W DOC AIRBUS | AMM A320F

Inspect Magnetic Chip Detector Probes and Housings for Wear [IAE]

TASK 79-22-45-200-001-A
Inspect Magnetic Chip Detector Probes and Housings for Wear

WARNING: DO NOT LET ENGINE OIL STAY ON YOUR SKIN FOR A LONG TIME. FLUSH THE OIL FROM YOUR SKIN WITH WATER. THE OIL IS POISONOUS AND CAN GO THROUGH YOUR SKIN AND INTO YOUR BODY.
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.
CAUTION: DO NOT LET ENGINE FUEL OR OIL FALL ON THE ENGINE. UNWANTED FUEL OR OIL MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FUEL OR OIL CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.
ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL
1. Reason for the Job
Refer to the MPD TASK: 792000-I4
INSPECT MAGNETIC CHIP DETECTOR PROBES AND HOUSINGS FOR WEAR
This task gives the data to check the magnetic chip detector probe pins and housing for wear. This task is not necessary for magnetic chip detectors that are Post SBE 79-0042.
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
WARNING NOTICE(S)
No specific
Torque wrench: range to between 180 and 160 lbf.in (2.03 and 1.81 m.daN ) T
IAE1R19313
1
GAUGE - BAYONET SLOT WEAR
T71884
1
GAUGE - BAYONET SLOT WEAR
 B. Consumable Materials
REFERENCE
DESIGNATION
(Material No.V02-126)
lockwire
(Material No.V10-077)
lubricant (engine oil)
 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. Expendable Parts
FIG.ITEM
DESIGNATION
IPC-CSN
5
PLUG
AIPC 79-22-45-80-010
6
SEAL RING
AIPC 79-22-45-80-040
4
SEAL
AIPC 79-22-45-80-050
 E. Referenced Information
REFERENCE
DESIGNATION
TASK 12-13-79-610-011-A
Check Oil Level and Replenish
TASK 70-23-11-911-013-A
General Torque Tightening Techniques
TASK 70-23-13-911-010-A
Procedures for the Installation of Preformed Packings
TASK 71-13-00-010-010-A
Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A
Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 79-22-45-000-010-A
Removal of the Magnetic Chip Detector
TASK 79-22-45-000-011-A
Removal of the Magnetic Chip Detector Housing
TASK 79-22-45-400-010-A
Installation of the Magnetic Chip Detector
TASK 79-22-45-400-011-A
Installation of the Magnetic Chip Detector Housing
F Magnetic Chip Detectors
F Bayonet Wear Tests
3. Job Set-up
Subtask 79-22-45-941-052-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 79-22-45-010-052-A ** ON A/C NOT FOR ALL
B. Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
   (1) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
   (2) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.
4. Procedure
Subtask 79-22-45-020-052-A ** ON A/C NOT FOR ALL
A. Remove the master MCD (Ref. AMM TASK 79-22-45-000-010).
Subtask 79-22-45-220-050-A ** ON A/C NOT FOR ALL
B. Examine the MCD probe (1) at the master chip detector position.
F Magnetic Chip Detectors ** ON A/C NOT FOR ALL
   (1) Measure the diameter of the bayonet pins (3) along the length of the pins:
     (a) If the diameter of the pins is not less than 0.077 in. (2 mm), accept the probe.
     (b) If the diameter of the pins is less than 0.077 in. (2 mm), reject the probe.
   (2) Examine the pins:
     (a) If the pins are bent or loose, reject the probe.
     (b) If the pins are broken, reject the probe.
Subtask 79-22-45-210-051-A ** ON A/C NOT FOR ALL
C. Examine the MCD housing (2) at the master chip detector position.
F Magnetic Chip Detectors ** ON A/C NOT FOR ALL
F Bayonet Wear Tests ** ON A/C NOT FOR ALL
   (1) Examine the slots in the housing (2). Use the T71884 GAUGE - BAYONET SLOT WEAR or IAE1R19313 GAUGE - BAYONET SLOT WEAR
     (a) If you cannot see any of the three slots in the inner diameter of the housing when the gauge is in place, accept the housing.
     (b) If you can see one or more of the slots, replace the housing (Ref. AMM TASK 79-22-45-000-011) and (Ref. AMM TASK 79-22-45-400-011).
Subtask 79-22-45-220-051-A ** ON A/C NOT FOR ALL
D. Examine the remaining MCD probes (1).
F Magnetic Chip Detectors ** ON A/C NOT FOR ALL
   (1) Remove the probes (1) from the housings (2) at the remaining 6 off positions 2 thru 7 (Ref. AMM TASK 79-22-45-000-010).
   (2) Do again the same procedure for the remaining 6 off probes.
Subtask 79-22-45-210-052-A ** ON A/C NOT FOR ALL
E. Examine the remaining MCD housings (2).
F Magnetic Chip Detectors ** ON A/C NOT FOR ALL
   (1) Do again the same procedure for the remaining 6 off MCD housings at positions 2 thru 7.
Subtask 79-22-45-420-052-A ** ON A/C NOT FOR ALL
F. Install plug (5) at MCD housing (2) position.
F Magnetic Chip Detectors ** ON A/C NOT FOR ALL
   (1) If, after you have inspected the MCD probes and housings, there are no replacement parts available, proceed as follows:
NOTE: Plugs may be installed at up to five positions. MCD's must be installed at the No. 5 bearing (position 3) and the master MCD (position 1). Use a serviceable probe or housing from another position at the No. 5 bearing and master MCD if there are not sufficient replacement probes and housings. Replace all plugs and seals when serviceable probes and housings become available.
   (2) Remove the MCD housing (2) (Ref. AMM TASK 79-22-45-000-011).
   (3) Install new AIPC 79-22-45-80-050 SEAL (4) on AIPC 79-22-45-80-010 PLUG (5) (Ref. AMM TASK 70-23-13-911-010).
F Magnetic Chip Detectors ** ON A/C NOT FOR ALL
   (4) Lubricate the seal ring on the plug with V10-077lubricant (engine oil).
   (5) Install the plug.
     (a) Install the plug (5) where the MCD housing (2) was removed.
     (b) TORQUE the plug to between 180 and 160 lbf.in (2.03 and 1.81 m.daN ) T (Ref. AMM TASK 70-23-11-911-013).
     (c) Safety the plug with lockwire (Material No.V02-126) .
F Magnetic Chip Detectors ** ON A/C NOT FOR ALL
Subtask 79-22-45-420-067-A ** ON A/C NOT FOR ALL
G. Install the Seal Rings (6)
F Magnetic Chip Detectors ** ON A/C NOT FOR ALL
   (1) Install the new AIPC 79-22-45-80-040 SEAL RING (6) on the MCD (Ref. AMM TASK 79-22-45-400-010).
Subtask 79-22-45-420-053-A ** ON A/C NOT FOR ALL
H. Install the master MCD.
(Ref. AMM TASK 79-22-45-400-010).
F Magnetic Chip Detectors ** ON A/C NOT FOR ALL
Subtask 79-22-45-420-054-A ** ON A/C NOT FOR ALL
I. Install the remaining MCD probes (1).
F Magnetic Chip Detectors ** ON A/C NOT FOR ALL
   (1) Do again the same procedure for the remaining 6 off MCD probes at positions 2 thru 7.
Subtask 79-22-45-612-051-A ** ON A/C NOT FOR ALL
J. Make sure there is sufficient oil in the oil system. Add oil if necessary (Ref. AMM TASK 12-13-79-610-011).
5. Close-up
Subtask 79-22-45-410-052-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 cowls (Ref. AMM TASK 71-13-00-410-010):
     (a) FOR [1000EM1] (ENGINE-1)
437AL, 438AR
     (b) FOR [1000EM2] (ENGINE-2)
447AL, 448AR.
   (3) Remove the WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.02 06:39:55 UTC
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