Checking The Fuel Pump - APRILIA RSV mille Workshop Manual

ELECTRIC SYSTEM

6.5.2 CHECKING THE FUEL PUMP

In order to check the pump is operating properly:
N
Lift the fuel tank, see 2.8 (LIFTING THE FUEL TANK).
N
Disconnect the pump units three-way connector (1)
(coloured white).
a
CAUTION
Upon reassembly, make sure that the electric con-
nector (1) is correctly coupled.
a
CAUTION
Place a cloth under the perforated screw (2) to catch
any fuel spills.
N
Loosen the perforated screw (2) by approx. half a turn
and wait a few seconds to allow the system to depres-
surize.
a
WARNING
Fire and/or explosion hazard.
After removal, keep the fuel delivery pipe (3) in verti-
cal position, thus preventing the fuel from flowing
out.
N
Unscrew and remove the perforated screw (2), taking
the two selas (4) and (5).
Perforated screw (2) driving torque: 22 Nm (2.2 kgm).
a
WARNING
Upon reassembly, change the two gaskets (4) and (5)
and tighten the perforated screw (5) applying the pre-
scribed torque in order to ensure perfect seal. This is
essential, since the injection pressure is approx. 450
kPa (4.5 bar) and any fuel leakage would prove ex-
tremely dangerous, in fact the leaking fuel might end
up on high-temperature parts of the engine.
NOTE Have the appropriate special tools m to hand:
– aprilia part# 8140197 (perforated bolt for fuel pressure
test fuel) (6);
– aprilia part# 8140181 (fuel-oil pressure gauge-com-
pression) (7) ;
and two gaskets (8) and (9) to replace the orginal ones
(4) and (5) upon reassembly.
N
Install the following components, in the given order:
– seal (8);
– fuel delivery pipe (3);
– seal (9);
– perforated bolt (6);
– fuel-oil pressure gauge (7).
N
Power the positive (+) green (V) and negative (–) blue
(B) cables with a voltage of 12 V (d.c.) (from the pump
unit side).
N
Make sure the pump is working and produces the char-
acteristic humming sound and check the pressure
gauge gives a supply pressure reading of at least 350
kPa (3.5 bar).
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- 00
RSV mille
Release 00/2002-10