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Volvo Penta AD31P Engine

The Volvo Penta AD31P is a 2.4 L 4-cylinder turbocharged engine rated at 3800 rpm, producing up to 96 kW. It powers generator sets from Volvo Penta, including the AD31.

Also known as: Volvo Penta AD31P

2.4 L

Displacement

Cylinders

3800 rpm

Rated speed

96 kW

Gross power

On this pageSpecs Generator sets Maintenance FAQ Service intervals Torque & specs Fluids Procedures

Engine specifications

Displacement	2.4 L
Cylinders	4
Aspiration	turbocharged
Rated speed	3800 rpm
Gross power	96 kW

Generator sets powered by this engine

Volvo Penta AD31

How to read your Volvo Penta engine serial & model number →

Maintenance schedule

Item	Spec	Part #
Air filter	replaceable air inlet filter	—
Fuel filter	fine filter with water separator	—
Oil filter	replaceable full-flow oil filter	—
Battery	12V corrosion-protected electrical system, complete with instrumentation, 14V/60A marine alternator, charging regulator with battery sensor for voltage drop compensation, the alternator is prepared for a bulkhead-mounted double-diode set which automatically distributes the charge current to two separate battery circuits	—
Belt	not specified	—
Coolant	thermostatically regulated freshwater cooling, tubular heat exchanger with separate transparent expansion tank, gear-driven seawater pump with rubber impeller, coolant system prepared for hot water outlet, seawater strainer	—
Oil	full-flow oil filter	—
Spark plug	not specified	—

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Service intervals

Item	Action	Hours	Months	Notes
Premistoppa di gomma	Lubricate	200 hr	12 mo	Ingrassaggio ogni 200 ore oppure una volta l'anno
Rubber pakkingbus (45.40)	Lubricate	200 hr	12 mo	Doorsmeren; elke 200 uren of éénmaal per jaar

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Service specifications

Type	Item	Value	Unit	Condition
Clearance	Afstand tussen lagerpunten (45.40)	1500	mm	mag niet meer bedragen
Clearance	Diametertolerantie rubber pakkingbus (45.40)	+0,5 – 0,3	mm
Clearance	Distanza massima tra le boccole	1500	mm
Clearance	Schroefastolerantie (schroefas compleet, 45.34)	H9 (+0,0 - 0,052)	mm
Clearance	Schroefastolerantie (schroefaskoppeling met klem, 45.32)	H9 (+0,0 – 0,052)	mm
Clearance	Tolleranza del diametro dell'asse elica	h9 (+0,0 -0,052)	mm
Other	Blad/oppervlakteverhouding zeilbootschroef (45.46)	0,23		bij een maximale bladbreedte van 1/4 van de schroefdiameter
Other	Spoed/slip schroef	70–90%		schroef legt 70–90% van de spoed af; resterende 10-30% is slip

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Recommended fluids

Fluid	Grade	Standard	Ambient	Capacity	Notes
Grease		Volvo Penta original grease			Grasso originale Volvo Penta per assi elica, part no 1141644-3

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

Zinkanode controleren en vervangen maintenance

⚠ Zink- en magnesiumanoden mogen niet worden gelakt, omdat zij anders hun werking verliezen.

⚠ Niet voor bronzen klapschroeven.

Controleer of meer dan 50% van de anode is weggevreten.
Vervang de anode indien meer dan 50% is weggevreten.
Schraap het contactvlak schoon voor een goed contact.
Lak de zink- en magnesiumanoden niet.

Schroefdiameter meten operation

Meet de afstand van het hart van de schroefnaaf tot aan het uiteinde van één van de bladen.
Vermenigvuldig de uitkomst met twee.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

What is the displacement of the Volvo Penta AD31P?

The Volvo Penta AD31P has a displacement of 2.4 liters with 4 cylinders.

Which generators use the Volvo Penta AD31P engine?

The Volvo Penta AD31P powers 1 generator set(s), including Volvo Penta AD31.