Installation of the Seal and V-Band at the Nacelle Inlet Aft Bulk Interface

TASK 30-21-49-400-809-A
Installation of the Seal and V-Band at the Nacelle Inlet Aft Bulk Interface

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.

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	MALLET - PLASTIC
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 1.43 and 1.23 m.daN (126.55 and 108.85 lbf.in )
No specific	Torque wrench: range to between 1.40 and 1.30 m.daN (123.89 and 115.04 lbf.in )
No specific	Torque wrench: range to between 3.48 and 2.96 m.daN (25.66 and 21.83 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CPNCL00062)	LUBRICATING OIL TURBINE ENGINE SYNT BASE

C. 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

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
6	COUPLING BANDS	EIPC 30-00-00-00-000

E. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-790-810-A	Pneumatic Leak Test of the Engine EBU Air Ducts
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
Seal and V-Band at Nacelle Inlet Aft Bulk Interface

3. Job Set-up
Subtask 30-21-49-941-111-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) are 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 30-21-49-865-112-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
122VU	ANTI ICE/ENG/1	1DN1	X10
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
122VU	ANTI ICE/ENG/2	1DN2	W10

Subtask 30-21-49-010-153-A

C. 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

4. Procedure
Subtask 30-21-49-420-096-A

A. Installation of the Seal and V-Band at Nacelle Inlet Aft Bulk Interface.
(1) Remove all COVER - PROTECTION and CAP - PROTECTION from openings, tubes, hoses, and connectors.
(2) Lubricate the threads of the two bolts (9) with LUBRICATING OIL TURBINE ENGINE SYNT BASE (Material No.CPNCL00062) .
(3) Install the anti-ice duct section (7) as follows:
(a) Install the E-seal (2) in the inlet (5).
(b) Put the anti-ice duct section (7) in position against the inlet (5) connection.
(c) Install the two bolts (9) to attach the bracket on the anti-ice duct section (7) to the support bracket (8).
(d) TORQUE the two bolts (9) to between 1.43 and 1.23 m.daN (126.55 and 108.85 lbf.in )

.
(e) Install the V-band clamp (3) to connect the anti-ice duct section (7) to the inlet (5) connector as follows:
1 Loosely assemble the V-band clamp (3) around the flanges of the anti-ice duct section (7) and the inlet (5).
2 TORQUE the nut on the V-band clamp (3) to between 1.40 and 1.30 m.daN (123.89 and 115.04 lbf.in )

.
3 Light tap around the outer diameter of the V-band clamp (3) with a MALLET - PLASTIC. Do not hit the latch mechanism on the V-band clamp.
4 TORQUE the nut on the V-band clamp (3) to between 1.40 and 1.30 m.daN (123.89 and 115.04 lbf.in )

again.
(f) Install the insulation boot (4) on the inlet (5) and the anti-ice duct section (7).
(g) Install the two new EIPC 30-00-00-00-000 COUPLING BANDS (6) to attach the insulation boot (4) to the inlet (5) and the anti-ice duct section (7).
(h) Put the indicating tube (1) in position on the anti-ice duct section (7).
(i) Connect the coupling nut on the indicating tube (1) to the anti-ice duct section.
(j) TORQUE the coupling nut that connects the indicating tube (1) to the anti-ice duct section (7) to between 3.48 and 2.96 m.daN (25.66 and 21.83 lbf.ft )

Subtask 30-21-49-710-061-A

B. Test
(1) Do the pneumatic leak test of the engine EBU air ducts (Ref. AMM TASK 71-00-00-790-810).

5. Close-up
Subtask 30-21-49-410-124-A

A. 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 WARNING NOTICE(S).

Subtask 30-21-49-865-113-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
122VU	ANTI ICE/ENG/1	1DN1	X10
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
122VU	ANTI ICE/ENG/2	1DN2	W10

[Rev.10 from 2021] 2026.04.01 00:29:53 UTC