Reactivation of Thrust Reverser [CFMI]

TASK 78-30-00-440-040-A
Reactivation of Thrust Reverser

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.

ZONE: 210
ZONE: 400
FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
MMEL 78-30-01A
THRUST REVERSER
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 1M(3 FT)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 17 and 15 lbf.in (0.19 and 0.17 m.daN )
No specific	Torque wrench: range to between 40 and 30 lbf.in (0.45 and 0.34 m.daN )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
400	POWER PLANT, NACELLES AND PYLONS
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 78-31-00-710-040-A-01	Operational Test of the Thrust Reverser without CFDS - Engine not Running
TASK 78-31-00-710-040-A-02	Operational Test of the Thrust Reverser without CFDS - Engine Running
TASK 78-31-00-710-040-A	Operational Test of the Thrust Reverser System
TASK 78-31-00-710-040-A-01	Operational Test of the Thrust Reverser without CFDS - Engine not Running
TASK 78-31-00-710-040-A-02	Operational Test of the Thrust Reverser without CFDS - Engine Running
Lock-out Fairing and Storage Bracket
Lock-out Bolt and Lockplate
Hydraulic Control Unit Operating Control Lever (Operational/Inhibit Position)

3. Job Set-up
Subtask 78-30-00-941-063-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 78-30-00-010-068-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.

4. Procedure
Subtask 78-30-00-440-058-A ** ON A/C NOT FOR ALL

A. Reactivation of the thrust reverser

Lock-out Fairing and Storage Bracket ** ON A/C NOT FOR ALL

Lock-out Bolt and Lockplate ** ON A/C NOT FOR ALL

(1) Remove the screws (5) that attach the lockout fairings (6) to the storage bracket (4).

Lock-out Fairing and Storage Bracket ** ON A/C NOT FOR ALL

(2) Remove the bolts (3) that attach the lockplates (1) to the blocker door.

Lock-out Bolt and Lockplate ** ON A/C NOT FOR ALL

(3) Remove the lockout bolts (2) from the blocker doors.
(4) Install lockout bolts (2) in the storage bracket (4).

Lock-out Fairing and Storage Bracket ** ON A/C NOT FOR ALL

(5) Attach the lockplates (1) to the storage bracket (4) with the bolts (3).
(6) TORQUE bolt (3) to between 40 and 30 lbf.in (0.45 and 0.34 m.daN )

.
(7) Attach the lockout fairings (6) to the blocker doors with the screws (5).

Lock-out Fairing and Storage Bracket ** ON A/C NOT FOR ALL

(8) TORQUE screw (5) to between 17 and 15 lbf.in (0.19 and 0.17 m.daN )

.
(9) Make the Thrust Reverser Serviceable.

Hydraulic Control Unit Operating Control Lever (Operational/Inhibit Position) ** ON A/C NOT FOR ALL

(a) Remove the quick-release pin that holds the inhibit lever on the HCU in the OFF position (see sheet.2).
(b) Move the inhibit lever from the OFF position to the operational position (see sheet.1).
(c) Install the quick-release pin in its operational position.

5. Close-up
Subtask 78-30-00-410-068-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) Remove the access platform(s).
(3) 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
(4) Remove the WARNING NOTICE(S).

Subtask 78-30-00-710-056-A ** ON A/C NOT FOR ALL

B. Do an operational test:
(1) Do an operational test of the thrust reverser system (Ref. AMM TASK 78-31-00-710-040).

NOTE: As an alternative procedure you can do this operational test without the CFDS:

first method with engine not running (Ref. AMM TASK 78-31-00-710-040)
second method with engine running (Ref. AMM TASK 78-31-00-710-040).

[Rev.10 from 2021] 2026.04.01 03:20:18 UTC