Description
Volvo Penta TMD40a engine
Volvo Penta TMD40a engine, 
The Volvo Penta TMD40A is a6-cylinder, turbocharged marine diesel engine that produces approximately 125-136 hp at 3600 rpm. It features fresh-water cooling with a heat exchanger, a compact design, and was built for durability and fuel efficiency in applications like leisure boats and workboats. Key features include a turbocharger and oil-cooled pistons for reliability.
The Volvo Penta TMD40A is a6-cylinder, turbocharged marine diesel engine that produces approximately 125-136 hp at 3600 rpm. It features fresh-water cooling with a heat exchanger, a compact design, and was built for durability and fuel efficiency in applications like leisure boats and workboats. Key features include a turbocharger and oil-cooled pistons for reliability. Engine specifications
- Engine type: 6-cylinder, 4-stroke, turbocharged diesel
- Power: 125-136 hp at 3600 rpm
- Cooling: Fresh-water cooled with a heat exchanger
- Turbocharger: Turbocharged and freshwater-cooled
- Pistons: Oil-cooled pistons
- Cylinders: Replaceable wet-type cylinder liners
- Applications: Suited for both heavy-duty and relaxed trips
- Compact design: Smaller and lighter than many competitors of the same output
Key features: Volvo Penta TMD40a engine
- Quiet operation: A newly designed air filter and a water-jacketed exhaust bend contribute to low noise levels.
- Reliability: Piston cooling and corrosion protection (freshwater-cooled turbo and exhaust) improve durability.
- Maintenance: Features an easily accessible seawater filter and a removable expansion tank for simpler maintenance.
- Transmission: Various reverse gear options are available, such as the MS3 and Borg Warner series.
- Instrumentation: An instrument panel was available, typically including a tachometer, temperature gauge, oil pressure gauge, and voltmeter.
Key Specifications
| Attribute | Detail |
|---|---|
| Engine Type | Six-cylinder, 4-stroke, in-line, turbocharged marine diesel with swirl chambers. |
| Power Output | Typically around 125-136 hp (96 kW) at 3600 rpm. |
| Fuel System | Indirect injection with a rotor-type injection pump and mechanical governor. |
| Cooling System | Thermostat-controlled fresh-water cooling with a heat exchanger. |
| Weight | Approximately 285 kg (630 lb) with MS3 reverse gear. |
| Electrical System | 12-volt system with glow plugs for starting. |
Common Issues & Maintenance
- Oil/Coolant Contamination : Water in the oil can indicate a compromised oil cooler or head gasket failure. Checking the oil cooler’s internal seals is recommended for preventative maintenance.
- Fuel System : Clogged fuel filters, air locks in the fuel lines, or a failing fuel pump can cause starting difficulties or power loss.
- Corrosion : Marine engines are prone to corrosion. Inspecting zinc anodes and ensuring the exhaust system is in good condition is vital to prevent internal damage.
frequently asked questions
Here are frequently asked questions about the
Volvo Penta TMD40A marine diesel engine, covering common issues, maintenance, and operation.
General Operation & Maintenance
- What is the normal operating temperature range?
The normal operating temperature is around 85°C (185°F) . Temperatures over 90°C are considered slightly high, and over 97°C will trigger an overheat alarm. - What type of oil should I use?
A high-quality diesel oil, such as 15W40 , is typically recommended . Refer to the official Volvo Penta technical data for specific recommendations for your engine model.
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