Installation of the Data Entry Plug [CFML]

TASK 73-21-50-400-802-A
Installation of the Data Entry Plug

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.

FIN: 4091KS

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	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 74.55 and 67.45 lbf.in (0.84 and 0.76 m.daN )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR

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 73-29-00-710-802-A	FADEC Test (Menu Mode)
TASK 73-29-00-740-809-A	Read the LRU Identification Report (Menu Mode)
Data Entry Plug

3. Job Set-up
Subtask 73-21-50-941-116-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) Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate:

The ENG/MODE selector switch, and
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) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).

Subtask 73-21-50-010-219-A

B. Get Access
(1) Make sure that the fan cowl doors are open (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) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

4. Procedure
Subtask 73-21-50-420-126-A

A. Installation of the Data Entry Plug (1)
(1) Remove all the COVER - PROTECTION and CAP - PROTECTION from all the openings, tubes, hoses and connectors.
(2) Connection of the lug (5) to the bracket (4):
(a) Make sure that the mating surfaces are clean and clear of unwanted materials.
(b) Install the bolt (3) to attach the lug (5) on the bracket (4) and tighten with your hand.
(c) TORQUE the bolt (3) to between 74.55 and 67.45 lbf.in (0.84 and 0.76 m.daN )

.
(3) Connection of the data entry plug (1):
(a) Make sure that the mating surfaces are clean and clear of unwanted materials.
(b) Connect the data entry plug (1) to the Pressure Sub-System (PSS) receptacle (2).
(c) Tighten the data entry plug (1) until you cannot see the color marks on the PSS receptacle (2).
(d) Make sure that the data entry plug (1) does not move after you fully engage it.

5. Close-up
Subtask 73-21-50-710-099-A

A. Tests
(1) Do the FADEC test (menu mode) (Ref. AMM TASK 73-29-00-710-802).
(2) Read the LRU identification (menu mode) (Ref. AMM TASK 73-29-00-740-809).

Subtask 73-21-50-410-168-A

B. 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 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:04:59 UTC