(7) Do the Manual Refuel (Ref. AMM TASK 12-11-28-650-004)
(8) CTL PNL-REFUEL/DEFUEL (800VU) Internal Trouble-shooting (Ref. ASM 28-25/01) and (Ref. ASM 28-25/03)
(a) Remove the CTL PNL-REFUEL/DEFUEL (800VU) (Ref. AMM TASK 28-25-55-000-001).
(b) Do a check of and replace, if necessary, the related:
- SW-REFUEL VALVES/OPEN/NORM/SHUT, L WING TK (5QU) / SW-REFUEL VALVES/OPEN/NORM/SHUT, R WING TK (6QU) / SW-REFUEL VALVES/OPEN/NORM/SHUT, CTR TK (4QU).
(c) Do a check of the CTL PNL-REFUEL/DEFUEL (800VU) wiring between:
- the related terminal of terminal block 4001VT and terminal 1, of the SW-REFUEL VALVES/OPEN/NORMAL/SHUT (4/5/6QU) for the related tank
- the terminal 2, of the SW-REFUEL VALVES/OPEN/NORMAL/SHUT (4/5/6QU) and the related pin on the CTL PNL-REFUEL/DEFUEL (800VU) receptacle 4024VC.
NOTE : The wiring check up to terminal 3D, of the terminal block
____ 4001VT is given in Para. 4.A.
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(d) Repair all the unserviceable wiring and connectors.
(e) Install the CTL PNL-REFUEL/DEFUEL (800VU) (Ref. AMM TASK 28-25-55-400-001).
(9) Do the Manual Refuel (Ref. AMM TASK 12-11-28-650-004).
C. Procedure - In Manual Refuel (And Manual Plunger Control) The Applicable Refuel Valve Does Not Open And Fuel Cannot Be Put Into The Fuel Tank
(1) Do a check off and replace, if necessary, the applicable items as follows:
(a) The VALVE-REFUEL, L WING TK (7QU) (VALVE-REFUEL, R WING TK (8QU)) (Ref. AMM TASK 28-25-51-000-001) and (Ref. AMM TASK 28-25-51-400-001).
NOTE : The manual plunger pilot hole can become blocked. This
____ will prevent the incoming fuel pressure from moving the main valve from closed to open.
(b) The VALVE-REFUEL, CTR TK (10QU) (Ref. AMM TASK 28-25-51-000-002) and (Ref. AMM TASK 28-25-51-400-002).
NOTE : The manual plunger pilot hole can become blocked. This
____ will prevent the incoming fuel pressure from moving the main valve from closed to open.
(c) The CANISTER-REFUEL VALVE, L WING TK (19QM) (CANISTER-REFUEL VALVE, R WING TK (20QM)) (Ref. AMM TASK 28-25-52-000-001) and (Ref. AMM TASK 28-25-52-400-001).
(d) The CANISTER-REFUEL VALVE, CTR TK (88QM) (Ref. AMM TASK 28-25-52-000-002) and (Ref. AMM TASK 28-25-52-400-002).
(e) The REFUEL DIFFUSER ASSEMBLY - WING TANK (Ref. AMM TASK 28-25-42-000-001) and (Ref. AMM TASK 28-25-42-400-001).
(f) The REFUEL DIFFUSER ASSEMBLY - CENTER TANK (Ref. AMM TASK 28-25-42-000-002) and (Ref. AMM TASK 28-25-42-400-002).
(g) If the fault continues:
(h) Do the Manual Refuel (Ref. AMM TASK 12-11-28-650-004).
1_ Do a check of the fuel pipes between the applicable refuel
valve and diffuser for a blockage.
2_ Repair all the unserviceable pipes and connections.
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TASK 28-25-00-810-805
Refuel/Defuel Floodlight Failure
WARNING : OBEY THE FUEL SAFETY PROCEDURES._______
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.
1. Possible Causes_______________
R R R R R R - FLOODLIGHT-REFUEL/DEFUEL CTL PNL (32QU) - RELAY-REFUEL/DEFUEL CTL PNL DOOR POSITION (14QU) - CTL PNL-REFUEL/DEFUEL (800VU) - lamp - C/B-2QU - aircraft wiring
2. Job Set-up Information______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific multimeter
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R R R 24-67-00-810-801 28-25-00-810-817 ESPM 20-00-00 Refueling not Possible No Power to the REFUEL/DEFUEL PNL (800VU)
R IPC 282554
R AMM 12-11-28-650-003 Pressure Refuel with Automatic Control
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