Removal of the Door Seal

TASK 52-31-18-000-001-A
Removal of the Door Seal

CAUTION: IMMEDIATELY AFTER YOU OPEN THE CARGO COMPARTMENT DOOR, RECORD ON THE WORK CARD ON THE DOOR, THE DATE AND TIME WHEN YOU OPENED IT. IF THE CARGO COMPARTMENT DOOR STAYS OPEN FOR 12 HOURS OR MORE, YOU MUST BLEED THE HYDRAULIC SYSTEM RELATED TO IT. IF YOU DO NOT OBEY THESE PRECAUTIONS, THE DOOR CAN CLOSE SUDDENLY WHEN YOU SET THE DOOR TO "CLOSE". THIS CAN CAUSE DAMAGE TO THE DOOR AND TO THE AIRCRAFT STRUCTURE.

1. Reason for the Job

NOTE: This task can help increase fuel savings.

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	SAFETY CLIP - CIRCUIT BREAKER
98D52307524000	1	STRUT-SUPPORT,CARGO DOORS

B. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
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
TASK 52-31-24-000-001-A	Removal of the Wiring Harness
Door Seal
Disconnection of Related Components

3. Job Set-up
Subtask 52-31-18-010-053-A

A. Get Access
(1) Open the FWD 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 52-31-18-865-050-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 52-31-18-860-051-A

C. Aircraft Maintenance Configuration
(1) Depressurize the hydraulic reservoirs (Ref. AMM TASK 29-14-00-614-001).
(2) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-10-00-864-002).

4. Procedure
Subtask 52-31-18-020-050-C

A. Removal of the Door Seal and the Related Components

Door Seal

Disconnection of Related Components

(1) Disconnect the connector (20) from the receptacle (19) and remove wire harness 4611VB (21) from the door actuator area (Ref. AMM TASK 52-31-24-000-001).
(2) Disconnect the door actuator (18) from the cargo door as follows:
(a) Remove the nut (9), the washer (11), the bolt (12) and the bonding jumper (10) from the actuator attachment fitting (13).
(b) Remove and discard the cotter pin (17) from the nut (16).
(c) Remove the nut (16), the washer (15) from the bolt (14).
(d) Hold the door actuator (18) and remove the bolt (14) and the washer (15).
(e) Disconnect the piston eye-end of the door actuator (18) from the actuator attachment fitting (13).
(3) Pull the door seal (1) out of the retainer (2).

[Rev.10 from 2021] 2026.04.02 06:27:51 UTC