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3.11
ENGINE
3
Oil Pump Priming Procedure
NOTE: The oil pump priming procedure should be
performed as a safeguard against loss of pump
prime when repairing oil tank, lines or engine.
1.
Clamp or pinch off vent line approximately 2” from oil
tank, between the end of oil tank vent fitting and the vent
line.
2.
Run engine for 5-10 seconds at IDLE.
IMPORTANT: Do not raise rpm or run for more than 10
seconds. Damage to tank may result.
3.
Shut off engine. Remove the vent line clamp. The oil pump
should now be properly primed and ready for field
operation.
NOTE: If the system is primed properly you should
hear some air release. If you do not, the system has
not primed. Repeat the process if necessary.
Oil Flow - ES50PL
The chart on Page 3.12 describes the flow of oil through the
ES50PL engine. Beginning at the oil tank, the oil flows through
a screen fitting in the bottom of the tank and into the oil supply
hose. The feed side of the oil pump draws oil through the hose
and into the crankcase oil gallery, pulling the oil through another
passage to the one way valve. When the engine is off, the one
way valve closes to prevent oil in the tank from draining into the
crankcase. Oil is then pumped to the oil filter. If the oil filter is
obstructed, a bypass valve contained in the filter allows oil to
bypass the filter element.
At this point, the oil is diverted in three directions. Oil is
supplied to the crankshaft through a PTO side oil passage,
lubricating the crank bearings, crank pin, piston, cylinder and
connecting rod bearings. A delivery pipe supplies oil to the top
of the cylinder head and the transmission main shaft. Oil is
delivered though the pipe and enters the camshaft through the
cam support oil gallery. The camshaft journals are lubricated
through holes in the camshaft. Oil lubricates the cam chain
sprockets and cam lobes via an oil jet, which drains to the
crankcase.
Another oil path flows from the delivery pipe to the transmission
main shaft. Here it passes through the oil gallery to lubricate the
transmission gears, clutch and bearings.
Residual oil from the lubrication of the crankshaft and
connecting rod indirectly lubricates the cylinder wall, piston,
rings, connecting rod small end bearing, piston pin, oil/water
pump drive gears, cam chain, drive sprocket, and Magneto end
crankshaft main bearing.
A one–way valve is located on the right front (PTO) side of the
crankcase. This valve prevents oil in the tank from draining into
the engine crankcase when the engine is off. The valve
mechanism consists of a plunger, return spring, guide plug, and
sealing washer. When the engine is running, oil pressure lifts the
plunger off the seat, allowing oil flow. When the engine is off,
spring pressure forces the plunger against the oil passage seat,
preventing oil flow from the tank to the sump. The one–way
valve requires very little maintenance. If engine oil drains into
the crankcase when the engine is off, inspect the valve sealing
surface for debris or damage. Inspect the return spring for
distortion or damage.
Содержание Outlaw 500
Страница 1: ...Fix it like a Pro...
Страница 3: ......
Страница 47: ...NOTES MAINTENANCE 2 32 RepairPro Service Manual...
Страница 81: ...3 34 ENGINE Outlaw Cam Timing Exploded View RepairPro Service Manual...
Страница 149: ...NOTES BODY STEERING SUSPENSION 5 40 RepairPro Service Manual...
Страница 195: ...NOTES ELECTRICAL 7 22 RepairPro Service Manual...
Страница 200: ...8 1 WIRE DIAGRAM OUTLAW 500...
Страница 201: ...8 2 WIRE DIAGRAM OUTLAW 500 RepairPro Service Manual...
Страница 202: ...8 3 WIRE DIAGRAM OUTLAW 500...