Engine Dry-out and Re lubrication [CFMB]

TASK 72-00-00-100-007-A
Engine Dry-out and Re lubrication

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
It is recommended to do this procedure as soon as possible, in or less than 24 hours, after landing in the event of:

An In-Flight Shutdown (IFSD).
An engine was ferried.

You can ignore this procedure if the engine is to be operated in or less than 24 hours after landing. In this case, run the engine for a minimum of 15 to 20 minutes at ground idle power.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	HOSE - AIR, HOT
No specific	AR	HOT AIR SOURCE
No specific	AR	WARNING NOTICE(S)
856A2320	1	TOOL SET,DRYING AND RELUBRICATION-ENGINE SUMPS
856A2659	1	FILTER ADAPTER
856A2718	1	TOOL SET,R/I-DRIVE SHAFTS
856A2796	1	SAFETY PROTECTOR _ HANDCRANKING PAD
856A3810	1	ADAPTER, AIR - DRY OUT ENGINE SUMPS

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2442)	engine oil
(Material No.CP5067)	lubrication system corrosion preventive oil
(Material No.CP5075)	corrosion protective additive

C. Work Zones and Access Panels

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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 72-63-00-000-002-A	Removal of the Handcranking Drive Cover
TASK 72-63-00-400-002-A	Installation of the Handcranking Drive Cover
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
TASK 79-00-00-281-003-A	Check of FWD Sump, AFT Sump, AGB and TGB Scavenge Screens
Engine Sumps Relubrication Tool Setup
Dry Out Air Adapter Attachment to Rear End of Exhaust Plug
Engine Dry-out
Engine Relubrication

3. Job Set-up
Subtask 72-00-00-941-063-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 72-00-00-010-071-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

Subtask 72-00-00-160-052-A ** ON A/C NOT FOR ALL

C. Material Requirements:
(1) Hot air source characteristics:
(a) Output: 120-130 lb/min (54-59 kg/min)
(b) Temperature: 300-325 deg. F (150-163 deg. C)
(c) Supply pressure: 30-44 psi (207-303 kPa)
(2) Air filter characteristics:
(a) Filtration : 25 microns absolute
(b) Temperature: 300-325 deg. F (150-163 deg. C)
(c) Min. flow capacity: 2 lb/sec (0.9 kg/sec)
(d) Differential pressure: 10 psi (69 kPa)
(e) Working pressure: 70 psi (5 bar)
(f) Proof pressure: 105 psi (7 bar)
(3) Air circulation:
(a) The hot air flows through the exhaust nozzle, aft and forward sumps, TGB and AGB assemblies, engine flow path, and open scavenge circuits of the lubrication unit.

Subtask 72-00-00-020-051-A ** ON A/C NOT FOR ALL

D. Preparation before the job
(1) Remove the scavenge screen plugs.
(2) If the core engine can turn, remove the handcranking drive cover (Ref. AMM TASK 72-63-00-000-002).
(3) Fill the oil container of the 856A2320 TOOL SET,DRYING AND RELUBRICATION-ENGINE SUMPS (856A2320G02) as follows:
(a) When you use the lubrication system corrosion preventive oil (Material No.CP5067) , put 0.8 l (0.21 USgal) of oil in the container.
(b) When you use corrosion protective additive (Material No.CP5075) , mix a solution of 0.4 l (0.11 USgal) of product with an equal quantity of engine oil (Material No.CP2442) in the container.

4. Procedure
Subtask 72-00-00-480-051-A ** ON A/C NOT FOR ALL

A. Installation of the Dry Out and Relubrication Tools

WARNING: WEAR HEAVY PROTECTIVE GLOVES TO HANDLE THE HOT AIR HOSES, FILTER AND SOURCE WHEN THEY ARE HOT.

(1) Install the 856A2320 TOOL SET,DRYING AND RELUBRICATION-ENGINE SUMPS (856A2320G02) as follows:
(a) Install the sleeves (10) in the lubrication unit.
(b) Tighten the sleeves, and make the sleeves openings face together, as shown in

Engine Sumps Relubrication Tool Setup ** ON A/C NOT FOR ALL

(c) Lubricate the o-rings of the tool body and of the knurled knobs (20) with engine oil (Material No.CP2442) .
(d) Install the tool body and attach it to the sleeves (10) with the knurled knobs (20).
(e) Tighten the knurled knobs.
(2) Install the 856A3810 ADAPTER, AIR - DRY OUT ENGINE SUMPS (856A3810G01) as follows:
(a) Install the 856A3810 ADAPTER, AIR - DRY OUT ENGINE SUMPS (856A3810G01) in position on the exhaust nozzle end.
(b) Attach the jaws (70) to the exhaust nozzle end with bolts (90) and nuts (80).
(c) Tighten the nuts (80).
(d) Tighten the nuts (60).
(3) If the core engine can turn, install the 856A2796 SAFETY PROTECTOR _ HANDCRANKING PAD (856A2796G01) as follows:
(a) Put the 856A2796 SAFETY PROTECTOR _ HANDCRANKING PAD (856A2796G01) in position on the AGB.
(b) Tighten the bolts.
(c) Lubricate the seal of the 856A2796 SAFETY PROTECTOR _ HANDCRANKING PAD (856A2796G01) with engine oil (Material No.CP2442) .
(d) Engage the wrench, part of 856A2718 TOOL SET,R/I-DRIVE SHAFTS (856A2718G02/P04) in the handcranking drive, throught the 856A2796 SAFETY PROTECTOR _ HANDCRANKING PAD (856A2796G01).
(4) Connect the HOT AIR SOURCE and the 856A2659 FILTER ADAPTER (856A2659G01) to the 856A3810 ADAPTER, AIR - DRY OUT ENGINE SUMPS (856A3810G01).

Subtask 72-00-00-160-053-A ** ON A/C NOT FOR ALL

B. Dry-out of the engine

WARNING: STAY CLEAR OF THE LUBRICATION UNIT BY 20 FEET BECAUSE HOT AIR WILL BE BLOWN FROM THE TOOL SET-RELUBE ENG. SUMPS.

(1) Turn on the HOT AIR SOURCE.
(2) Increase the air temperature slowly and continuously 150 deg.C (302 deg.F) to 163 deg.C (325 deg.F) .
(3) Blowing:

WARNING: BE CAREFUL WHEN YOU TURN THE FAN ROTOR MANUALLY. USE HEAVY PROTECTIVE GLOVES AND MAKE SURE THAT YOU CANNOT SLIP. IF YOU DO NOT OBEY THESE INSTRUCTIONS, INJURY CAN OCCUR.

(a) Blow hot air into the engine for 20 minutes.
(4) During this period, turn the fan rotor 3-4 times by hand, and if possible, turn the core engine 3-4 times with the wrench, part of 856A2718 TOOL SET,R/I-DRIVE SHAFTS (856A2718G02/P18).
(5) Turn on the HOT AIR SOURCE off.
(6) Disconnect the HOSE - AIR, HOT from the 856A3810 ADAPTER, AIR - DRY OUT ENGINE SUMPS (856A3810G01) and connect it to the 856A2320 TOOL SET,DRYING AND RELUBRICATION-ENGINE SUMPS (856A2320G02).

Subtask 72-00-00-640-051-A ** ON A/C NOT FOR ALL

C. Relubrication of the engine

WARNING: STAY CLEAR FROM THE EXHAUST NOZZLE NOT TO BREATHE OIL MIST.

(1) Turn on the HOT AIR SOURCE.
(2) Increase the air temperature slowly and continuously 150 deg.C (320 deg.F) 163 deg.C (325 deg.F) .
(3) Open the oil supply valve (30).
(4) Turn the fan rotor and the core engine:

WARNING: BE CAREFUL WHEN YOU TURN THE FAN ROTOR MANUALLY. USE HEAVY PROTECTIVE GLOVES AND MAKE SURE THAT YOU CANNOT SLIP. IF YOU DO NOT OBEY THESE INSTRUCTIONS, INJURY CAN OCCUR.

(a) Turn the fan rotor and the core engine (if possible) approximately once every minute, until the oil container is empty (5-6 minutes).
(5) Turn the HOT AIR SOURCE off.
(6) Disconnect the HOSE - AIR, HOT from the 856A2320 TOOL SET,DRYING AND RELUBRICATION-ENGINE SUMPS (856A2320G02).
(7) Let the engine temperature decrease to the ambiant temperature.

Subtask 72-00-00-080-051-A ** ON A/C NOT FOR ALL

D. Removal of the tools
(1) Remove the 856A3810 ADAPTER, AIR - DRY OUT ENGINE SUMPS (856A3810G01) as follows.
(a) Loosen the nuts (60).
(b) Loosen the nuts (80).
(c) Disengage the 856A3810 ADAPTER, AIR - DRY OUT ENGINE SUMPS (856A3810G01) from the exhaust nozzle end.
(2) Remove the 856A2320 TOOL SET,DRYING AND RELUBRICATION-ENGINE SUMPS (856A2320G02) from the lubrication unit as follows:
(a) Make sure that the oil supply valve is closed.
(b) Disconnect the oil supply and air pressure supply lines from the oil container.
(c) Loosen the knurled knobs (20).
(d) Remove the tool body from the sleeves (10).
(e) Remove the sleeves (10) from the lubrication unit.
(3) If installed, remove the 856A2796 SAFETY PROTECTOR _ HANDCRANKING PAD (856A2796G01) as follows:
(a) Disengage the wrench, part of 856A2718 TOOL SET,R/I-DRIVE SHAFTS (856A2718G02/P04) from the 856A2796 SAFETY PROTECTOR _ HANDCRANKING PAD (856A2796G01).
(b) Remove the 856A2796 SAFETY PROTECTOR _ HANDCRANKING PAD (856A2796G01) from the AGB.

5. Close-up
Subtask 72-00-00-420-054-A ** ON A/C NOT FOR ALL

A. Procedure after the job
(1) If necessary, install the handcranking drive cover (Ref. AMM TASK 72-63-00-400-002).
(2) Make sure that the scavenge screens are clean and serviceable (Ref. AMM TASK 79-00-00-281-003).
(3) Install the scavenge screen plugs.

Subtask 72-00-00-410-071-A ** ON A/C NOT FOR ALL

B. 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
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:40:50 UTC