4-10 SHB 803 en – Edition 2.4 * 803s410.fm
Engine
4.8 Adjusting engine speed
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
Thermal switch
Housing
Seal
Thermostat
Housing cover
Fig. 15: Coolant thermostat