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Workshop Manual KD 441_cod. 1.5302.865_2
nd
ed_ rev. 01.
5
RECOMMENDATIONS FOR OVERHAULS AND CHECKING
– Information is given in a logical order in terms of timing and
sequence of operations. The methods have been selected,
tested and approved by the manufacturer’s technical ex-
perts.
– This chapter describes procedures for checking, overhauling
assemblies and/or individual components.
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.
– Theoperatormustcomplywiththespecicmeasuresde-
scribed 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.
– Donotuseammableproducts(petrol,diesel,etc.)todegrease
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
theircoupledparts(e.g.valveguide/valveetc.)asspeciedin
the spare parts catalogue.
Shaft seals
– Clean the shaft thoroughly and make sure that it is not
damaged or scored or become oval-shaped in the areas of
contact with the seals.
– Lubricate the seal lips, and pointing them in the right direc-
tion, place them in their seat using a special pad.
–
Do not use a hammer directly on the gaskets during assembly,
to avoid damaging them.
– Be careful not to damage the gaskets while joining them to the
shaft.
OVERHAULS AND CHECKING
Danger - Attention
During repair operations, when using compressed air, wear eye protection.
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