Service manual

8. Using wooden V-blocks, support the crankshaft on
the front and rear journals.
9. Use the J 7872 in order to measure crankshaft
journal runout.
Refer to
Engine Mechanical Specifications (5.0 L)
or Engine Mechanical Specifications (5.7 L) .
10. Measure the crankshaft end play.
Important: In order to properly measure the crankshaft
end play, the crankshaft, the crankshaft bearings,
the crankshaft bearing caps, and the fasteners must
be installed into the engine block, and the bolts
and studs tightened finger tight.
10.1. Firmly thrust the end of the crankshaft,
first rearward then forward. This will line
up the rear crankshaft bearing and
the crankshaft thrust surfaces. Tighten the
cap bolts and studs. Refer to
Engine
Mechanical Specifications (5.0 L)
or Engine Mechanical Specifications
(5.7 L)
.
10.2. With the crankshaft pushed forward, insert
a feeler gage between the crankshaft and
the crankshaft bearing surface, then
measure the clearance. Refer to
Engine
Mechanical Specifications (5.0 L)
or
Engine Mechanical Specifications (5.7 L) .
10.3. Turn the crankshaft to check for binding. If
the crankshaft does not turn freely, loosen
the crankshaft bearing bolts and studs,
one crankshaft bearing cap at a time, until
the tight crankshaft bearing is located.
Burrs on the crankshaft bearing cap
or engine block, foreign matter between the
crankshaft bearing and the crankshaft
bearing cap or the engine block, or a faulty
crankshaft bearing could cause a lack of
clearance between the crankshaft and
crankshaft bearing.
35210
188467
Engine Engine Mechanical - 5.0L and 5.7L 6-53
2002 - Unit Repair (May 25, 2001)