Wacker Neuson 803 Dualpower, Service Manual

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SHB 803 en – Edition 2.4 * 803s210.fm
2-3
Technical data
Engine Model 803
Product Yanmar diesel engine
Type 3TNV74F-SNNS
Design Water-cooled 4 stroke diesel engine
Number of cylinders 3
Fuel injection system Indirect injection
Aspiration Natural aspiration
Cooling system Water-cooled/blowing fan
Lubrication system Force-feed lubrication with trochoidal pump
Displacement 993 cm³ (60.6 in
3
)
Nominal bore and stroke 74 x 77 mm (2.9 x 3.0 in)
Output
11.5 kW at 2500 rpm
(15.4 hp/2,500 rpm)
Max. torque
53 Nm at 1800 rpm
(39 ft.lbs/1800 rpm)
Max. engine speed without load
2675 +/ − 25 rpm
(2,675 +/ − 25 rpm)
Idling speed
1300 +/ − 25 rpm
(1,300 +/ − 25 rpm)
Valve clearance (intake = outlet) 0.15 – 0.25 mm/(0.006 – 0.01") cold
Compression 32.4 +/ − 1 bar (469.9 +/ − 15 psi) at 250 rpm
Engine oil pressure 3 – 4.5 bar (43.5 – 65.3 psi) at rated output
Pressure switch for engine oil
pump
0.5 +/ − 0.1 bar (7.25 +/ − 1.45 psi)
Thermostat opening temperature 71 °C (160 °F)
Thermal switch 107 °C (230 °F)
Firing order 1 – 3 – 2 – 1
Direction of rotation
Anticlockwise
(as seen from the flywheel)
Starting aid Glow plugs (preheating time 4 seconds)
Specific fuel consumption 279 g/kWh (lb/hph)
Max. engine droop (all 2 pumps
under full load)
By about 110 rpm
Exhaust values according to EPA TIER IV final (from 2012)