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Wacker Neuson 803 Service Manual

Wacker Neuson 803
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4-10 SHB 803 en – Edition 2.4 * 803s410.fm
Engine
4.8 Adjusting engine speed
Notice!
The maximum engine speed is set and sealed by the manufacturer without the
pump and may not be increased!
Adjust engine speed without load!
Run the diesel engine until it reaches operating temperature
Check idling speed and maximum engine speed with all attachment functions in neutral
Idling speed: 1100 +/ 50 rpm
Max. engine speed: 2270 +/ 10 rpm
4.9 Compression
Remove the injection lines and the injection nozzles
Set the fuel injection pump to zero delivery (remove the plug for the cutoff solenoid)
Turn the engine
Install the compression gage on the cylinder you want to measure
Turn the engine with the starter and read the pressure off the pressure gage
Specified value: 33 +/ 1 bar (478.6 psi +/ 14.5) at 250 rpm
Threshold value: 26 +/ 1 bar (377 psi +/ 14.5) at 250 rpm
4.10 Checking the coolant thermostat
Remove the thermostat
The thermostat is located on the water pump
– see Overview of engine 3TNV70-VNS (Tier IV final up to 2012) on page 4-2
Fig. 13: Adjusting engine speed
A
Fig. 14: Compression
Thermal switch
Housing
Seal
Thermostat
Housing cover
Fig. 15: Coolant thermostat

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Wacker Neuson 803 Specifications

General IconGeneral
BrandWacker Neuson
Model803
CategoryExcavators
LanguageEnglish

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