Perkins 1106D Disassembly And Assembly page 150

150
Disassembly and Assembly Section
Note: The upper main bearing shell has a groove
and two oil holes.
Illustration 305
4. For number six main bearing, ensure that the
two thrust washers (4) are clean and free from
wear or damage. If necessary, replace the thrust
washers. Lubricate the thrust washers (4) with
clean engine oil. Slide the thrust washers (4) into
position between the crankshaft and the cylinder
block. Ensure that the locating tab is correctly
seated in the cylinder block.
Illustration 306
5. Install the lower main bearing shell (3) into the
main bearing cap (2). Ensure that the locating tab
for the lower main bearing shell is correctly seated
into the slot in the bearing cap.
Note: The lower main bearing shell is a plain bearing
that has no oil holes.
Illustration 307
6. Lubricate the crankshaft journal and the lower
main bearing shell with clean engine oil. Install the
main bearing cap (2) to the cylinder block.
Note: Ensure the correct orientation of the main
bearing cap. The locating tab for the upper and the
lower bearing should be on the same side of the
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engine.
7. Lubricate the threads of the setscrews (1) with
clean engine oil. Lubricate the underside of the
heads of the setscrews (1) with clean engine oil.
8. Install the setscrews (1) to the main bearing cap
(2). Evenly tighten the setscrews in order to pull
the cap (2) into position. Ensure that the cap is
correctly seated.
Note: Do not tap the main bearing cap into position
as the bearing shell may be dislodged.
9. Tighten the setscrews (1) to a torque of 80 N·m
(59 lb ft).
Turn the setscrews (1) through an additional 90
degrees. Use Tooling B to achieve the correct
final torque.
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