil supply tube (20) from the oil supply tube (10) and from the aft sump oil supply tube (30).
(d) Remove oil supply tube (20).
(5) Install a fitting reducer 0.750-16 and 0.5625-18 THD (19 and 14.3 mm) to the end of the aft sump oil supply tube (30).
(6) Connect the test rig equipped with 856A3267 ADAPTER, TEST RIG - AIR FLOW CHECK (856A3267G02), to the fitting reducer.
(7) TORQUE the union nuts to between to between 275 and 225 lbf.in (3.11 and 2.54 m.daN )

.
(8) Do the check of the aft sump oil supply circuit (Ref. AMM TASK 71-00-00-820-002).
(9) If the measured flow rate is not within the limits, do the cleaning of the oil inlet cover, and do the cleaning of the aft sump oil supply tube.
(10) Disconnect the test rig from the fitting reducer.
(11) Remove the fitting reducer from the aft sump oil supply tube (30).
(12) Install the aft sump oil supply tube (20) as follows:

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) Connect the oil supply tube (20) to the oil supply tube (10) and to the aft sump oil supply tube (30).
(b) Tighten the coupling nuts by hand.
(c) Install clamps (120) and (170) on the oil supply tube (20).
(d) Lubricate threads of bolt (30) and (130) with graphite grease (Material No.CP2101) .
(e) Attach clamps (120) and (140) to the bracket (150) on flange T, with bolt (130).
(f) Attach clamps (40) and (110) to the bracket (100) on flange S, with bolt (30) and nut (50).
(g) Make sure that the oil tube (20) is not strained.
(h) TORQUE the bolt (30) and (130) to to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )

.
(i) TORQUE the coupling nuts of tubes (20) and (30) to to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )

.
(j) Lubricate threads of bolt (70) and (160) with graphite grease (Material No.CP2101) .
(k) Install shields (90) and (190) on couplings of the oil tube (20), with clamps (80) and (170), bolts (70) and (160), and nuts (60) and (180).

NOTE: The nut (180) must be installed on the turbine frame side.

(l) TORQUE the nuts (60) and (180) to to between 50 and 45 lbf.in (0.57 and 0.51 m.daN )

5. Close-up
Subtask 72-00-00-410-149-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors (Ref. AMM TASK 78-36-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 72-00-00-710-061-A ** ON A/C NOT FOR ALL

B. Do an idle check (Ref. AMM TASK 71-00-00-710-006) and check for leaks.

Subtask 72-00-00-610-055-A ** ON A/C NOT FOR ALL

C. Do a check of the oil level (Ref. AMM TASK 12-13-79-610-002).

Subtask 72-00-00-440-082-A ** ON A/C NOT FOR ALL

D. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 72-00-00-410-150-A ** ON A/C NOT FOR ALL

E. Close-up
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 02:40:27 UTC