Section 9. Inspection And Reconditioning - Kohler Command Pro CV960 Service Manual

Inspection and Reconditioning
This section covers the operation, inspection, and
repair/reconditioning of major internal engine
components. The following components are not
covered in this section. They are covered in sections of
their own:
Air Cleaner, Section 4
Carburetor & External Governor, Section 5
Ignition, Charging & Electric Starter, Section 7
Clean all parts thoroughly. Only clean parts can be
accurately inspected and gauged for wear or damage.
There are many commercially available cleaners
that will quickly remove grease, oil, and grime from
engine parts. When such a cleaner is used, follow the
manufacturer's instructions and safety precautions
carefully. Make sure all traces of the cleaner are
removed before the engine is reassembled and placed
into operation. Even small amounts of these cleaners
can quickly break down the lubricating properties of
engine oil.
Use an aerosol gasket remover, paint stripper, or
lacquer thinner to remove any old gasket material.
Apply the solvent, allow time for it to work, and
then brush the surface with a brass
all old material is removed, clean the surface with
isopropyl alcohol, lacquer thinner, or aerosol electrical
contact cleaner. Do not scrape the surfaces, as any
scratches, nicks, or burrs can result in leaks. See
Service Bulletin 252 for further information.
Refer to A Guide to Engine Rebuilding (TP-2150-A)
for additional information. Measurement Guide
(TP-2159-B) and Engine Inspection Data Record
(TP-2435) are also available; use these to record
inspection results.
Section 9
Camshaft
Inspection and Service
chipped, or missing teeth. Replacement of the
exist.
Crankshaft
Inspection and Service
are badly worn, chipped, or some are missing,
grooving, etc. Replaceable bearings are used in the
not replace the bearings unless they show signs of
is no evidence of scoring, grooving, etc., on the races
or bearing surfaces, the bearings can be reused.
necessary.
Inspect the crankpin for score marks or metallic
pickup. Slight score marks can be cleaned with
crocus cloth soaked in oil. If the wear limits, as stated
regrind the crankpin to 0.25 mm (0.010 in.) undersize.
If reground, a 0.25 mm (0.010 in.) undersize
connecting rod (big end) must then be used to achieve
proper running clearance. Measure the crankpin for
size, taper, and out-of-round.
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