DANGER
Danger of fire from spontaneous ignition of fuel!
Serious injury or death could result from the ignition and combustion of fuel.
➤ Allow no open flames or sparks at the place of use.
➤ Stop the engine.
➤ Wipe up escaped fuel.
➤ Keep fuel away from hot machine parts.
➤ Ensure that the maximum ambient temperature is not exceeded at the place of use.
Fig. 53 Fuel system maintenance
1
Fuel tank
2
Fuel fine filter
3
Fuel pre-filter with water trap
4
Manual fuel pump with bayonet fitting
➤ Open the right-hand access door.
10.4.3.1 Bleeding the fuel system
Air can enter the fuel system if the fuel tank is empty, after a fuel filter change or when carrying out
work on the fuel lines.
Bleed the fuel system if the engine refuses to start despite a full fuel tank.
1. Open the right-hand access door.
2. Unlatch the manual fuel pump bayonet lock by pressing and turning anti-clockwise.
The pump piston is pushed out by the spring.
3. Pump the piston until high resistance is felt.
4. Keep pumping until the return line is filled.
5. Activate the «battery isolating switch».
6. Close the door.
Start the engine as soon as the fuel system has been bled and allow to run for at least 5 minutes
in IDLE.
7. Open the right-hand access door.
8. Latch the manual fuel pump bayonet lock by pressing and turning clockwise.
9. Check the fuel pre-filter for leaks.
Fuel has escaped: Re-tighten filter cartridge and all screw connections.
10. Close the door.
10 Maintenance
10.4 Engine
110
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
No.: 9_9425 01 E