Volvo Penta D2-60 Inboard Engine HS25A Gearbox Package

Description

Experience vibration-free shaft propulsion with the Volvo Penta D2-60 Inboard Package during heavy ocean passage-making. Generating 60BHP at 3,000 RPM, this turbocharged 4-Cylinder 2.2L marine diesel pairs with an HS25A 8-Degree down-angle hydraulic transmission. Oil pressure actuates internal clutch packs for effortless gear engagement. Operators must monitor hydraulic transmission fluid levels and swap internal spin-on filters at specified service intervals.

ASTM gray iron provides maximum structural stiffness for the monobloc engine block and parent-bore cylinder walls. A rugged 12V negative ground electrical arrangement features a 12V 2.0 kW starter motor alongside a marine-grade 12V 115A alternator equipped with an intelligent battery charging sensor. The complete engine package registers 507 lbs dry weight before hydraulic fluids. Installation stance covers 34.4in length, 21.4in width, and 24.0in height, with a 1.72 US gal lube oil reservoir.

Key Features of Volvo Penta D2-60 HS25A

Commercial charter skippers buy Volvo Penta D2-60 inboard package transmissions to secure hydraulic shifting and optimized shaft angles in crowded hull spaces. This high-grade unit powers luxury cruising yachts and passenger launches demanding silence under propulsion.

• HS25A hydraulic marine gearbox incorporates an 8-Degree down-angle to align with flat propeller shaft installations.
• Hydraulic multi-disc clutch packs eliminate mechanical gear clunk during helm forward and reverse shifts.
• Turbocharged charge-air cooler system maximizes intake oxygen density for clean fuel burn and high torque.
• Cam-driven mechanical inline unit injection pumps deliver uniform fuel atomization without delicate electronic sensors.
• Tubular heat exchanger bundle provides efficient closed-circuit cooling through raw seawater heat dissipation.
• Sound-insulated induction cover suppresses high-frequency air inlet whistle under heavy turbo boost loads.
• EPA Tier 3 compliance assures adherence to global harbor smoke and exhaust emission regulations.

Dynamometer Output Hydraulic Tolerances

Dynamometer tests record 55BHP continuous shaft power at 2,800 RPM and 60BHP intermittent power at 3,000 RPM. Turbo boost reaches 1.1 bar over atmospheric baseline, holding exhaust gas temperatures below 950°F at the mixing elbow. The HS25A hydraulic gearbox maintains 280 PSI clutch control pressure, preventing clutch plate slippage under maximum load spikes. Crankshaft journal runout measures within 0.0005in TIR. Lube oil pressure runs at 60 PSI at 180°F coolant temperature, supporting safe continuous operation at hull angles up to 30°.

Helm Operation Scheduled Maintenance Tasks

Hydraulic actuation drops helm lever effort to an ultra-light 3 lbs push-pull stroke without cable binding. Coastal launch operators select this hydraulic package for multi-station vessels, but boatbuilders must not specify this down-angle transmission for deep V-hulls requiring steep drop angles exceeding 8-Degree shaft centerlines or lightweight surf craft.

• Inspect transmission oil cooler lines and replace ATF hydraulic fluid every 500 operating hours.
• Drain engine crankcase oil and install fresh lube filter canisters every 200 run hours.
• Service raw seawater pump impeller and flush charge-air cooler tubes every 250 operating hours.

Factory Warranty Manifest Details

Volvo Penta provides a 2-Year factory limited warranty alongside a 3-Year major component structural cast protection program. The packaged wooden crate contains the D2-60 marine engine core, HS25A hydraulic down-angle gearbox, flexible torsional damper, 12V 115A alternator, 12V starter motor, electrical wiring harness, digital tachometer display, and installation manuals.