MAINTENANCE
285 MM191 (12---89)
3-28
FUEL SYSTEM -- DIESEL
DIESEL FUEL SYSTEM
The diesel fuel system is made up of five basic
components which are: fuel tank, fuel water
trap-filter, fuel pump, injection pump, and injectors.
Fuel flows from the fuel tank through the fuel water
trap-filter. The water trap-filter separates water and
impurities from the fuel. From the fuel water
trap-filter, fuel is drawn through the electric fuel pump
and pumped to the injection pump. The injection
pump pressurizes and sends fuel to the injectors.
The injectors atomize and inject proper amounts of
fuel into the combustion chamber at the proper
times. Excess fuel is returned to the fuel tank
through an overflow pipe.
FUEL WATER TRAP-FILTER
The fuel water trap-filter separates water and
impurities from the fuel. It is located next to the
engine bellhousing. The bottom portion of the unit is
the water trap. The middle portion is the filter
element.
Drain the water trap of water daily. To drain the water
trap, loosen the drain knob on the bottom of the unit.
First water, then diesel fuel will drain. Tighten the
drain knob when diesel fuel appears.
Replace the fuel filter element and clean the water
trap after every 400 hours of operation.
TO REPLACE FUEL FILTER ELEMENT
1. Stop the engine and set the machine parking
brake.
FOR SAFETY: Before leaving or servicing
machine; stop on level surface, set parking brake,
and turn off machine.
2. Open the side and top engine access doors.
3. Loosen the unit vent plug and open the water
trap drain to drain diesel fuel.
A
B
C
D
02765
FUEL WATER TRAP-FILTER
A. Filter Head
B. Vent Plug
C. Filter Element
D. Water Trap Bowl
4. Remove the filter element and the water trap
from the filter head.
5. Remove the water trap bowl from the filter
element.
6. Clean the water trap bowl.
7. Lubricate the o-ring and spin the water trap
bowl onto the new filter element.
8. Lubricate the o-ring and spin the filter element
and water trap onto the filter head.
9. Bleed the fuel lines of air as described in
TO
PRIME FUEL SYSTEM
.
10. Close the side and top engine access doors.
PRIMING FUEL SYSTEM
Priming the fuel system removes pockets of air in the
fuel lines and fuel components. Air in the fuel system
will prevent smooth engine operation.
Prime the fuel system after running out of fuel,
changing fuel filter elements or repairing a fuel
system component.
Summary of Contents for 285
Page 1: ...r 285 Sweeper Scrubber ...
Page 6: ...ABOUT THIS MANUAL 285 MM191 12 89 d ...
Page 18: ...SPECIFICATIONS 285 MM191 12 89 1 2 ...
Page 22: ...SPECIFICATIONS 285 MM191 12 89 1 6 ...
Page 24: ...OPERATION 2 2 285 MM191 12 89 ...
Page 62: ...OPERATION 2 40 285 MM191 NIL ...
Page 76: ...MAINTENANCE 285 MM191 12 89 3 14 04644 HYDRAULIC SCHEMATIC LOW DUMP MODEL ...
Page 77: ...MAINTENANCE 3 15 285 MM191 12 89 04645 HYDRAULIC SCHEMATIC MULTI LEVEL DUMP MODEL ...
Page 103: ...MAINTENANCE 3 41 285 MM191 6 90 06187 ELECTRICAL SCHEMATIC AUTO SHAKER RFS ...
Page 104: ...MAINTENANCE 285 MM191 6 90 3 42 06187 ELECTRICAL SCHEMATIC AUTO SHAKER RFS ...
Page 134: ...APPENDIX 285 MM191 12 89 4 2 ...