CRANKSHAFT MAIN BEARINGS
REMOVE AND INSTALL CRANKSHAFT
Dial Test Indicator
a) remove oil pan
Check each main bearing cap for its location on
the engine. Each cap has a number which
gives the location of that cap. Make a note that
the number on each cap is toward the front of
the cylinder block.
Remove the bolts and washers that hold main
bearing cap (2) in place. Remove the bearing
cap and the lower half of the main bearing.
Remove bearing (1) from the bearing cap.
When the No. 1 main bearing cap is
removed or installed use tool (C) to
remove and install the bolts that hold
Turn the crankshaft until tool (A) can be
installed in the oil hole in the crankshaft journal.
Install tool (A). Turn the crankshaft in the
direction which will push the upper main bearing
out, tab end first.
If the crankshaft is turned in the
wrong direction, the tab of the
bearing will be pushed between the
crankshaft and the cylinder block.
This will cause damage to the
crankshaft and block.
Put clean engine oil on the lower bearings.
Install lower bearings in the bearing caps.
Put clean engine oil on the upper bearings (the
bearing with the oil hole). Install upper bearings
in the cylinder block with tool (A).
NOTE: Be sure the tab on the back of
the bearings fits in the groove of the
caps and cylinder block.
When bearing caps are installed,
make sure the number on the side of
the cap is next to and respective with
the number on the engine block.
checked the crankshaft will have to
be lifted up against the upper halves
of the main bearings and held to get
a measurement with wire (B). The
wire will not hold the weight of the