Lombardini CHD series - Disassembly and Reassembly; Recommendations for Disassembling and Assembling; Recommendations for Overhauls and Tuning

- 26 - Workshop Manual LDW CHD _ cod. 1.5302.345 - 6° ed_rev. 05
4
DISASSEMBLY/REASSEMBLY
Important
To locate specic topics, the reader should refer to the index.
– Besidesdisassemblyandreassemblyoperationsthischapteralsoincludescheckingandsettingspecications,dimensions,
repair and operating instructions.
– Always use original LOMBARDINI 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 equipment 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 appropriate 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specictighteningtorquemustinitiallybefastenedatalevellowerthantheassigned
value,andthensubsequentlytightenedtothenaltorque.
RECOMMENDATIONS FOR OVERHAULS AND TUNING
Important
To locate specic topics, the reader should refer to the 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specicmeasuresdescribed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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specied
in the spare parts catalogue.
Danger - Attention
During repair operations, when using compressed air, wear eye protection.
RECOMMENDATIONS FOR DISASSEMBLING AND ASSEMBLING