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167
FUEL SYSTEM
COMPONENTS
8
COMPONENTS
The fuel system includes the following compo-
nents:
•
Fuel Lift Pump
•
Fuel Filter
•
Vapor Separator
•
Fuel Circulation Pump
•
Fuel Supply Manifolds
•
Fuel Injectors
•
Fuel Return Manifolds
Fuel Lift Pump
The fuel lift pump is a mechanical, pressure-pulse
pump. The diaphragm of the pump is driven by
two pulse hoses that connect to the cylin-
der/crankcase assembly.
Fuel lift pump pulse hose locations:
•
Front mounted pump
: cylinders 3 and 6
•
Side mounted pump
: cylinders 2 and 5
Vacuum from the fuel lift pump pulls fuel from the
fuel tank. Once fuel reaches the pump, internal
pump pressure forces the fuel from the pump
through the fuel filter and into the vapor separator.
Fuel Filter
The water separating fuel filter protects the vapor
separator and the high-pressure components of
the fuel system from water and contaminants.
Refer to
on p. 72 for service frequency.
Vapor Separator
The vapor separator:
•
Serves as a water-cooled fuel reservoir to accu-
mulate incoming fuel from the fuel lift pump and
from the fuel return manifold
•
Contains a float controlling the venting of fuel
vapors
•
Contains a fuel pressure regulator for the high
pressure fuel system.
The vapor separator is serviced as an assembly
and includes the fuel circulation pump.
1.
Front mounted pump
2.
Side mounted pump
006989
2
1
1.
Filter
005022
Vapor Separator Assembly
1.
Circulation pump
004186
1
1
Содержание E250DHLSCS
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Страница 186: ...184 FUEL SYSTEM NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 191: ...OILING SYSTEM OIL SUPPLY DIAGRAMS V6 189 9 006870 Rear View 6 4 5 3 Top View 1 2...
Страница 192: ...190 OILING SYSTEM OIL RECIRCULATION DIAGRAMS V6 OIL RECIRCULATION DIAGRAMS V6 004111a 2 4 6 1 3 5...
Страница 212: ...210 COOLING SYSTEM NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 216: ...214 POWERHEAD SERVICE CHART Taper Pin Tool Hole for Storage Scale FULL SIZE...
Страница 242: ...240 POWERHEAD POWERHEAD VIEWS POWERHEAD VIEWS Port Hose Routings 006972...
Страница 243: ...POWERHEAD POWERHEAD VIEWS 241 11 Starboard Hose Routings 006952...
Страница 244: ...242 POWERHEAD POWERHEAD VIEWS Port 006993...
Страница 245: ...POWERHEAD POWERHEAD VIEWS 243 11 Starboard 006973...
Страница 246: ...244 POWERHEAD POWERHEAD VIEWS Front 006974...
Страница 247: ...POWERHEAD POWERHEAD VIEWS 245 11 Rear 006975...
Страница 248: ...246 POWERHEAD POWERHEAD VIEWS Top 006957...
Страница 252: ...250 MIDSECTION SERVICE CHART 004117...
Страница 314: ...312 GEARCASE COUNTER ROTATION NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 346: ...344 TRIM AND TILT NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
Страница 348: ...S 2...
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Страница 387: ...A B C 5 1 2 3 6 4 5 1 2 3 6 4 5 1 2 3 6 4 DRC6165R MWS Instrument Wiring Harness 1 2 5 1 2 3 6 7 4 8 A B C...
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