(5)
 Make sure that the access platform is below the applicable access panel 147AZ (148AZ).

 (6)
 Make sure that the applicable access panel 147AZ (148AZ) is removed (Ref. TASK 28-10-00-910-002), (Ref. TASK 57-17-11-000-001).

 Subtask 28-26-41-865-052
 C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU FUEL/CTR TK/AUTO/CTL 3QL R27 121VU FUEL/CTR TK/L&R XFR/CTL & IND 2QL R26 121VU FUEL/CTR TK/L&R XFR/CTL & IND 1QL R25
 4. Procedure
_________
 (Ref. Fig. 401/TASK 28-26-41-991-001) Subtask 28-26-41-420-051
 A. Preparation for Installation
 (1)
 Clean the component interfaces and the adjacent areas with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026).

 (2)
 Do an inspection of the component interface and/or the adjacent area.

 1EFF : 301-399, 1 28-26-41Page 408 1 1 May 01/04 1 1 1CES 1

 (3) Make sure that the parts retained from the removed component are clean and in the correct condition.
 Subtask 28-26-41-420-050
 B. Installation of the Center Tank Jet Pump 157QM (158QM)
 (1)
 Remove the blanking caps from the jet pump (1).

 (2)
 Install the jet pump (1) with the washers (9) and the bolts (8).

 (3)
 Remove the blanking cap from the pipe (4).

 (4)
 Lubricate the new O-ring (2) with FUELS (Material No. 01-001) or COMMON GREASE (Material No. 04-012).

 (5)
 Install the new O-ring (2) on the pipe (4).

 (6)
 Install the pipe (4) into the jet pump (1).

 (7)
 Tighten the nut (3).

 (8)
 Remove the blanking cap from the pipe (16).

 (9)
 Put the nut (14) on the jet pump (1).

 (10)
 Install the retaining ring (15) on the jet pump (1).

 (11)
 Lubricate the new O-ring (13) with FUELS (Material No. 01-001) or COMMON GREASE (Material No. 04-012).

 (12)
 Install the new O-ring (13) on the jet pump (1).

 (13)
 Install the pipe (16) onto the jet pump (1).

 (14)
 Tighten the nut (14).

 (15)
 Install the bonding lead (6) with the bolt (5) and the nut (7) (Ref. TASK 20-28-00-912-002).

 (16)
 Install the bonding lead (10) with the bolt (11) and the nut (12) (Ref. TASK 20-28-00-912-002).

 1EFF : 301-399, 1 28-26-41Page 409 1 1 May 01/04 1 1 1CES 1 Subtask 28-26-41-410-050

 C. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Install the applicable access panel (Ref. TASK 57-17-11-400-001):

 -
FOR 157QM
 install 147AZ

 -
FOR 158QM
 install 148AZ.

 (3)
 Remove the access platform(s).

 (4) Close the applicable MLG door (Ref. TASK 32-12-00-410-001). Subtask 28-26-41-865-053
 D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1QL, 2QL, 3QL.
 Subtask 28-26-41-710-050
 E. Test
 (1) Do a test of the main transfer system (Ref. TASK 28-26-00-710-001). Subtask 28-26-41-650-052
 F. Fuel Configuration
 (1) Refuel, defuel or transfer fuel as necessary (Ref. TASK 12-11-28-650-003), (Ref. TASK 28-25-00-650-001) or (Ref. TASK 28-25-00-869-001).
 5. Close-up
________ Subtask 28-26-41-942-050
 A. Removal of Equipment
 (1)
 Remove the safety barriers.

 (2)
 Remove the warning notice(s).

 1EFF : 301-399, 1 28-26-41Page 410 1 1 May 01/04 1 1 1CES 1

 (3) Remove the ground support and maintenance equipment, the special and

 standard tools and all other items.

 1EFF : 301-399, 1 28-26-41Page 411 1 1 May 01/04 1 1 1CES 1 STRAINER - JET PUMP (220QM,221QM) - REMOVAL/INSTALLATION

________________________________________________________
 TASK 28-26-42-000-001
 Removal of the Jet Pump Strainer 220QM(221QM)
 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
　
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