8
INFORMATION ABOUT OVERHAULING
EN 94
8 INFORMATION ABOUT OVERHAULING
8.1 Recommendations for overhauls and tuning
• The information is laid out in sequence, according to operational requirements, and the intervention
methods have been selected, tested and approved by the manufacturer's
technicians.
• This chapter describes procedures for checking, overhauling and tuning units and/or individual
components.
NOT E: To easily locate specific topics, the reader should refer to the analytical index or chapter index.
• Before any intervention, the operator should lay out all equipment 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 described in order to avoid errors that might
cause damage to the engine.
• Before carrying out any operation, clean the units and/or components thoroughly and eliminate any
deposits.
• Do not wash the components with steam or hot water. Use suitable products only.
• Do not use flammable products (petrol, diesel, etc.) to degrease or wash components. Use suitabl
e
products only.
• Apply a layer of lubricant over all surfaces of all disassembled components to protect them against
oxidation.
• Check the integrity and state of wear of all disassembled components in order to ensure good
working condition of the engine.
• When indicated, some components are to be replaced in pairs or together with other parts (e.g.
crankshaft half-bearings/connecting rod, piston complete with rings and gudgeon pin, etc.).
• When indicated, some grinding operations are to be carried out in series (e.g. grinding of cylinders,
crankpins, journals, etc.).
8.2 Crankcase
U
se a pipe cleaner in access points
A, B, C, D, E
to clean the oil ducts of crankcase
G
. Use compressed
air to eliminate any residues.
Replace and assemble the conical cap in hole B (B1 if present - tightening torque at 30 Nm) and caps in
holes D, after having performed cleaning operations.
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