Fuel Pump - Toro Groundsmaster 360 Service Manual

Fuel Pump

The fuel pump is attached to the frame near the fuel filter
(Fig. 71). Electrical current is available for the fuel pump
when the ignition switch is in either the RUN or START
position.
On 2WD machines, the Standard Control Module run
output LED will be illuminated when the fuel pump is en-
ergized.
On 4WD machines, the Toro Electronic Controller (TEC)
energizes the fuel pump.
IMPORTANT: When testing fuel pump, make sure
that pump is not operated without fuel.
Because diesel fuel is highly flammable, use cau-
tion when handling it. Do not smoke while testing
the fuel pump. Do not test fuel pump while engine
is hot. Make sure that there is adequate ventila-
tion when testing. Always wipe up any spilled
fuel before starting the engine.
Fuel Pump Capacity Test
1. Park machine on a level surface, lower cutting deck,
stop engine and engage parking brake. Remove key
from ignition switch. Raise and support operator seat
and hood.
2. Disconnect wire harness electrical connector from
the engine fuel stop solenoid to prevent the engine from
starting (see Fuel Stop Solenoid in this section).
3. Disconnect fuel hose (fuel pump discharge) from the
fuel/water separator inlet fitting (Fig. 71).
4. Make sure fuel hoses attached to the fuel pump, fuel
filter and fuel tank suction tube screen are free of ob-
structions.
5. Place disconnected fuel hose into a large, graduated
cylinder sufficient enough to collect 1 quart (0.95 liter).
IMPORTANT: When testing the fuel pump, DO NOT
turn ignition switch to START.
Electrical System
DANGER
6. Collect fuel in the graduated cylinder by turning igni-
tion switch to the RUN position. Allow pump to run for fif-
teen (15) seconds, then turn ignition switch to OFF.
7. Fuel collected in the graduated cylinder should be
approximately 16 fl oz (475 ml) after fifteen (15) sec-
onds.
8. Replace fuel pump if necessary.
9. Install fuel hose to the fuel/water separator. Make
sure to secure fuel hose with hose clamp.
10.Connect wire harness electrical connector to the en-
gine fuel stop solenoid.
11. Bleed the fuel system.
12.Lower and secure operator seat and hood.
Fuel Pump Specifications
Pump Capacity
Pressure
Current Draw
1. Fuel pump
2. Fuel filter
Page 5 - - 52
64 fl oz/min (1.9 l/min)
7 PSI (48.3 kPa)
2.0 amp
3
1
Figure 71
3. Pump discharge hose
Groundsmaster 360
2