Fig. 48 Bleeding the fuel system
1
Fuel pre-filter with integrated water trap
2
Bleed screw
3
Manual fuel pump
1. Place a receptacle beneath the water trap housing.
2. Open the bleed screw at the filter head.
3. Operate the fuel manual pump only until no more air bubbles appear in the fuel flowing from
the bleed screw.
4. Close the bleed screw at the filter head.
5. Turn on 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 mi‐
nutes in IDLE.
7. Open the left-rear door.
8. Check the fuel water trap for leaks.
Fuel has escaped: Re-tighten filter cartridge and all screw connections.
9. Close the door.
10 Maintenance
10.4 Engine maintenance
No.: 9_9570 07 USE
Operator Manual Screw Compressor
M250 SIGMA CONTROL MOBIL
123