W DOC AIRBUS | AMM A320F

Visual Inspection of the Turbine Center Frame (TCF) Accelerometer [CFML]

TASK 77-31-05-210-801-A
Visual Inspection of the Turbine Center Frame (TCF) Accelerometer

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.
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 1M(3 FT)
No specific
1
PLIERS - CONNECTOR, JAW, SOFT
No specific
AR
WARNING NOTICE(S)
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR, 451AL, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR, 461AL, 462AR
 C. Referenced Information
REFERENCE
DESIGNATION
TASK 71-13-00-010-803-A
Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A
Closing of the Fan Cowl Doors
TASK 77-31-05-000-801-A
Removal of the Turbine Center Frame Accelerometer
TASK 77-31-05-400-801-A
Installation of the Turbine Center Frame Accelerometer
TASK 78-30-00-040-809-A
Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-809-A
Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-806-A
Opening of the Thrust Reverser Cowl Doors
TASK 78-36-00-410-806-A
Closing of the Thrust Reverser Cowl Doors
F Turbine Center Frame (TCF) Accelerometer
3. Job Set-up
Subtask 77-31-05-941-052-A
A. Safety Precautions
   (1) On the center pedestal, on ENG panel 115VU:
     (a) Make sure that the ENG/MODE selector switch is in the NORM position.
     (b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
     (c) Put WARNING NOTICE(S) in position to tell persons not to operate:
  • The ENG/MODE selector switch
  • The ENG/MASTER 1(2) control switch.
   (2) On the ENG section of maintenance panel 50VU:
     (a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
     (b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 77-31-05-010-054-A
B. Get Access
   (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
   (2) Put an ACCESS PLATFORM 1M(3 FT) in position.
Subtask 77-31-05-040-052-A
C. Deactivation of the Thrust Reverser System for Maintenance
WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
   (1) Do the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-809).
Subtask 77-31-05-010-055-A
D. Get Access
   (1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-806):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR
4. Procedure
Subtask 77-31-05-210-050-A
A. Visual Inspection of the Turbine Center Frame (TCF) Accelerometer
   (1) Disconnect the HJ8A engine wiring harness (2) from the TCF accelerometer receptacle (3).
     (a) If necessary, use the PLIERS - CONNECTOR, JAW, SOFT.
   (2) Do the visual inspection of the TCF accelerometer (1) for the indications that follow:

Table 601 - Visual inspection of accelerometer housing (4)
INSPECT/CHECK
MAXIMUM SERVICEABLE LIMITS
REMARKS
1.Abrasion and wear
Serviceable if:
Maximum depth 0.01 in. (0.25 mm)
(x2 if the abrasion/wear is on the edge of the surface)
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
2.Dents
Serviceable if:
Maximum depth 0.004 in. (0.10 mm)
Maximum diameter 0.08 in. (2.03 mm)
(x2 if the abrasion/wear is on the edge of the surface)
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
3.Grooves
Serviceable if:
Maximum depth 0.006 in. (0.15 mm)
(x2 if the abrasion/wear is on the edge of the surface)
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
4.Scratches and nicks
Serviceable if:
Maximum depth 0.004 in. (0.10 mm)
(x2 if the abrasion/wear is on the edge of the surface)
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
5.Discoloration
A light discoloration is permitted
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
Table 602 - Visual inspection of connector threads (5)
INSPECT/CHECK
MAXIMUM SERVICEABLE LIMITS
REMARKS
1.Worn/missing thread
Serviceable if less than 20 percent of the thread length
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
Table 603 - Visual inspection of connector pins (6)
INSPECT/CHECK
MAXIMUM SERVICEABLE LIMITS
REMARKS
1.Scratches, nicks, dents, marks and discoloration
Not permitted
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
2.Missing pins
Not permitted
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
Table 604 - Visual inspection of cable assembly (rigid section) (7)
INSPECT/CHECK
MAXIMUM SERVICEABLE LIMITS
REMARKS
1.Abrasion and wear
Serviceable if:
Maximum depth 0.01 in. (0.25 mm)
(x2 if the abrasion/wear is on the edge of the surface)
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
2.Dents
Serviceable if:
Maximum depth 0.004 in. (0.10 mm)
Maximum diameter 0.08 in. (2.03 mm)
(x2 if the abrasion/wear is on the edge of the surface)
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
3.Grooves
Serviceable if:
Maximum depth 0.006 in. (0.15 mm)
(x2 if the abrasion/wear is on the edge of the surface)
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
4.Scratches and nicks
Serviceable if:
Maximum depth 0.004 in. (0.10 mm)
(x2 if the abrasion/wear is on the edge of the surface)
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
5.Discoloration
A light discoloration is permitted
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
Table 605 - Visual inspection of cable assembly (flexible section) (8)
INSPECT/CHECK
MAXIMUM SERVICEABLE LIMITS
REMARKS
1.Abrasion and wear
Serviceable if:
Maximum depth 0.004 in. (0.10 mm)
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
2.Dents
Serviceable if:
Maximum depth 0.01 in. (0.25 mm)
Maximum diameter 0.08 in. (2.03 mm)
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
3.Scratches and nicks
Serviceable if:
Maximum depth 0.01 in. (0.25 mm)
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
4.Loose wires
Two loose wires is permitted
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
5.Discoloration
A light discoloration is permitted
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
Table 606 - Visual inspection of nutplate (3)
INSPECT/CHECK
MAXIMUM SERVICEABLE LIMITS
REMARKS
1.Any deviation
Not permitted
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
Table 607 - Visual inspection of the accelerometer housing (part making and 2D datamatrix)
INSPECT/CHECK
MAXIMUM SERVICEABLE LIMITS
REMARKS
1.Scratches, nicks, dents, marks and discoloration
Serviceable if:
Part number, serial number and datamatrix are readable
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
Table 608 - Visual inspection of the rubber grommet (9)
INSPECT/CHECK
MAXIMUM SERVICEABLE LIMITS
REMARKS
1.Any deviation
Not permitted
Replace the TCF accelerometer (Ref. AMM TASK 77-31-05-000-801) and (Ref. AMM TASK 77-31-05-400-801).
   (3) Make sure that the connectors are clean and clear of unwanted materials.
   (4) Connect the HJ8A engine wiring harness (2) to the TCF accelerometer receptacle (3).
     (a) If necessary, use the PLIERS - CONNECTOR, JAW, SOFT.
5. Close-up
Subtask 77-31-05-410-054-A
A. Close Access
   (1) Make sure that the work area is clean and clear of tools and other items.
   (2) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-806):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
451AL 452AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
461AL 462AR
Subtask 77-31-05-440-052-A
B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-809).
Subtask 77-31-05-410-055-A
C. Close Access
   (1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
     (a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
     (b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
   (2) Remove the access platform(s).
   (3) Remove the WARNING NOTICE(S).
[Rev.10 from 2021] 2026.04.02 06:37:55 UTC
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