10.3
Section 10
Reassembly
10
Figure 10-6. Assembled Intake Cam Shaft Details.
1. Intake Cam Shaft
2. 3 mm Diameter Pin
3. Oil Pump Assembly
4. 2.5 mm Diameter Pin
5. #1 Hole Location
6. #2 Hole Location
2. If it was removed, install and center the longer,
3 mm diameter drive pin into the upper hole
(See Figure 10-6).
3. Lightly grease the gerotor gears and install into
the oil pump, with the short drive pin fitted into
the slot of the inner gear. See Figure 10-7.
Figure 10-7. Gerotor Gears Installed in Oil Pump.
4. Lightly lubricate the ends of the oil pump outlet
seal with oil and install it into the outlet of the oil
pump. See Figure 10-8. Some models use a
“solid” seal without an oil passage, and the
crankshaft is cross drilled for lower bearing
lubrication. Both styles of outlet seals are shown
in Figure 10-9. If a new seal was ordered, make
sure it is the right one for the engine.
Figure 10-9. Oil Pump Outlet Seals.
5. Install the intake cam shaft down into the
crankcase boss. Seat the rubber oil pump outlet
seal into the machined pocket. If an “open” style
outlet seal is used, check to make sure the small
feed hole is open and aligned with the lower main
bearing oil feed hole. Use a 3/32” allen wrench,
or a light with a mirror. See Figure 10-10. Push
the steel sleeves in the pump housing down until
bottomed against the mounting surface. Install
the two M5 mounting screws. Hold the pump
outlet against the main bearing area and torque
the screws to 4.0 N·m (35 in. lb.). See Figure
10-11.
Figure 10-8. Installing Oil Pump Outlet Seal.
5
1
4
3
2
6
Pump Outlet Seal
"Open" Style
"Closed" Style
Not For Resale
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