Installation of the Thrust Reverser Half Door Latches [CFMB]

TASK 78-36-41-400-043-A
Installation of the Thrust Reverser Half Door Latches

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 40 and 30 lbf.in (0.45 and 0.34 m.daN )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 462AR

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
05	COTTER PIN	AIPC 78-36-41-01-020

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
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
Thrust Reverser Half Door Latches

3. Job Set-up
Subtask 78-36-41-860-050-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, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).

Subtask 78-36-41-010-060-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the right thrust reverser door is open: (Ref. AMM TASK 78-36-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
452AR
(b) FOR [1000EM2] (ENGINE-2)
462AR

Subtask 78-36-41-040-056-A ** ON A/C NOT FOR ALL

C. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).

4. Procedure
Subtask 78-36-41-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Thrust Reverser Half Door Latches:
(1) Installation of the Forward Half Door Latches
(a) Put the latches (15) into position and install the bolt (20) and the nut (10).
(b) Tighten the nut (10) until the clearance between the half door and the nut is from 0.0019 in. (0.05 mm) to 0.009 in. (0.23 mm).
(c) Safety the nut (10) with a new AIPC 78-36-41-01-020 COTTER PIN (05).
(2) Installation of the Middle Half Door Latch
(a) Put the latch (25) into position and install the bolt (30) and the nut (10).
(b) Tighten the nut (10) until the clearance between the cowl structure and the nut is from 0.0019 in. (0.05 mm) to 0.009 in. (0.23 mm).
(c) Safety the nut (10) with a new AIPC 78-36-41-01-020 COTTER PIN (05).
(3) Installation of the Aft Half Door Latch
(a) Put the latch (25) into position and install the pin (40), the bracket (35) with the bolt (30).
(b) TORQUE the bolt (30) to between 40 and 30 lbf.in (0.45 and 0.34 m.daN )

5. Close-up
Subtask 78-36-41-410-050-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 right thrust reverser door (Ref. AMM TASK 78-36-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
452AR
(b) FOR [1000EM2] (ENGINE-2)
462AR

Subtask 78-36-41-440-050-A ** ON A/C NOT FOR ALL

B. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 78-36-41-410-051-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:26:28 UTC