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KD 625-2 Workshop Manual_cod. ED0053029380_1° ed_ rev. 00
4
1
DISASSEMBLY / REASSEMBLY
RECOMMENDATIONS FOR OVERHAULS AND TUNING
Important
To locate specic topics, the reader should refer to the index.
– Before any intervention, the operator should lay out all equi-
pment and tools in such a way as to enable him to carry out
operations correctly and safely.
– The operator must comply with the specic measures descri-
bed in order to avoid errors that might cause damage to the
engine.
– Before carrying out any operation, clean the assemblies
and/or components thoroughly and eliminate any deposits
or residual material.
– Wash the components with special detergent and do not use
steam or hot water.
– Do not use ammable products (petrol, diesel, etc.) to de-
grease or wash components. Use special products.
– Dry all washed surfaces and components thoroughly with a
jet of air or special cloths before reassembling them.
– Apply a layer of lubricant over all surfaces to protect them
against oxidation.
– Check all components for intactness, wear and tear, seizure,
cracks and/or faults to be sure that the engine is in good
working condition.
– Some mechanical parts must be replaced en bloc, together
with their coupled parts (e.g. valve guide/valve etc.) as spe-
cied in the spare parts catalogue.
AIR CLEANER
Oil-bath air cleaner
Check gaskets and replace if necessary.
Check that ange weld is free of porosity or defective spots.
Carefully clean bowl and ltering element with Diesel oil and blow
through with compressed air.
Top up with engine oil to the mark.
When retting tighten nuts at 25 Nm.
See page 22 for periodic maintenance details.
RECOMMENDATIONS FOR DISASSEMBLING AND ASSEMBLING
Important
To locate specic topics, the reader should refer to the
index.
– Besides disassembly and reassembly operations this chapter
also includes checking and setting specications, dimen-
sions, repair and operating instructions.
– Always use original Kohler spare parts for proper repair
operations.
– The operator must wash, clean and dry components and
assemblies before installing them.
– The operator must make sure that the contact surfaces are
intact, lubricate the coupling parts and protect those that are
prone to oxidation.
– Before any intervention, the operator should lay out all equi-
pment and tools in such a way as to enable him to carry out
operations correctly and safely.
–
For safety and convenience, you are advised to place the
engine on a special rotating stand for engine overhauls.
– Before proceeding with operations, make sure that appro-
priate safety conditions are in place, in order to safeguard
the operator and any persons involved.
– In order to x assemblies and/or components securely, the
operator must tighten the fastening parts in a criss-cross or
alternating pattern.
– Assemblies and/or components with a specic tightening
torque must initially be fastened at a level lower than the
assigned value, and then subsequently tightened to the nal
torque.
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