Wacker Neuson 28Z3, Service Manual

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2-2
SHB 28Z3 EN – Edition 2.0 * 28z3s210.fm
Specifications
2 Specifications
2.1 Chassis
Sturdy steel sheet chassis, rubber-mounted engine
2.2 Engine
Fuel injection pump
Engine
Model 28Z
3
Product
Yanmar diesel engine
Type
3TNV76-NNS
Design
Water-cooled 4 stroke diesel engine
No. of cylinders
3
Fuel injection system
Indirect injection
Aspiration
Natural aspiration
Cooling system
Water-cooled/aspirating fan
Lubrication system
Force-feed lubrication with trochoidal pump
Displacement
1116 cm³ (68 cu. in.)
Nominal bore and stroke
76 x 82 mm (3 x 3.2”)
Output
15.2 kW (20.7 hp) at 2500 rpm
Max. torque
66.1 Nm (48.8 lbs/ft) at 1800 rpm
Max. engine speed without load
2675 +/- 25 rpm
Idling speed
1300 +/- 25 rpm
Valve clearance (intake = outlet)
0.15 – 0.25 mm/(0.006 – 0.01”) cold
Compression
23,5 +/- 1 bar (340.8 +/- 14.5 psi) at 250 rpm
Engine oil pressure (at rated speed)
2.9 – 4.4 bar (42 – 64 psi)
Pressure switch for engine oil pump
0.5 +/- 0.1 bar (7.25 +/- 1.45 psi)
Thermostat opening temperature
70 – 73 °C (158 – 163 °F)
Thermal switch
107 – 113 °C (225 – 235 °F)
Firing order
1 – 3 – 2
Direction of rotation
Counterclockwise
(as seen from the flywheel)
Starting aid
Glow plug (preheating time 4 seconds)
Max. inclined position (engine no
longer supplied with oil):
25° permanent hill climbing ability in all directions
30° hill climbing ability no longer than 3 minutes
Pay attention to the machine's tilting limit!
Specific fuel consumption
< 279 g/kWh at rated output
Exhaust values according to
EPA – Tier 4
Average engine droop
About 60 rpm, warm engine
boom, stick and backhoe bucket to the limit
Type YPES-3ML
Design
In-line pump
Injection pressure
118 – 128 bar (1711 – 1856 psi)
Engine speed control
Mechanical
Lubrication system
Engine oil lubrication
Specifications