Installation of the Safety Sleeve on Blocker Door Actuator [CFMB]

TASK 78-32-41-480-001-A
Installation of the Safety Sleeve on Blocker Door Actuator

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	ACCESS PLATFORM 1M(3 FT)
No specific	AR	WARNING NOTICE(S)
HIX3005	1	SAFETY SLEEVE - PIVOTING DOOR ACTUATOR

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-32-41-860-001-A	Manual Deployment of the Blocker Door
Safety Sleeve Installation

3. Job Set-up
Subtask 78-32-41-941-059-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 78-32-41-010-059-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.

Subtask 78-32-41-040-059-A ** ON A/C NOT FOR ALL

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

Subtask 78-32-41-010-060-A ** ON A/C NOT FOR ALL

D. Deploy the blocker door manually (Ref. AMM TASK 78-32-41-860-001).

4. Procedure
Subtask 78-32-41-480-050-A ** ON A/C NOT FOR ALL

A. Install the HIX3005 SAFETY SLEEVE - PIVOTING DOOR ACTUATOR on the hydraulic actuator as follows:
(1) Loosen the two knurled screws on the sleeve fully.
(2) Move the half-sleeves apart.
(3) Put the half-sleeves on the hydraulic actuator rod.
(4) Tighten the two knurled screws until sleeve is firmly in place on the actuator.

[Rev.10 from 2021] 2026.04.01 13:11:39 UTC