SECTION 03: FUEL SYSTEM
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Section 03 revised May 2018)
5
FIGURE 4: FUEL FILTERS WITH VOLVO D13 ENGINE
03085
1.2.1
Primary Fuel Filter Replacement
1. Stop engine, close the fuel supply line shut-
off valve.
2. Place an appropriate container under the
fuel filter housing, then drain the water from
the water separation bowl.
3. Disconnect the fuel/water separator indicator
electrical connector.
4. Unscrew and remove the primary fuel filter
from the fuel filter housing. Drain filter.
5. Unscrew and remove the separation bowl
from the filter cartridge.
6. Remove and discard the old gasket from the
water separation bowl. Clean the bowl
thoroughly and then blow dry with filtered
compressed air.
7. Check that the drainage hole in the water
separator bowl is not blocked.
8. Apply a thin coating of clean engine oil to
the surface of the water separation bowl.
9. Install a new gasket to the water separation
bowl and then reinstall the separation bowl
to the new primary fuel filter cartridge.
10. Apply a thin coating of clean engine oil to
the surface of the primary fuel filter, install
the primary fuel filter to the fuel filter
housing, then tighten the primary fuel filter
½-¾ turn.
11. Connect the electrical connector for the
water/fuel separation bowl indicator.
12. Open the fuel supply line shut-off valve.
13. Purge air from the filter by operating the
priming pump to draw fuel and fill the filter.
When using the hand priming pump,
approximately 100 strokes will be required.
14. Start the engine and carry out a fuel-
tightness check. Let the engine run for about
5 minutes to remove air pockets from the
fuel system.
1.2.2
Secondary Fuel Filter Replacement
1. Stop engine, close the fuel supply line shut-
off valve. Place an appropriate container
under the fuel filter housing.
