Kohler 4EOZ Service page 87

Figure 10-61 Bush Bearing
Main Bearing Cover
1. Using a hydraulic press and socket, install the ball
bearing in the main bearing cover until the outer
race is against its seat. See Figure 10-62.
1. O-Ring between the crankcase and cover
2. Bearing snap ring
3. Oil seal
4. Angle ring
5. Elastic washers
6. O-Ring under the angle ring
7. Bearing
Figure 10-62 Main Bearing Cover Assembly
TP-6137 5/03
1
2
3
4
Note: The cover installs correctly on the crankcase by
5
6
7
2
1
Figure 10-63 Main Bearing Cover
2. Lock the bearing's outer race with the snap ring in
the cover.
3. Set the crankshaft on the board of a press and
carefully clean the tapered surface of the bearing
seat.
4. Put the main bearing cover on the crankshaft so
that the snap ring is towards the flywheel side.
5. Using a socket, press the main bearing cover on
the crankshaft until the inner race bearing is in its
seat, against the shoulder of the crankshaft.
6. Lubricate the oil seal lip and the tapered surface of
the crankshaft and assemble the oil seal on the
cover. Do not use grease.
7. Put the O-ring between the crankcase and cover
and tap lightly with a soft-faced hammer to seat the
cover.
8. Tighten the nuts to the appropriate torque. See
Section 1.5.
9. Install on the outside of the main bearing cover the
O-ring, the angle ring, and the two elastic washers
as shown in Figure 10-62.
turning it in the correct position.
Section 10 Generator and Engine Disassembly/Reassembly 75