Installation of the Visual Indicator [CFMB]

TASK 79-21-30-400-001-A
Installation of the Visual Indicator

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
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 110 and 95 lbf.in (1.24 and 1.07 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2101)	graphite grease

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

D. Referenced Information

REFERENCE	DESIGNATION
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
Visual Indicator (PRE SB CFM 79-0014)
Visual Indicator (POST SB CFM 79-0014 or POST SB CFM 79-0023 or POST SB CFM 79-0036)

3. Job Set-up
Subtask 79-21-30-860-050-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:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 79-21-30-010-053-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 79-21-30-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Visual Indicator

PRE SB CFM 79-0014

Visual Indicator (PRE SB CFM 79-0014) ** ON A/C NOT FOR ALL

END OF PRE SB CFM 79-0014

POST SB CFM 79-0014 or POST SB CFM 79-0023 or POST SB CFM 79-0036

Visual Indicator (POST SB CFM 79-0014 or POST SB CFM 79-0023 or POST SB CFM 79-0036) ** ON A/C NOT FOR ALL

END OF POST SB CFM 79-0014 or POST SB CFM 79-0023 or POST SB CFM 79-0036

(1) Lubricate the threads of two bolts (40) with graphite grease (Material No.CP2101) .
(2) Attach the visual indicator (60) to the bracket (50) with two bolts (40) and two nuts (30).
(3) TORQUE the nuts (30) to between 110 and 95 lbf.in (1.24 and 1.07 m.daN )

.
(4) Remove the CAP - BLANKING and PLUG - BLANKING from the connectors and the receptacles.
(5) Connect the connectors (10) and (20) to the visual indicator (60).

5. Close-up
Subtask 79-21-30-410-051-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 WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:39:21 UTC