Remove main bearings (4) from the cylinder block.
Remove the main bearings from the main bearing caps.
The following steps are for the installation of the
Check the condition of the main bearings. Refer to
"Guideline For Reusable Parts, Main & Connecting Rod
Bearings", Form No. SEBF8009 and SEBD0531 as
guide for checking bearing condition.
Number four main bearing in 3114 Engines and
number six main bearing in six-cylinder engines
are thrust bearings.
Clean the bearing surfaces in the cylinder block for the
main bearings. Apply clean engine oil on the upper
main bearing half. Do not put oil on the back side of the
bearing. Install the upper main bearing halves (bearings
with the oil holes) in the cylinder block. Be sure the tab
on the back side of the bearing engages with the groove
in the cylinder block.
Put clean engine oil on the crankshaft bearing journals.
Fasten lifting straps and a hoist to crankshaft (1), and
carefully install it in the cylinder block.
Clean the bearing surface of the main bearing caps.
Install the lower main bearing halves in the crankshaft
main bearing caps. Be sure the tab on the back side of
the bearing engages with the groove in the main bearing
cap. Apply clean engine oil on the lower main bearing
half. Do not put oil on the back side of the bearing.
Install the main bearing caps as follows:
Install the main bearing caps with the sequence number to
the right, 1 through 5 (for the 4 cylinder) and 1 through 7
(for the 6 cylinder), front to rear.
Put main bearing caps (2) in position in the cylinder
block with the sequence numbers in the correct
Apply clean engine oil or 6V-4876 Molykote Paste
Lubricant to the threads of the main bearing cap
mounting bolts and on the washer contact faces.
When the bolts for the rear main bearing cap are
tightened, slide the main bearing cap as far
forward as possible (toward front of engine) until
the cap is against the bolts. Holding the main
bearing cap in this position, tighten the bolts.
This will prevent interference between the rear
main bearing cap and the crankshaft rear seal
carrier, if equipped.
Install main bearing cap mounting bolts (1) and the
washers. Tighten both bolts of each main bearing
cap to a torque of 54 ± 7 N m (40 5 lb ft).
Tighten the bolts an additional 90 ± 5 degrees (1/4