Fuel Pump (Groundsmaster 3280−D) - Toro Groundsmaster 3280-D Service Manual

Fuel Pump (Groundsmaster 3280−D)
The fuel pump used on the Groundsmaster 3280−D
(diesel engine) is attached to the support bracket inside
the right side frame near the fuel/water filter (Fig. 35).
IMPORTANT: When testing fuel pump, make sure
that pump is not operated without fuel.
DANGER
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
(or implement), stop engine and engage parking brake.
2. Disconnect electrical connector from the engine fuel
stop solenoid to prevent the engine from firing.
3. Disconnect fuel pump discharge hose from the water
separator inlet fitting (Fig. 35).
4. Make sure fuel hoses attached to the fuel pump are
free of obstructions.
5. Place disconnected pump discharge 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.
6. Collect fuel in the graduated cylinder by turning igni-
tion switch ON. Allow pump to run for 30 seconds, then
turn ignition switch to OFF.
7. The amount of fuel collected in the graduated cylin-
der should be approximately 11.75 fl oz (350 ml) after 30
seconds.
8. Replace fuel pump if necessary. Install fuel hose to
the water separator.
9. Reconnect electrical connector to the engine run so-
lenoid.
10.Bleed the fuel system (see Traction Unit Operator's
Manual).
Groundsmaster 3280−D/3320
1
1. Fuel hose (from tank)
2. Fuel filter
3. Fuel pump
4. Pump discharge hose
Fuel Pump Specifications
Pump Capacity
Pressure
Max. Current
Draw
Rev. A
Page 6 − 25
3
2
7
Figure 35
5. Fuel hose (to engine)
6. Inlet fitting
7. Water/fuel filter
23.5 fl oz/min (695 ml/min)
3.3 psi (22.8 kPa)
0.9 amp
Electrical System
4
5
6