(b) The VALVE-PRESSURE HOLDING (218QM) (VALVE-PRESSURE HOLDING (219QM)) (Ref. AMM TASK 28-16-43-000-001) and (Ref. AMM TASK 28-16-43-400-001).

 (2) Do the test given in Para. 3.B.

 (3) If the fault continues, do a check of the fuel recirculation (cooling) pipe for damage or blockage. Replace, if necessary (Ref. AMM TASK 28-00-00-000-001) and (Ref. AMM TASK 28-00-00-400-001).

 (4) Do the test given in Para. 3.B.

 「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, ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 211
 May 01/05R
 CES  FUEL RECIRCULATION - COOLING - TASK SUPPORTING DATA

___________________________________________________
 1. General
_______
 The diagrams that follow are to help you do the trouble-shooting tasks.

 For the Fuel Recirculation - Cooling:

 - Physical Layout R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 (Ref. Fig. 301)
 **ON A/C 301-399,

 (Ref. Fig. 301A)
 **ON A/C ALL

 - Block Diagram R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 (Ref. Fig. 302)
 **ON A/C 301-399,

 (Ref. Fig. 302A)

 「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 : ALL ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 301
 Aug 01/05 CES

 Fuel Recirculation - Cooling, Physical Layout
 Figure 301 (SHEET 1)

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 302
 201-299, 401-499, Aug 01/05 CES

 Fuel Recirculation - Cooling, Physical Layout
 Figure 301 (SHEET 2)

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 303
 201-299, 401-499, Aug 01/05 CES

R Fuel Recirculation - Cooling, Physical Layout R Figure 301A (SHEET 1)
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 301-399, ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 304
 May 01/04 CESR Fuel Recirculation - Cooling, Physical Layout R Figure 301A (SHEET 2)

 「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, ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 305
 May 01/04 CESR Fuel Recirculation - Cooling, Physical Layout R Figure 301A (SHEET 3)

 「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, ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 306
 May 01/04 CES

 Fuel Recirculation - Cooling, Block Diagram
 Figure 302

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 307
 201-299, 401-499, Aug 01/05 CES

R Fuel Recirculation - Cooling, Block Diagram R Figure 302A
 「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, ∞∞28-16-00∞∞∞∞∞∞∞∞∞∞Page 308
 May 01/04 CES

 MAIN FUEL PUMP SYSTEM - FAULT ISOLATION PROCEDURES
__________________________________________________
 TASK 28-21-00-810-801
 Fuel Pumps - Left Wing Tank Fuel Pump No. 1 (Outer) 21QA System Malfunction
 WARNING : OBEY THE FUEL SAFETY PROCEDURES._______
 WARNING : DO NOT CLOSE AN OPEN (TRIPPED) CIRCUIT BREAKER RELATED TO A_______ FUEL-PUMP. IF YOU CLOSE THE CIRCUIT BREAKER, THERE IS A RISK: - OF FIRE OR OF AN EXPLOSION - OF DAMAGE TO THE AIRCRAFT WIRING AND STRUCTURE. 
R R R R R  WARNING : WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST_______ EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT, E.G. EN50-020, UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.
　
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