Changing the filter cartridge:
Fig. 48 Changing the fuel pre-filter cartridge
1
Filter head
2
Filter cartridge with integrated water re‐
ceptacle.
3
Draining stopper with integrated level sen‐
sor
4
Electrical outlet for water level sensor
5
Direction of rotation to unscrew the filter
cartridge and the water trap
1. Place a receptacle beneath the fuel pre-filter housing.
2. Disconnect the water level sensor cable at the electric
3. Open the draining stopper in the bottom of the filter cartridge and drain water and contamina‐
tion.
4. Use a standard wrench to loosen and unscrew (counter-clockwise) the filter cartridge.
5. Empty any remaining fuel into a receptacle.
6. Unscrew the draining stopper of the filter cartridge and clean with lint-free cloth.
7. Check the seal of the draining stopper.
Gasket damaged: replace gasket.
8. Screw the draining stopper to a new filter cartridge (14.5 ± 3 lbf in).
9. Clean the sealing faces of the filter cartridge and filter head with a damp cloth.
10. Mount the filter cartridge to the filter head:
■ Moisten the sealing faces of the new filter cartridge with some fuel.
■ Manually screw the filter cartridge to the filter head (clockwise), until seal is tight.
■ Continue to manually turn until the filter cartridge is seated tightly.
─ ½ to ¾ turn approximately
─ 150–160 lbf in
11. Disconnect the water level sensor cable from the electrical outlet.
12. Open the left-hand door.
13. Turn on the «battery isolating switch».
14. Close the doors.
The fuel system must be bled after the filter cartridge has been changed.
10 Maintenance
10.4 Engine maintenance
No.: 901765 05 USE
Operator Manual Screw Compressor
M114 SIGMA CONTROL SMART
115
