(5) If the fault continues:

 - check the primary fuel supply pipe between the right wing fuel pumps and the JET PUMP-RIGHT WING TANK (158QM) for leaks or a blockage.

 (6) Repair/replace any unserviceable pipes.

 (7) Do the test given in Para 3.A.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 301-399, ∞∞28-26-00∞∞∞∞∞∞∞∞∞∞Page 225
 Aug 01/05R
 CES

 TASK 28-26-00-810-812

 Fuel, Main Transfer System - Left Side Induced or Return Flow Blocked
 WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
 1. Possible Causes
_______________
 - JET PUMP-L, CENTER TANK (157QM)

 - STRAINER (220QM)

 - MAIN TRANSFER SYSTEM L CLACK VALVE

 - induced flow fuel pipe between the L JET PUMP STRAINER (220QM) and the L CLACK VALVE

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 28-26-00-710-001 Operational Test of the Main Transfer System
 AMM 28-26-41-000-001 Removal of the Center Tank Jet Pump 157QM(158QM)
 AMM 28-26-41-400-001 Installation of the Center Tank Jet Pump 157QM(158QM)
 AMM 28-26-42-000-001 Removal of the Jet Pump Strainer 220QM(221QM)
 AMM 28-26-42-400-001 Installation of the Jet Pump Strainer 220QM(221QM)
 AMM 28-26-44-000-001 Removal of the Main-Transfer-System Clack Valve
 AMM 28-26-44-400-001 Installation of the Main-Transfer-System Clack Valve

 3. Fault Confirmation
__________________
 A. Do the Operational Test of the Main Transfer System (Ref. AMM TASK 28-26-00-710-001).
 4. Fault Isolation
_______________
 A. If it is not possible to transfer fuel by jet pump or by gravity:
 (1) Check/replace the JET PUMP-L, CENTER TANK (157QM), (Ref. AMM TASK 28-26-41-000-001) and (Ref. AMM TASK 28-26-41-400-001).

 (2) Do the test given in Para 3.A.

 (3) If the fault continues:

 - check/replace the STRAINER (220QM), (Ref. AMM TASK 28-26-42-000-001) and (Ref. AMM TASK 28-26-42-400-001).

 (4) If the fault continues:

 - check/replace the MAIN TRANSFER SYSTEM L CLACK VALVE, (Ref. AMM TASK 28-26-44-000-001) and (Ref. AMM TASK 28-26-44-400-001).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 301-399, ∞∞28-26-00∞∞∞∞∞∞∞∞∞∞Page 226
 Aug 01/05R CES

 (5) Do the test given in Para 3.A.

 (6) If the fault continues:

 - check the induced flow fuel pipe between the L JET PUMP STRAINER (220QM) and the L CLACK VALVE for leaks or a blockage.

 (7) Repair/replace any unserviceable pipes.

 (8) Do the test given in Para 3.A.

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 301-399, ∞∞28-26-00∞∞∞∞∞∞∞∞∞∞Page 227
 Aug 01/05R
 CES

 TASK 28-26-00-810-813

 Fuel, Main Transfer System - Right Side Induced or Return Flow Blocked
 WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
 1. Possible Causes
_______________
 - JET PUMP-R, CENTER TANK (158QM)

 - STRAINER (221QM)

 - MAIN TRANSFER SYSTEM R CLACK VALVE

 - induced flow fuel pipe between the R JET PUMP STRAINER (221QM) and the R CLACK VALVE

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 28-26-00-710-001 Operational Test of the Main Transfer System
 AMM 28-26-41-000-001 Removal of the Center Tank Jet Pump 157QM(158QM)
 AMM 28-26-41-400-001 Installation of the Center Tank Jet Pump 157QM(158QM)
 AMM 28-26-42-000-001 Removal of the Jet Pump Strainer 220QM(221QM)
 AMM 28-26-42-400-001 Installation of the Jet Pump Strainer 220QM(221QM)
 AMM 28-26-44-000-001 Removal of the Main-Transfer-System Clack Valve
 AMM 28-26-44-400-001 Installation of the Main-Transfer-System Clack Valve