General Visual Inspection of Actuator Rod End Attachments (Blocker Doors Deployed) [CFMB]

TASK 78-31-41-210-803-B
General Visual Inspection of Actuator Rod End Attachments (Blocker Doors Deployed)

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.

ZONE: 400

1. Reason for the Job
Refer to the MPD TASK: 783100-C8
GENERAL VISUAL INSPECTION OF ACTUATOR ROD END ATTACHMENTS (BLOCKER DOORS DEPLOYED)
This task is available only for A/C equipped with actuator fitting assembly P/N 321-322-901-0 which contains fitting P/N 321-313-501-6. For further information, please refer to Airbus SB 78-1032/VSBRA32078-127.

NOTE: P/N 321-322-901-0 is the P/N of the fitting assembly itself. P/N 321-313-501-6 is the P/N of the fitting.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

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

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP1041)	isopropyl alcohol
(Material No.CP2212)	hydraulic fluid NSA-307-110 type 4
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
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
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 78-31-41-000-001-A	Removal of the Blocker Door Hydraulic Actuator
TASK 78-31-41-000-803-A	Removal of the Blocker Door Hydraulic Actuator Clevis
TASK 78-31-41-400-001-A	Installation of the Blocker Door Hydraulic Actuator
TASK 78-31-41-400-803-A	Installation of the Blocker Door Hydraulic Actuator Clevis
TASK 78-32-41-080-001-A	Removal of the Safety Sleeve from Blocker Door Actuator
TASK 78-32-41-480-001-A	Installation of the Safety Sleeve on Blocker Door Actuator
TASK 78-32-41-860-001-A	Manual Deployment of the Blocker Door
TASK 78-32-41-860-002-A	Manual Stowing of the Blocker Door
AIPC 78-31-41-02
Blocker Door Actuator
Clevis Access Doors

3. Job Set-up
Subtask 78-31-41-941-070-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Put a WARNING NOTICE(S) in position to tell persons not to start the engine.
(2) Make sure that engine 1(2) shutdown occurred not less than five minutes before you do this procedure.
(3) On 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) in position to tell persons not to energize the FADEC 1(2).

Subtask 78-31-41-010-078-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 78-31-41-040-069-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser

WARNING: MAKE THE THRUST REVERSER UNSERVICEABLE. IF THE THRUST REVERSER IS NOT MADE UNSERVICEABLE, IT CAN OPERATE ACCIDENTALLY BECAUSE THE BLOCKER DOOR HOLD-OPEN ROD DOES NOT RESIST THE ACTUATOR HYDRAULIC PRESSURE. THIS CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT.

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

Subtask 78-31-41-860-069-A ** ON A/C NOT FOR ALL

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

Subtask 78-31-41-480-060-A ** ON A/C NOT FOR ALL

E. Install the HIX3005 SAFETY SLEEVE - PIVOTING DOOR ACTUATOR on the blocker door (Ref. AMM TASK 78-32-41-480-001).

4. Procedure
Subtask 78-31-41-210-065-A ** ON A/C NOT FOR ALL

A. Do a visual inspection of the clevis and the related hardware as follows:

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
1.Examine the clevis and the related hardware for:
A.Damage	No damage permitted	If you find damage, replace the defective part (Ref. AMM TASK 78-31-41-000-803) and (Ref. AMM TASK 78-31-41-400-803).
B.Missing	None permitted	If you find a part missing, replace the defective part (Ref. AMM TASK 78-31-41-000-803) and (Ref. AMM TASK 78-31-41-400-803).
C.Bolts protrusion through the locking feature of the nut	Bolt must protrude a minimum of 1.5 threads through nut.	Replace the bolt with the bolt of the correct length AIPC 78-31-41-02 .
2.Examine the blocker door actuator for:
A.Scratch	No scratch permitted	If there is a scratch, replace the actuator (Ref. AMM TASK 78-31-41-000-001) and (Ref. AMM TASK 78-31-41-400-001).

5. Close-up
Subtask 78-31-41-080-056-A ** ON A/C NOT FOR ALL

A. Remove the HIX3005 SAFETY SLEEVE - PIVOTING DOOR ACTUATOR from the blocker door actuator (Ref. AMM TASK 78-32-41-080-001).

Subtask 78-31-41-110-054-A ** ON A/C NOT FOR ALL

B. Clean the hydraulic actuator rod:
(1) Use isopropyl alcohol (Material No.CP1041) and a lint-free cotton cloth Textile-Lint free Cotton - (Material No.14SBA1) to clean the actuator rod. make sure you clean around the end of the cylinder where additional debris will collect.
(2) After cleaning, use hydraulic fluid wipes and do as follows:
(a) Wipe the piston and cylinder/actuator cap rod end with isopropyl alcohol (Material No.CP1041) .
(b) Wipe the piston with hydraulic fluid NSA-307-110 type 4 (Material No.CP2212) .

Subtask 78-31-41-860-070-A ** ON A/C NOT FOR ALL

C. Close the blocker doors.

CAUTION: BLOCKER DOOR LATCH MUST BE OPENED WHEN YOU CLOSE THE BLOCKER DOOR OR DAMAGE CAN OCCUR.

(1) Move the blocker doors to the stowed position manually (Ref. AMM TASK 78-32-41-860-002).

Subtask 78-31-41-440-066-A ** ON A/C NOT FOR ALL

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

Subtask 78-31-41-410-075-A ** ON A/C NOT FOR ALL

E. 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 access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:24:28 UTC