Kohler RD 441, Service Manual

Page: 32 / 84

- 32 - 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 specific 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 specific measures de
-
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.
–
Do not use flammable products (petrol, diesel, etc.) to degrease
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 specified in
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 .