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 TM5-241O-237-34
3-10. CRANKSHAFT ASSEMBLY - REPAIR/REPLACE (Cont'd)
f. Installation
Compressed air used for cleaning
purposes will not exceed 30 psi.
Use only with effective chip
guarding and personal protective
equipment.
(1) Clean main bearing surfaces in
the cylinder block (11) and the
bearing caps (9) with an approved
cleaning solvent (See page 2-29).
Dry surfaces thoroughly with low
pressure air (30 psi or less).
(2) If anew or altered crankshaft
(10) is installed, new main
bearings must be installed. If
crankshaft was ground to a
smaller size, the correct new
smaller size bearings must be
used. If a crankshaft journal was
polished, new bearings must be
installed for that journal. If
all journals were polished,
install all new bearings. See
CAUTION
It is recommended that nylon
straps, or equivalent, be used
to secure the crankshaft on the
floor jack to prevent damage to
the machined surfaces of the
crankshaft. Be sure that nothing
metallic comes in contact with
the machined surfaces.
(3) Raise the floor jack to install
the crankshaft (10) into correct
location in cylinder block (11).
Check that timing marks (A, B,
and C) are aligned as shown.
Position the crankshaft main
bearing journals firmly against
the upper main bearing halves.
3-48
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