(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
D. Preparation before the job
(1) Remove the scavenge screen plugs.
(2) If the core engine can turn, remove the handcranking drive cover (Ref. TASK 72-63-00-000-002).
(3) Fill the oil container of the TOOL SET, DRYING AND RELUBRICATION -ENGINE SUMPS (856A2320G02) as follows:
R (a) When you use the lube system corrosion preventive oil (Material R No. CP5067), put 0.8 l (0.21 USgal) of oil in the container.
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R (b) When you use corrosion preventive 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
_________ (Ref. Fig. 701/TASK 72-00-00-991-300, 702/TASK 72-00-00-991-301, 703/TASK 72-00-00-991-302, 704/TASK 72-00-00-991-303) Subtask 72-00-00-480-051
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 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 (Ref. Fig. 701/TASK 72-00-00-991-300)
(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.
R (2) Install the ADAPTER, AIR - DRY OUT ENGINE SUMPS (856A3810G01) as follows:
R (a) Install the 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).
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(3) If the core engine can turn, install the SAFETY PROTECTOR _ HANDCRANKING PAD (856A2796G01) as follows:
(a) Put the SAFETY PROTECTOR _ HANDCRANKING PAD (856A2796G01) in position on the AGB.
(b) Tighten the bolts.
(c) Lubricate the seal of the SAFETY PROTECTOR _ HANDCRANKING PAD (856A2796G01) with engine oil (Material No. CP2442).
R (d) Engage the wrench, part of TOOL SET, R/I - DRIVE SHAFTS (856A2718G02/P04) in the handcranking drive, throught the SAFETY PROTECTOR _ HANDCRANKING PAD (856A2796G01).
R (4) Connect the hot air source and the FILTER ADAPTER (856A2659G01) to the ADAPTER, AIR - DRY OUT ENGINE SUMPS (856A3810G01).
Subtask 72-00-00-160-053
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 : WEAR HEAVY PROTECTIVE GLOVES TO AVOID INJURY WHEN MANUALLY_______ TURNING THE FAN ROTOR.
(a) Blow hot air into the engine for 20 minutes.
R (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 TOOL SET, R/I - DRIVE SHAFTS (856A2718G02/P18).
(5) Turn on the hot air source off.
R R (6) Disconnect the hot air hose from the ADAPTER, AIR - DRY OUT ENGINE SUMPS (856A3810G01) and connect it to the TOOL SET, DRYING AND RELUBRICATION - ENGINE SUMPS (856A2320G02).
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