W DOC AIRBUS | AMM A320F

Installation of the Air Intake Cowl [CFMB]

TASK 71-11-00-400-041-A
Installation of the Air Intake Cowl

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING: BE CAREFUL DURING THE REMOVAL/INSTALLATION OF THE AIR INTAKE COWL. IT WEIGHS 310 Lb (140.6 kg). IF IT FALLS, IT CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.
CAUTION: ADJUST THE FAN COWL DOORS WHEN A NEW AIR INTAKE COWL IS INSTALLED. IF THE FAN COWL DOORS ARE NOT CORRECTLY ADJUSTED THE DOORS CAN OPEN IN FLIGHT.
CAUTION: THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.
ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL
1. Reason for the Job
NOTE: Engine and Nacelle are 2 ways interchangeable but with condition.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
ACCESS PLATFORM 1M(3 FT)
No specific
AR
PAD - UNIVERSAL ATTACH
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 70 and 60 lbf.in (0.79 and 0.68 m.daN ) T
No specific
Torque wrench: range to between 360 and 340 lbf.in (4.07 and 3.84 m.daN ) T
RSE1112
1
SLING INLET COWL
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.CP1039)
acetone
(Material No.CP1041)
isopropyl alcohol
(Material No.CP2011)
stoddard solvent
(Material No.CP2306)
tape
(Material No.CP2559)
ardrox 552
(Material No.CP2560)
turco ind 79
(Material No.CP2566)
mag-chem teksol
(Material No.CP2584)
degreasol 99 R
(Material No.CP2656)
mag-chem skysol
 C. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
400
POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR
 D. Referenced Information
REFERENCE
DESIGNATION
TASK 30-21-51-400-042-A
Installation of the Engine Air-Intake Anti-ice Valve
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 71-13-00-800-041-A
Adjustment of the Fan Cowl Doors
SPM 702112
F Air Intake Cowl
F Torque Sequence Chart
3. Job Set-up
Subtask 71-11-00-860-050-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
   (1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
   (2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
   (3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.
Subtask 71-11-00-010-059-A ** ON A/C NOT FOR ALL
B. Make sure that the fan cowl doors are open (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 71-11-00-110-051-A ** ON A/C NOT FOR ALL
A. Clean the Temporary Protective Colored Coating from the Nose Lip.
NOTE: Do this procedure before you install a new or spare inlet cowl.
   (1) Use 2 in. (50.8mm) wide max. tape (Material No.CP2306) around the circumferences of the leading edges of the inner and outer barrel panels to prevent solvent from discoloring panels.
   (2) Prior to installation of the inlet cowl, clean the temporary protective coating off of the nose lip. Use a clean cotton cloth, made moist with acetone (Material No.CP1039) or isopropyl alcohol (Material No.CP1041) or stoddard solvent (Material No.CP2011) or ardrox 552 (Material No.CP2559) or turco ind 79 (Material No.CP2560) or mag-chem teksol (Material No.CP2566) or degreasol 99 R (Material No.CP2584) or mag-chem skysol (Material No.CP2656) SPM 702112
   (3) Wipe off unwanted acetone before it dries.
   (4) Make sure that all of the protective coating has been removed. If not, do again this procedure until the coating is gone.
Subtask 71-11-00-020-057-A ** ON A/C NOT FOR ALL
B. Remove filler plugs from the hoist points on the air intake cowl.
Subtask 71-11-00-480-055-A ** ON A/C NOT FOR ALL
C. Installation of the Tooling
   (1) Install the PAD - UNIVERSAL ATTACH (20) in the hoist points of the air intake cowl (25).
   (2) Attach the RSE1112 SLING INLET COWL (15) to the universal attach pads (20).
   (3) Lift the sling until it supports the air intake cowl (25).
Subtask 71-11-00-020-058-A ** ON A/C NOT FOR ALL
D. Disengagement of the Air Intake Cowl
   (1) Remove the bolts (50), the washers (5) and (55), spacers (60), and the nuts (10), that attach the air intake cowl (25) to the dolly.
NOTE: Remove the top bolt and work down equally on each side when you remove the bolts.
   (2) Pull the air intake cowl (25) forward to disengage the index pin from the rotating ring on the dolly.
Subtask 71-11-00-420-050-A ** ON A/C NOT FOR ALL
E. Installation of the Air Intake Cowl
   (1) Lift the air intake cowl (25) until the attach ring is aligned with the engine and engage the index pin with the engine flange.
   (2) Attach the air intake cowl (25) to the engine flange with the bolts (50), the washers (5) and (55), the spacers (60) and the nuts (10) in 36 places:
     (a) Install the bolts (50) thru the engine flange with the bolt head facing aft.
     (b) Make sure that the countersunk side of the washers (55) is against the bolt (50) head.
   (3) Torque the nuts (10) as follows:
     (a) TORQUE the nuts (10) to between 360 and 340 lbf.in (4.07 and 3.84 m.daN ) T.
Start with the nuts (10) at the 9 o'clock and 3 o'clock positions, then torque the nuts (10) in the sequence as shown in the figure:
F Torque Sequence Chart ** ON A/C NOT FOR ALL
     (b) TORQUE the nuts (10) again in the same sequence.
Subtask 71-11-00-080-053-A ** ON A/C NOT FOR ALL
F. Remove the sling (15) and the universal attach pads (20) from the air intake cowl (25).
Subtask 71-11-00-420-057-A ** ON A/C NOT FOR ALL
G. Installation of the Hardware
   (1) Install the insert bolt(s) in the inlet cowl hoist point(s).
   (2) TORQUE the insert bolt(s) to between 70 and 60 lbf.in (0.79 and 0.68 m.daN ) T.
   (3) Remove the protective covers from the ECU, the ECU cooling duct, the swirl nozzle duct assembly, and the electrical connector.
   (4) Install the preformed hose (35) and the clamps (30) on the ECU and the ECU cooling duct.
   (5) Install anti-ice valve (40) (Ref. AMM TASK 30-21-51-400-042).
   (6) Connect the electrical connector (4001VC-A) (45) for the interphone jack to the receptacle on the fan case. Tighten the connector with your hand.
5. Close-up
Subtask 71-11-00-410-051-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 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
   (3) Remove the access platform(s).
   (4) Remove the WARNING NOTICE(S).
Subtask 71-11-00-820-051-A ** ON A/C NOT FOR ALL
B. Do the adjustment of the fan cowl doors (Ref. AMM TASK 71-13-00-800-041).
[Rev.10 from 2021] 2026.04.02 06:32:14 UTC
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