Removal of the Jet Pump

TASK 28-21-53-000-001-A
Removal of the Jet Pump

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

FIN: 66QM ** ON A/C NOT FOR ALL
FIN: 67QM ** ON A/C NOT FOR ALL
FIN: 68QM ** ON A/C NOT FOR ALL
FIN: 69QM ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	SCRAPER - NON METALLIC
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [66QM] (JET PUMP-WATER SCAVENGE, L VENT SURGE TK or JET PUMP-WATER SCAVENGE, L VENT SURGE TK)
FOR [67QM] (JET PUMP-WATER SCAVENGE, L WING TK)
540KB, 575DB
FOR [68QM] (JET PUMP-WATER SCAVENGE, R WING TK)
FOR [69QM] (JET PUMP-WATER SCAVENGE, R VENT SURGE TK or JET PUMP-WATER SCAVENGE, R VENT SURGE TK)
640KB, 675DB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 27-50-00-866-008-A	Extension of the Flaps on the Ground
TASK 27-50-00-866-008-A-01	Extension of the Flaps/Slats on the Ground
TASK 27-60-00-866-002-A	Extension-Retraction of the Spoilers for Maintenance
TASK 28-10-00-910-001-A	Safety Procedures When You Do Work in a Fuel Tank
TASK 28-10-00-910-002-A	Access to the Fuel Tanks and the Work Areas
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 57-27-11-000-002-A	Removal of the Access Panel
Jet Pump - Wing Tank
FOR [66QM] (JET PUMP-WATER SCAVENGE, L VENT SURGE TK or JET PUMP-WATER SCAVENGE, L VENT SURGE TK)
FOR [67QM] (JET PUMP-WATER SCAVENGE, L WING TK)
TASK 57-51-37-000-004-A	Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)
FOR [68QM] (JET PUMP-WATER SCAVENGE, R WING TK)
FOR [69QM] (JET PUMP-WATER SCAVENGE, R VENT SURGE TK or JET PUMP-WATER SCAVENGE, R VENT SURGE TK)
TASK 57-51-37-000-004-A	Removal of the Access Panels 575AB(675AB), 575BB(675BB), 575CB(675CB), 575DB(675DB), 575EB(675EB), 575FB(675FB), 575GB(675GB), 575HB(675HB)

3. Job Set-up
Subtask 28-21-53-941-055-A ** ON A/C NOT FOR ALL

A. Safety Precautions

WARNING: BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.

(1) You must obey the fuel safety procedures when you do work in a fuel tank (Ref. AMM TASK 28-10-00-910-001).
(2) Put the SAFETY BARRIER(S) in position.
(3) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the flight controls.

Subtask 28-21-53-865-050-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
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
123VU	L WING TK/PUMP 1/STBY SPLY	11QA	AD12
123VU	R WING TK/PUMP 1/STBY SPLY	12QA	AE12

Subtask 28-21-53-860-050-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration

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.

(1) Extend the flaps fully (Ref. AMM TASK 27-50-00-866-008).
(2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is on the slat/flap control lever.
(3) Put the applicable spoiler No. 3 in the maintenance position (Ref. AMM TASK 27-60-00-866-002).
(4) Make sure that the 98D27604000000 COLLAR-SAFETY, SPOILER or 98D27604004000 COLLAR SAFETY SPOILER is on the applicable spoiler No. 3 servo-control.
(5) Defuel the applicable fuel tank (Ref. AMM TASK 28-25-00-650-001).
(6) Drain the remaining fuel from the applicable fuel tank (Ref. AMM TASK 28-25-00-650-003).

Subtask 28-21-53-010-050-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE below the applicable zone 540(640) and 575(675).
(2) Remove the applicable access panel (Ref. AMM TASK 57-27-11-000-002) and (Ref. AMM TASK 28-10-00-910-002):

(a) FOR [66QM] (JET PUMP-WATER SCAVENGE, L VENT SURGE TK or JET PUMP-WATER SCAVENGE, L VENT SURGE TK), [67QM] (JET PUMP-WATER SCAVENGE, L WING TK)
remove 540KB
(b) FOR [68QM] (JET PUMP-WATER SCAVENGE, R WING TK), [69QM] (JET PUMP-WATER SCAVENGE, R VENT SURGE TK or JET PUMP-WATER SCAVENGE, R VENT SURGE TK)
remove 640KB.
(3) Remove the applicable access panel:

(a) FOR [66QM] (JET PUMP-WATER SCAVENGE, L VENT SURGE TK or JET PUMP-WATER SCAVENGE, L VENT SURGE TK), [67QM] (JET PUMP-WATER SCAVENGE, L WING TK)
remove 575DB (Ref. AMM TASK 57-51-37-000-004)
(b) FOR [68QM] (JET PUMP-WATER SCAVENGE, R WING TK), [69QM] (JET PUMP-WATER SCAVENGE, R VENT SURGE TK or JET PUMP-WATER SCAVENGE, R VENT SURGE TK)
remove 675DB (Ref. AMM TASK 57-51-37-000-004).

4. Procedure
Subtask 28-21-53-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Jet Pump 66QM(69QM), 67QM(68QM)

CAUTION: YOU MUST USE TWO WRENCHES AND HOLD THE COMPONENT WHEN YOU REMOVE/INSTALL THE PIPE COUPLINGS AND/OR UNIONS. THIS PREVENTS DAMAGE TO THE COMPONENT.

(1) Remove the nut (23), the bolt (8) and disconnect the bonding strips (21) and (22).
(2) Disconnect the coupling nuts (12), (13) and (20) and install CAP - BLANKING on the coupling nuts (12), (13) and (20).
(3) Use a SCRAPER - NON METALLIC to carefully remove the sealant from the nuts (4).

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(4) Cut, remove and discard the lockwire from the end plug (7).
(5) Remove the nuts (4) and the washers (3).
(6) Remove the jet pump (24) and remove and discard the O-rings (1) or (2) and the O-rings (5) or (6).
(7) Remove the unions (11), (14) and (19) and remove and discard the O-rings (9) or (10, (15) or (16) and (17) or (18).
(8) Install CAP - BLANKING on the unions (11), (14) and (19) and the jet pump (24).

[Rev.10 from 2021] 2026.04.02 06:17:29 UTC