Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump

TASK 52-30-00-860-001-A
Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump

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.

CAUTION: YOU MUST CLOSE THE CARGO COMPARTMENT DOORS BEFORE THE WIND SPEED IS MORE THAN 65 KNOTS TO PREVENT DAMAGE TO THE DOOR OR TO THE AIRCRAFT STRUCTURE.

CAUTION: DO NOT OPEN THE CARGO COMPARTMENT DOORS IF THE WIND SPEED IS MORE THAN 40 KNOTS. THIS WILL PREVENT DAMAGE TO THE DOOR OR TO THE AIRCRAFT STRUCTURE.

CAUTION: WHEN YOU OPEN AND CLOSE THE CARGO DOORS, MAKE SURE THAT THE ACCESS PLATFORM IS AT THE CORRECT HEIGHT. IF IT IS TOO HIGH, IT WILL PREVENT FREE MOVEMENT OF THE DOORS.

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 2M (6 FT)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
134AR, 154AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
TASK 29-24-00-864-001-A	Depressurize the Yellow Hydraulic System
TASK 52-30-00-480-001-A	Installation of the Safety Support Equipment
Normal Operation - Aft Cargo Compartment Door ** ON A/C NOT FOR ALL
Normal Operation - FWD Cargo Compartment Door ** ON A/C NOT FOR ALL
Normal Operation - Aft Cargo Compartment Door ** ON A/C NOT FOR ALL
Aft Cargo-Compartment Door Operation ** ON A/C NOT FOR ALL
FWD Cargo-Compartment Door Operation ** ON A/C NOT FOR ALL
Aft Cargo-Compartment Door Operation ** ON A/C NOT FOR ALL
FWD Cargo-Compartment Door Operation ** ON A/C NOT FOR ALL
Aft Cargo-Compartment Door Operation ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 52-30-00-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the Yellow hydraulic system reservoir is pressurized (Ref. AMM TASK 29-14-00-614-002).
(2) Make sure that the level of the hydraulic fluid in the Yellow reservoir is correct (Ref. AMM TASK 12-12-29-611-001).
(3) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 52-30-00-865-050-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

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 52-30-00-010-050-A

C. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) in position below the FWD or Aft cargo-compartment door.

CAUTION: WHEN YOU OPEN AND CLOSE THE CARGO DOORS, MAKE SURE THAT THE ACCESS PLATFORM IS AT THE CORRECT HEIGHT. IF IT IS TOO HIGH, IT WILL PREVENT FREE MOVEMENT OF THE DOORS.

(2) Open the access panel 134AR or 154AR as necessary.

4. Procedure
Subtask 52-30-00-869-050-C ** ON A/C NOT FOR ALL

WARNING: MAKE SURE THAT THE TRAVEL RANGE OF THE CARGO DOOR IS CLEAR BEFORE YOU UNLOCK IT. STAY AFT OF (LEFT OF) THE DOOR WHEN YOU UNLOCK IT BECAUSE IT CAN OPEN SUDDENLY AND CAUSE INJURY.

CAUTION: DO NOT OPEN THE CARGO COMPARTMENT DOORS IF THE WIND SPEED IS MORE THAN 40 KNOTS. THIS WILL PREVENT DAMAGE TO THE DOOR OR TO THE AIRCRAFT STRUCTURE.

A. Open the FWD or Aft Cargo-Compartment Door

NOTE: If you put the aircraft nose into the wind, the maximum wind speed can be 50 knots.

(1) Push the handle flap in to release the door handle from the catch of the door structure.
(2) Pull the door handle away and up from the door structure to the fully UNLOCKED position.

NOTE: The unlatched cargo door opens to the vertical position because of the force of gravity.

(3) Operation on the control panel:

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.

(a) Move the selector of the control panel to the OPEN position and hold it until the green indicator light comes on.

NOTE: The green indicator light shows that the cargo door is in its fully open position. The door actuators are in their extended positions and internally locked.

(4) If the cargo door does not open, do these steps:

NOTE: It is not possible to open the cargo door immediately after it is closed. The unlocked cargo door cannot move to the vertical position because of the remaining internal pressure in the door actuators.

(a) Make sure that no person operates the other cargo door during this procedure.
(b) Pull the door handle down to the LOCKED position and push it into the recess of the door structure.
(c) Wait for a minimum of 30 seconds, then continue with the subsequent steps.

NOTE: This time delay will cause the E-pump 3075GX to stop and the selector valve 2500MJ to be in the closed position.

(d) Move the selector of the control panel to the CLOSE position and hold it for approximately 5 seconds.
(e) Move the selector of the control panel to the OPEN position and hold it for approximately 5 seconds to release the internal pressure.
(f) Pull the door handle up to the UNLOCKED position and the related cargo door opens to its vertical position.
(g) If the cargo door does not move to its vertical position, do the steps (a) thru (f) again.
(h) Move the selector of the control panel to the OPEN position and hold it until the green indicator light comes on.
(5) Release the selector when the green indicator light is on.

NOTE: The selector must go back automatically to the NEUTRAL position. If not, put it manually in the NEUTRAL position to prevent a permanent operation of the yellow hydraulic pump.

(6) If necessary, install the applicable safety support equipment to safety the opened cargo door (Ref. AMM TASK 52-30-00-480-001).

Subtask 52-30-00-869-050-G ** ON A/C NOT FOR ALL

WARNING: MAKE SURE THAT THE TRAVEL RANGE OF THE CARGO DOOR IS CLEAR BEFORE YOU UNLOCK IT. STAY AFT OF (LEFT OF) THE DOOR WHEN YOU UNLOCK IT BECAUSE IT CAN OPEN SUDDENLY AND CAUSE INJURY.

CAUTION: DO NOT OPEN THE CARGO COMPARTMENT DOORS IF THE WIND SPEED IS MORE THAN 40 KNOTS. THIS WILL PREVENT DAMAGE TO THE DOOR OR TO THE AIRCRAFT STRUCTURE.

A. Open the FWD or Aft Cargo-Compartment Door

NOTE: If you put the aircraft nose into the wind, the maximum wind speed can be 50 knots.

(1) Push the handle flap in to release the door handle from catch of the door structure.
(2) Pull the door handle away and up from the door structure to the fully UNLOCKED position.

NOTE: The unlatched cargo door opens to the vertical position because of the force of gravity.

(3) Operation on the control panel:

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.

(a) Move the selector of the control panel to the OPEN position and hold it until the green indicator light comes on.

NOTE: The green indicator light shows that the cargo door is in its fully open position. The door actuators are in their extended positions and internally locked.

(4) If the cargo door does not open, do these steps:

NOTE: This causes the E-pump 3075GX to stop and the selector valve 2500MJ to be in the closed position.

(d) Move the selector of the control panel to the CLOSE position and hold it for approximately 5 seconds.
(e) Move the selector of the control panel to the OPEN position and hold it there for approximately 5 seconds to release the internal pressure.
(f) Pull the door handle up to the UNLOCKED position and the related cargo door opens to its vertical position.
(g) If the cargo door does not move to its vertical position, do the steps (a) thru (f) again.
(h) Move the selector of the control panel to the OPEN position and hold it until the green indicator light comes on.
(5) Release the selector when the green indicator light is on.

NOTE: The selector must go back automatically to the NEUTRAL position. If not, put it manually in the NEUTRAL position to prevent a permanent operation of the yellow hydraulic pump.

(6) If necessary, install the applicable safety support equipment to safety the opened cargo door (Ref. AMM TASK 52-30-00-480-001).

Subtask 52-30-00-869-050-K ** ON A/C NOT FOR ALL

WARNING: MAKE SURE THAT THE TRAVEL RANGE OF THE CARGO DOOR IS CLEAR BEFORE YOU UNLOCK IT. STAY AFT OF (LEFT OF) THE DOOR WHEN YOU UNLOCK IT BECAUSE IT CAN OPEN SUDDENLY AND CAUSE INJURY.

CAUTION: DO NOT OPEN THE CARGO COMPARTMENT DOORS IF THE WIND SPEED IS MORE THAN 40 KNOTS. THIS WILL PREVENT DAMAGE TO THE DOOR OR TO THE AIRCRAFT STRUCTURE.

A. Open the FWD or Aft Cargo-Compartment Door

NOTE: If you put the aircraft nose into the wind, the maximum wind speed can be 50 knots.

(1) Release the door handle from the catch of the door structure as follows:
(a) Push and hold the push-button.
(b) Push the handle flap.
(2) Pull the door handle away and up from the door structure to the fully UNLOCKED position.

NOTE: The unlatched cargo door opens to the vertical position because of the force of gravity.

(3) Operation on the control panel:

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.

(a) Move the selector of the control panel to the OPEN position and hold it until the green indicator light comes on.

NOTE: The green indicator light shows that the cargo door is in its fully open position. The door actuators are in their extended positions and internally locked.

(4) If the cargo door does not open, do these steps:

NOTE: This causes the E-pump 3075GX to stop and the selector valve 2500MJ to be in the closed position.

(d) Move the selector of the control panel to the CLOSE position and hold it for approximately 5 seconds.
(e) Move the selector of the control panel to the OPEN position and hold it there for approximately 5 seconds to release the internal pressure.
(f) Push and hold the push-button.
(g) Push the handle flap.
(h) Pull the door handle up to the UNLOCKED position and the related cargo door opens to its vertical position.
(i) If the cargo door does not move to its vertical position, do the steps (a) thru (f) again.
(j) Move the selector of the control panel to the OPEN position and hold it until the green indicator light comes on.
(5) Release the selector when the green indicator light is on.

NOTE: The selector must go back automatically to the NEUTRAL position. If not, put it manually in the NEUTRAL position to prevent a permanent operation of the yellow hydraulic pump.

(6) If necessary, install the applicable safety support equipment to safety the opened cargo door (Ref. AMM TASK 52-30-00-480-001).

5. Close-up
Subtask 52-30-00-860-051-A

A. Put the aircraft back to the serviceable condition.
(1) Make sure that the Yellow auxiliary hydraulic system is depressurized (Ref. AMM TASK 29-24-00-864-001).
(2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(3) Close the access panel 134AR or 154AR.
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 03:46:12 UTC