Crankshaft Cleaning; Flywheel Inspection - Ford LSG 875 Service Manual

l-16 BASIC ENGINE
l-16
CLEANING AND INSPECTION (Continued)
CRANKSHAFT
Cleaning
Handle the crankshaft with care to avoid pos-
sible fractures or damage to the finished
surfaces. Clean the crankshaft with solvent, then
blow out all oil passages with compressed air.
Inspection
Inspect the main and connecting rod journals
for cracks, scratches, grooves or scores. Inspect
the crankshaft oil seal surface for nicks, sharp
edges or burrs that might damage the oil seal
during installation or cause premature seal wear.
A VS B = VERTICAL TAPER
CVSD= HORIZONTAL TAPER
A VS C AND B VS D---OUT-OF-ROUND
CHECK FOR OUT-OF-ROUND AT
EACH END OF JOURNAL
Measure the diameter of each journal in at
least four places to determine an out-of-round,
taper or undersize condition.
Check the fit of the clutch pilot bushing in the
bore of the crankshaft. The bushing is pressed
into the crankshaft and should not be loose. In-
spect the inner surface of the bushing for wear
or a bell-mouth condition. Check the ID of the
bushing. Replace the bushing if it is worn or
damaged or the ID is not within specifications.
Inspect the pilot bearing (ball bearing) when
so equipped, for roughness, evidence of over-
heating or loss of lubricant. Replace it if any of
these conditions are found.
. . ..\...... . . . . ,
SHING
FLYWHEEL
inspection
Inspect the flywheel for cracks, heat check, or
other damage that would make it unfit for further
service. Machine the friction surface of the
Inspect the ring gear for worn, chipped, or
cracked teeth. If the teeth are damaged, replace
the ring gear.
flywheel if it is scored or worn. If it is necessary With the flywheel installed on the crankshaft,
to remove more than 0.045 inch of stock from
check the flywheel face runout, following the
the original thickness, replace the flywheel.
procedure under Diagnosis and Testing.