Removal of the Door Actuator

TASK 52-36-18-000-001-A
Removal of the Door Actuator

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

ZONE: 825
ZONE: 826
FIN: 2502MJ
FIN: 2503MJ
FIN: 2505MJ
FIN: 2506MJ

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	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	1	CONTAINER 20L (5 USGAL)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
98D52307524000	2	STRUT-SUPPORT,CARGO DOORS

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
825	FORWARD CARGO COMPARTMENT DOOR
826	AFT CARGO COMPARTMENT DOOR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-23-00-860-001-A	Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 52-30-00-480-001-A	Installation of the Safety Support Equipment
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
FWD/Aft Door Actuator

3. Job Set-up
Subtask 52-36-18-010-051-A

A. Get Access
(1) Open the FWD or aft cargo-compartment door (referred to as cargo door) (Ref. AMM TASK 52-30-00-860-001).
(2) Install the 98D52307524000 STRUT-SUPPORT,CARGO DOORS to safety the opened cargo door (Ref. AMM TASK 52-30-00-480-001).
(3) Make sure that the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE stays in position below the opened cargo door.

Subtask 52-36-18-865-050-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N30
** ON A/C NOT FOR ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N31
** ON A/C ALL
122VU	DOORS/CARGO	1MJ	T12
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 52-36-18-860-053-A

C. Aircraft Maintenance Configuration
(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001).
(3) Depressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-001).
(4) Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. AMM TASK 29-23-00-860-001).
(5) Put the warning notices in position to tell persons not to pressurize the Yellow hydraulic system:

In the cockpit on the hydraulic section 40VU of the overhead panel
On the ground service panel of the Yellow hydraulic system.

(6) Put the CONTAINER 20L (5 USGAL) below the hydraulic connections of the door actuator to collect the hydraulic fluid.

4. Procedure
Subtask 52-36-18-020-050-B

A. Removal of the Door Actuator

CAUTION: USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU DO NOT USE THE SECOND WRENCH, THERE IS A RISK THAT YOU WILL LOOSEN OR TIGHTEN THE UNION TOO MUCH.

(1) Disconnect the electrical connector (27) from the door actuator (16) as follows:
(a) Remove the electrical connector (27) from the receptacle of the proximity switch.
(b) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Remove the bonding jumpers (14) and (19) from the door actuator (16) as follows:
(a) Remove the screw (12), the washer (13), the nut (15) and disconnect the bonding jumper (14) from the bonding angle of the eye-end (10).
(b) Remove the screw (17) and the washer (18) and disconnect the bonding jumper (19) from the door actuator (16)
(3) Disconnect the hydraulic connections from the door actuator (16) as follows:
(a) Loosen the union and remove the flexible hose (29) from port A of the door actuator (16).
(b) Loosen the union and remove the flexible hose (28) from port B of the door actuator (16).
(c) Install PLUG - BLANKING in the open ports and CAP - BLANKING on the flexible hoses (28) and (29).
(4) Disconnect the door actuator (16) from the cargo door structure as follows:
(a) Remove and discard the cotter pin (1) from the nut (2).
(b) Remove the nut (2), the washer (3) from the bolt (5).
(c) Hold the door actuator (16) and remove the bolt (5) with the washer (3) from the actuator attachment fitting (4).
(d) Remove the eye-end (10) from the actuator attachment fitting (4).
(e) If necessary, remove the bushes (9) and (11) from the actuator attachment fitting (3).
(5) Disconnect the door actuator (16) from the fuselage structure as follows:
(a) Remove and discard the cotter pin (26) from the nut (25).
(b) Remove the nut (25), the washer (23) from the bolt (22).
(c) Hold the door actuator (16) and remove the bolt (22) with the washer (23) from the actuator beam (24).
(d) Remove the door actuator (16) from the actuator beam (24).
(e) If necessary, remove the bushes (20) and (21) from the actuator beam (24).
(6) Measure the distance between the eye-ends of the removed door actuator (16) and record it to make the installation procedure easier.

[Rev.10 from 2021] 2026.04.01 06:28:11 UTC