Description
Lombardini 15LD Series Workshop Manual covering the 15LD225, 15LD315, 15LD350, 15LD400 and 15LD440 diesel engines. This factory publication provides technical information for trained engine technicians undertaking inspection, fault diagnosis, adjustment, dismantling, repair and reassembly.
The manual contains model identification, technical data, characteristic curves, dimensions, maintenance information and detailed engine repair instructions. Metric measurements, pressures, clearances and tightening torques are used throughout.
This is the sixth edition, revision 05, with technical information updated to 15 November 2003. Its model-specific coverage makes it suitable for professional workshops maintaining Lombardini 15LD engines installed in compatible machinery and stationary equipment.
ENGINE DISASSEMBLY AND REASSEMBLY
The principal repair section covers engine components, dimensional inspections and assembly settings. Subjects include:
- Cylinder, cylinder head and surface roughness
- Pistons, piston rings and piston protrusion checks
- Connecting rods, piston pins and alignment
- Crankshaft journals, crankpins and end float
- Camshaft journals, cam height and timing
- Valves, guides, springs, seats and valve clearances
- Automatic decompression and recoil starting equipment
- Dynamic balancer timing where fitted
- Flywheel, timing cover and drive-shaft oil seals
- Speed governor removal and adjustment
AIR INTAKE AND ENGINE EQUIPMENT
Instructions distinguish between relevant model variants and optional equipment. Coverage includes dry air cleaners for the different 15LD models, optional oil-bath air cleaners, prefilters, fuel filters, muffler, shrouding, fuel tank and rocker-cover breather arrangements.
LUBRICATION SYSTEM
Separate lubrication information is provided for the 15LD225, 15LD315 and 15LD350 group and for the 15LD400 and 15LD440 engines. Workshop subjects include:
- Lubrication circuit and internal strainer
- Oil pump inspection
- Clearance between oil-pump rotors
- Oil filter servicing
- Oil-pressure regulation valve
- Oil-pressure testing
- Full-speed and idle-speed pressure curves
- Recommended oil type and refill information
FUEL AND INJECTION SYSTEM
The fuel-system section provides repair, inspection and setting information for the model-specific fuel circuits. It covers:
- Internal and external fuel-filter arrangements
- Optional feed pump
- Injection-pump components and dismantling
- Injection-pump fitting and delivery checks
- Pump body, plunger, delivery valve and non-return valve
- Injection advance adjustment
- Static injection timing and flywheel references
- Injector inspection and calibration
- Nozzles and injector projection
- Rilsan fuel-tube removal and refitting
ELECTRICAL SYSTEM
Electrical material includes starting, charging and protection arrangements applicable to these engines:
- 12-volt electric-start diagrams
- Optional motor-protection layout
- 12-volt and 24-volt alternator information
- Alternator battery-charging curves
- Starter-motor characteristic curves
- Ignition-switch positions
- Voltage-regulator testing
- Starting-motor protection diagrams
TESTING AND ADJUSTMENT
Adjustment data supports correct engine setting after servicing or component replacement. The manual includes full-speed and idle-speed settings, injection-pump delivery adjustment, torque-adaptor settings and model-specific adjustment information for the 15LD225, 15LD315 and 15LD350.
Dimensional limits and inspection data are supplied for components such as pistons, cylinders, valve guides, camshaft journals, bearings, crankshaft journals and connecting-rod assemblies. Main tightening torques, standard bolt torques and sealant information are also included.
TROUBLESHOOTING AND REPAIR
The troubleshooting table links operating symptoms with possible faults in the fuel, lubrication and electrical systems, maintenance condition and engine settings. Symptoms covered include:
- Engine failing to start or stopping after starting
- Poor acceleration and uneven speed
- Black or white exhaust smoke
- Excessive oil consumption
- Low oil pressure
- Oil or fuel at the exhaust
- Rising engine-oil level
- Starter, battery and wiring faults
LOMBARDINI 15LD SERIES WORKSHOP MANUAL MODEL COVERAGE
- Lombardini 15LD225
- Lombardini 15LD315
- Lombardini 15LD350
- Lombardini 15LD400
- Lombardini 15LD440
MANUAL DETAILS
- Manual type: Factory workshop manual
- Publication number: 1-5302-467
- Model number: 50707
- Edition: Sixth edition
- Revision: 05
- Date of issue: June 1995
- Technical update: 15 November 2003
- Pages: 74
The Lombardini 15LD Series Workshop Manual is intended for personnel with appropriate engine-service training, workshop equipment and specialist tools. It provides the factory procedures and data needed to approach repairs systematically rather than relying on general engine information.
It is particularly useful when confirming model-specific clearances, injection settings, lubrication arrangements, electrical configurations and tightening values during workshop repair or overhaul.
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