Presentation; Technical Description - Volvo TAMD74C Operator's Manual

Presentation

TAMD74C-B, TAMD74L-B and TAMD74P-B are in-line, direct injection, 6-cylinder, marine diesel engines spe-
cially developed for fast planing and semi-planing craft.
The engines are equipped with electronic fuel control (EDC*), turbocharger, charge air cooler, heat exchanger for
thermostatically controlled fresh water cooling and electronic engine speed control and shifting.
The exhaust manifold and turbocharger are freshwater cooled to reduce heat radiation to the engine room.

Technical description

Engine and cylinder block
– The cylinder block and cylinder heads are manu-
factured of alloyed cast iron
– Two cylinder heads
– Replaceable wet cylinder liners
– Replaceable valve seats and valve guides
– Crankshaft carried on seven bearings
– Oil-cooled forged aluminum pistons
– Three piston rings, upper of keystone type
Lubrication system
– Freshwater-cooled oil cooler
– Gear driven oil pump
– Side-mounted full-flow and by-pass filter of spin-
on type
– Oil dipsticks on both sides of oil sump
* EDC (Electronic Diesel Control), see description in next section.
Fuel system
– Fuel injection pump incl. fuel feed pump and elec-
tronically controlled actuator
– Electronically controlled central processing system
(EDC)
– Six-hole injectors
– Twin fine fuel filters of spin-on type
Turbocharger
– Freshwater-cooled turbocharger with wastegate
Cooling system
– Tubular heat exchanger with integrated expansion
tank or 2-circuit keel cooing
– Seawater-cooled tubular charge air cooler
– Gear-driven seawater pump
Electrical system
– 12 V or 24 V electrical system incl. alternator (60 A)
with charging sensor
– Rubber suspended electrical terminal box with
semi-automatic fuses
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