Removal of the Access Cover 148AZ or/and the ACT-Equipment Support Door
TASK 57-17-11-000-001-A-01
Removal of the Access Cover 148AZ or/and the ACT-Equipment Support Door
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 57-17-11-010-057-A
Subtask 57-17-11-020-057-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2017]
2026.04.02 06:30:34 UTC
Removal of the Access Cover 148AZ or/and the ACT-Equipment Support Door
WARNING:
MAKE SURE THAT YOU HAVE THE CORRECT FIRE FIGHTING EQUIPMENT AVAILABLE.
WARNING:
OBEY THE SAFETY PROCEDURES WHEN YOU DO WORK IN A FUEL TANK.
WARNING:
BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES.
IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER.
IF NECESSARY, GET MEDICAL HELP.
AIRCRAFT FUEL IS POISONOUS.
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.
1. Reason for the JobNOTE: This task is applicable for aircraft with Additional Center Tank.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | AR | SAFETY BARRIER(S) |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 147 | MAIN GEAR WELL AND HYDRAULIC COMPARTMENT |
| 148 | MAIN GEAR WELL AND HYDRAULIC COMPARTMENT |
| 734, 744 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 28-00-00-910-001-A | Fuel Safety Procedures |
| TASK 28-10-00-910-001-A | Safety Procedures When You Do Work in a Fuel Tank |
| TASK 28-25-00-650-001-A | Pressure Defuel |
| TASK 28-25-00-650-003-A | To Drain Remaining Fuel from the Wing Tanks and the Center Tank |
| TASK 28-25-00-650-003-A-01 | To Drain Remaining Fuel from the Wing Tanks and the Center Tank |
| TASK 28-25-00-869-001-A | Fuel Transfer |
| TASK 28-28-11-000-001-A | Removal of the ACT Fuel Transfer-Pump Pressure-Switch |
| TASK 28-28-31-000-001-A | Removal of the ACT Fuel-Transfer-Pump Mounting-Plate |
| TASK 28-28-33-000-001-A | Removal of the ACT Fuel Transfer-Valve |
| TASK 32-12-00-410-001-A | Close the Main Gear Doors after Access |
| TASK 57-17-11-000-003-A | Removal of the Protective Cover of the ACT-Equipment Support Door |
Subtask 57-17-11-010-057-A
A. Get Access
(1) Open the Main Landing Gear (MLG) door 734 ( 744 and install the safety devices (Ref. AMM TASK 32-12-00-410-001).
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at zone 147 or 148.
(3) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
Subtask 57-17-11-650-059-A (1) Open the Main Landing Gear (MLG) door 734 ( 744 and install the safety devices (Ref. AMM TASK 32-12-00-410-001).
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at zone 147 or 148.
(3) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
B. Aircraft Maintenance Configuration
(1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001), (Ref. AMM TASK 28-10-00-910-001).
(2) Defuel the center tank (Ref. AMM TASK 28-25-00-650-001) or move the fuel into a different tank (Ref. AMM TASK 28-25-00-869-001).
(3) Drain the remaining fuel in the center tank (Ref. AMM TASK 28-25-00-650-003).
Subtask 57-17-11-865-063-A (1) Obey the fuel safety procedures (Ref. AMM TASK 28-00-00-910-001), (Ref. AMM TASK 28-10-00-910-001).
(2) Defuel the center tank (Ref. AMM TASK 28-25-00-650-001) or move the fuel into a different tank (Ref. AMM TASK 28-25-00-869-001).
(3) Drain the remaining fuel in the center tank (Ref. AMM TASK 28-25-00-650-003).
C. Open, safety and tag this(these) circuit breaker(s):
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | FUEL/X FEED/VALVE/MOT1 | 2QE | A12 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | FUEL/CTR TK/PUMP2 SPLY | 30QA | P26 |
| 121VU | FUEL/CTR TK/PUMP1 SPLY | 29QA | P23 |
| ** ON A/C ALL | |||
| 121VU | FUEL/RFL/DFL/SPLY | 2QU | L24 |
| 121VU | FUEL/RFL/DFL/XFR/DEFUEL/VALVE | 1QU | L23 |
| 121VU | FUEL/L WING TK/PUMP2 SPLY | 7QA | N26 |
| 121VU | FUEL/L WING TK/PUMP1 SPLY | 1QA | N23 |
| 121VU | FUEL/R WING TK/PUMP2 SPLY | 8QA | Q26 |
| 121VU | FUEL/R WING TK/PUMP1 SPLY | 2QA | Q23 |
Subtask 57-17-11-020-057-A ** ON A/C NOT FOR ALL
A. Removal of the Access Cover 148AZ
(1) Remove the bolt (13), the washer (14) and disconnect the bonding strip (15).
(2) Remove the screws (16), the washers (17) and the washers (18).
(3) Remove the access cover (11).
Subtask 57-17-11-020-057-B ** ON A/C NOT FOR ALL (1) Remove the bolt (13), the washer (14) and disconnect the bonding strip (15).
(2) Remove the screws (16), the washers (17) and the washers (18).
(3) Remove the access cover (11).
NOTE: Hold the access cover (11) in position when you remove the fasteners.
(4) Remove and discard the seal (12). A. Removal of the Access Cover 148AZ
(3) If the placards are damaged, missing, painted over or you cannot easily read them, replace them at the next maintenance opportunity.
(4) Remove the bolt (13), the washer (14) and disconnect the bonding strip (15).
(5) Remove the screws (16), the washers (17) and the washers (18).
(6) Remove the access cover (11).
Subtask 57-17-11-020-058-A ** ON A/C NOT FOR ALL WARNING:
MAKE SURE THAT THE WARNING/CAUTION PLACARDS ARE INSTALLED AND YOU CAN EASILY READ THEM. THESE PLACARDS TELL PERSONS THAT THERE IS A POSSIBLE LOW OXYGEN CONTENT IN:
(1) Do a visual inspection to look for placards that are: - THE AREA BEHIND THE ACCESS PANEL(S)
- THE ADJACENT AREAS WHEN THE ACCESS PANEL(S) IS(ARE) OPEN.
- Damaged
- Missing
- Painted over.
(3) If the placards are damaged, missing, painted over or you cannot easily read them, replace them at the next maintenance opportunity.
(4) Remove the bolt (13), the washer (14) and disconnect the bonding strip (15).
(5) Remove the screws (16), the washers (17) and the washers (18).
(6) Remove the access cover (11).
NOTE: Hold the access cover (11) in position when you remove the fasteners.
(7) Remove and discard the seal (12). B. Removal of the ACT-Equipment Support Door
(1) Remove the protective cover (Ref. AMM D/O 57-17-11-00).
(2) Remove the following components:
(4) Remove the screw (30), the washer (32) and disconnect the bonding strip (29).
(5) Remove the screw (39), the washer (40) and disconnect the bonding strip (38).
(6) Remove the screw (36), the washer (35), the bonding strip (38) and disconnect the bonding strip (37).
(7) Remove the bolts (21), the washers (22), the washers (23) and the fittings (24), (31) and (41).
(8) Remove the ACT-equipment support door (34).
Subtask 57-17-11-020-058-C ** ON A/C NOT FOR ALL (1) Remove the protective cover (Ref. AMM D/O 57-17-11-00).
(2) Remove the following components:
- the fuel transfer pump 163QM (Ref. AMM D/O 28-28-31-00)
- the refuel valve canister 164QM (Ref. AMM D/O 28-25-52-00)
- the fuel transfer valve 165QM (Ref. AMM D/O 28-28-33-00)
- the pressure switch 2QH (Ref. AMM D/O 28-28-11-00).
(4) Remove the screw (30), the washer (32) and disconnect the bonding strip (29).
(5) Remove the screw (39), the washer (40) and disconnect the bonding strip (38).
(6) Remove the screw (36), the washer (35), the bonding strip (38) and disconnect the bonding strip (37).
(7) Remove the bolts (21), the washers (22), the washers (23) and the fittings (24), (31) and (41).
(8) Remove the ACT-equipment support door (34).
NOTE: Hold the ACT-equipment support door (34) in position when you remove the bolts (21).
(9) Remove and discard the seal (33). B. Removal of the ACT-Equipment Support Door
(3) If the placards are damaged, missing, painted over or you cannot easily read them, replace them at the next maintenance opportunity.
(4) Remove the protective cover (Ref. AMM D/O 57-17-11-00).
(5) Remove the following components:
(7) Remove the screw (30), the washer (32) and disconnect the bonding strip (29).
(8) Remove the screw (39), the washer (40) and disconnect the bonding strip (38).
(9) Remove the screw (36), the washer (35), the bonding strip (38) and disconnect the bonding strip (37).
(10) Remove the bolts (21), the washers (22), the washers (23) and the fittings (24), (31) and (41).
(11) Remove the ACT-equipment support door (34).
Subtask 57-17-11-020-058-K ** ON A/C NOT FOR ALL WARNING:
MAKE SURE THAT THE WARNING/CAUTION PLACARDS ARE INSTALLED AND YOU CAN EASILY READ THEM. THESE PLACARDS TELL PERSONS THAT THERE IS A POSSIBLE LOW OXYGEN CONTENT IN:
(1) Do a visual inspection to look for placards that are: - THE AREA BEHIND THE ACCESS PANEL(S)
- THE ADJACENT AREAS WHEN THE ACCESS PANEL(S) IS(ARE) OPEN.
- Damaged
- Missing
- Painted over.
(3) If the placards are damaged, missing, painted over or you cannot easily read them, replace them at the next maintenance opportunity.
(4) Remove the protective cover (Ref. AMM D/O 57-17-11-00).
(5) Remove the following components:
- the fuel transfer pump 163QM (Ref. AMM D/O 28-28-31-00)
- the refuel valve canister 164QM (Ref. AMM D/O 28-25-52-00)
- the fuel transfer valve 165QM (Ref. AMM D/O 28-28-33-00)
- the pressure switch 2QH (Ref. AMM D/O 28-28-11-00).
(7) Remove the screw (30), the washer (32) and disconnect the bonding strip (29).
(8) Remove the screw (39), the washer (40) and disconnect the bonding strip (38).
(9) Remove the screw (36), the washer (35), the bonding strip (38) and disconnect the bonding strip (37).
(10) Remove the bolts (21), the washers (22), the washers (23) and the fittings (24), (31) and (41).
(11) Remove the ACT-equipment support door (34).
NOTE: Hold the ACT-equipment support door (34) in position when you remove the bolts (21).
(12) Remove and discard the seal (33). B. Removal of the ACT-Equipment Support Door
(3) If the placards are damaged, missing, painted over or you cannot easily read them, replace them at the next maintenance opportunity.
(4) Remove the protective cover (Ref. AMM TASK 57-17-11-000-003).
(5) Remove the following components:
(7) Remove the screw (30), the washer (32) and disconnect the bonding strip (29).
(8) Remove the screw (39), the washer (40) and disconnect the bonding strip (38).
(9) Remove the screw (36), the washer (35), the bonding strip (38) and disconnect the bonding strip (37).
(10) Remove the bolts (21), the washers (22), the washers (23) and the fittings (24), (31) and (41).
(11) Remove the ACT-equipment support door (34).
WARNING:
MAKE SURE THAT THE WARNING/CAUTION PLACARDS ARE INSTALLED AND YOU CAN EASILY READ THEM. THESE PLACARDS TELL PERSONS THAT THERE IS A POSSIBLE LOW OXYGEN CONTENT IN:
(1) Do a visual inspection to look for placards that are: - THE AREA BEHIND THE ACCESS PANEL(S)
- THE ADJACENT AREAS WHEN THE ACCESS PANEL(S) IS(ARE) OPEN.
- Damaged
- Missing
- Painted over.
(3) If the placards are damaged, missing, painted over or you cannot easily read them, replace them at the next maintenance opportunity.
(4) Remove the protective cover (Ref. AMM TASK 57-17-11-000-003).
(5) Remove the following components:
- the fuel transfer pump 163QM (Ref. AMM TASK 28-28-31-000-001)
- the fuel transfer valve 165QM (Ref. AMM TASK 28-28-33-000-001)
- the pressure switch 2QH (Ref. AMM TASK 28-28-11-000-001).
(7) Remove the screw (30), the washer (32) and disconnect the bonding strip (29).
(8) Remove the screw (39), the washer (40) and disconnect the bonding strip (38).
(9) Remove the screw (36), the washer (35), the bonding strip (38) and disconnect the bonding strip (37).
(10) Remove the bolts (21), the washers (22), the washers (23) and the fittings (24), (31) and (41).
(11) Remove the ACT-equipment support door (34).
NOTE: Hold the ACT-equipment support door (34) in position when you remove the bolts (21).
(12) Remove and discard the seal (33).
Illustration of the Access Cover 148AZ