FUEL SUPPLY SYSTEM
Pegaso 650 I.E.
4.1.1 MAINTENANCE â—† When the fuel supply pump is to be removed, see 4.3
(REMOVING THE WHOLE FUEL SUPPLY PUMP UNIT), it is advisable to make sure the pipes (1) (2) are intact and that the following are working properly: – fuel level sensor (3), see 6.12.2 (FUEL LEVEL INDICATOR); – fuel supply pump (4), see 6.6.1 (CHECKING THE FUEL PUMP). ◆ Change the delivery filter (5), see 4.5 (REMOVING THE DELIVERY FILTER).
NOTE During
this procedure, it is also advisable to wash the tank completely.
4.1.2 CHECKING THE FUEL SUPPLY For the maintenance intervals, see 2.1.1 (REGULAR SERVICE INTERVALS CHART) under: – Fuel pipes.
aWARNING Check the delivery pipe (6), return pipe (7) and relevant rapid couplings extremely carefully; the operating maximum pressure of the delivery pipe (6) is approx. 650 kPa (6.5 bar). Any fuel pipes featuring cracks or cuts must be replaced, without exception. Fuel leaking from the flange (8) might be due to a damaged O-ring (9), consequently: â—† Remove the whole fuel supply pump unit, see 4.3 (REMOVING THE WHOLE FUEL SUPPLY PUMP UNIT), check its state of repair and, where necessary, replace it. â—† Open the filler cap and make sure the vent on the tank is not clogged. Where necessary, unclog it using a compressed air jet.
NOTE For
further details see 6.6.1 (CHECKING THE FUEL PUMP).
$2!).).' 4(% &5%, 4!.+ See 2.7 (DRAINING THE FUEL TANK) for the fuel tank draining procedure.
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Release 00/2002-02