9-6
SECTION 9: LUBRICATION SYSTEM
11. Install the oil pump outer rotor onto the two drive pins
at the of the camshaft (see Figure 9-12).
12. Carefully install the crankcase cover. Align the cover with
dowel pins on the crankcase flange, as well as with the
crankshaft, camshaft and balancer. Make sure the cover
gasket is on. Rotate the crankshaft to align the oil pump
inner and outer rotors. The cover should fall easily into
place. DO NOT FORCE.
Figure 9-12. Location of Oil Pump Drive Pins
13. Install the crankcase cover bolts and tighten (see Figure
9-13). Refer to Section 15 for torque specifications.
Figure 9-13. Crankcase Cover Bolt Tightening Sequence
14. After torquing crankcase cover bolts, make sure the crank-
shaft turns freely.
CRANKCASE COVER INSTALLATION (SMALL FRAME ENGINE):
Install the crankcase cover as follows:
1. Rest the crankcase on its side with the crankcase cover
flange facing upward.
2. Check that the valve tappets, crankshaft, connecting rod
assembly, and camshaft have been properly installed into
the crankcase.
3. Make sure the timing marks on the crankshaft and cam
-
shaft gears are properly aligned. See Figure 9-15.
4. Place the crankcase cover gasket onto the crankcase
flange.
5. Apply engine oil to the crankshaft and camshaft jour
-
nals.
6. Apply engine oil to the crankshaft and camshaft bores in
the crankcase cover.
7. Insert tubular end of oil pickup into its crankcase cover
bore. The pickup screen must face downward and the
pickup must be parallel to the crankcase base.
NOTE: When the crankcase cover is installed, the groove
at tip of pickup must mate with a cast protrusion on the
crankcase floor. The pickup must be properly positioned
to ensure it will be retained by the cast protrusion after
the cover has been installed.
8. Make sure the camshaft bore in crankcase cover and the
oil pump's inner rotor shaft have been coated with oil.
9. Apply a small amount of general purpose grease to the oil
pump inner rotor. The grease will help prevent that rotor
from dropping out when the cover is inverted for installa-
tion.
10. Install the oil pump inner rotor over the rotor shaft and
into the camshaft bore.
11. Install the oil pump outer rotor onto the two drive pins at
the end of the camshaft (see Figure 9-15).
0C1103Arev0.indd 6 6/22/2006 10:51:19 AM
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