buell s1 lightning '97 Manual

 

NOTE

The following paragraph numbers correspond with the num-
bered callouts in the 

 illus-

tration.

 

1.

Oil is gravity-fed from the oil tank to the gerotor-style oil
pump through a 

 

 Oil enters the 

 

and fills a cavity located under the feed pump.

 

NOTE

A complete explanation of the gerotor pump is given under

 

2.

The feed pump transfers oil from the inlet cavity through
the 

 

 to the oil filter mount.

3.

Oil flows through the 

 

 to the oil filter.

4.

Oil enters the peripheral cavity of the 

 

 passes

through the filtering medium into the central cavity of the
oil filter, and flows into the filter adapter (fitting which con-
nects filter to filter mount).

5.

Adequate oil pressure in the filter mount cavity activates
the 

 

 and shuts off the oil

pressure signal light.

6.

Oil flowing from the filter adapter opens the 

 

The check ball opens at 4-6 psi (28-41 kN/m

 

2

 

) oil pres-

sure.

7.

With the check ball open, oil flows into the 

 

8.

Oil flows through the feed galley in the crankcase to the
tappet blocks and hydraulic lifters. 

 

 intersect the main feed galley and carry oil to each

hydraulic lifter.

9.

Oil also enters an 

 

 in the gearcase

cover. Oil flow is then routed to the crankshaft area.

10. Oil enters a hole in the end of the 

 

 and

travels to the right flywheel where it is routed through the

flywheel to the 

 

 Oil is forced through the crank-

pin to properly lubricate the rod bearing assembly.

11. Oil flows up passages in the 

 

 to the rocker arm

shafts and bushings.

12. The valve stems are lubricated by oil supplied through

drilled oil holes in the 

 

13. Oil collected in the push rod areas of the cylinder heads

flows down the 

push rod covers, through drain holes in

the tappet blocks and into the gearcase.

14. Feed oil to the rocker area is returned to the crankcase

through a passage in the head and cylinder.

15. Oil collected in the sump is splash-fed to the pistons, cyl-

inder walls and flywheel components.

16. Oil collected in the sump area returns to the scavenge

section of the oil pump through a passage located in the
rear section of the sump. Oil flow to the pump is accom-
plished by the scavenging effect of the pump and by the
pressure created by the downward stroke of the pistons.

17. Return oil fills a cavity above the pump's return gears.

The return gears pump oil back to the oil tank.

18. A small amount of oil flows from the feed galley in the

right crankcase half through a restricted orifice, which
sprays the oil onto the rear intake cam gear in the gear-
case. Oil is transferred to the teeth of all the cam gears
through the gear meshing action.