GILLIG LOW FLOOR, Руководство по обслуживанию

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Engine
7
Fuel Filters
The primary (suction side) fuel filter for the Cummins ISL engine on your bus is a Fleetguard FS1003
(10-micron) fuel/water separator. The secondary (pressure side) filter is a Fleetguard FF5488 (3-mi -
cron). The primary fuel filter provides efficient fuel/water separation. Both the primary and secondary
filters mount remotely from the engine and are accessible through the curb-side access door. Note that
the primary filter, shown in Figure 3- 6, has a drain valve and WIF (water in fuel) sensor. The WIF tests
conductivity and signals the engine ECM if the fuel becomes too conductive, i.e., if there is too much
water in the fuel.
Water should be drained from the primary filter on a daily basis. Drain no more than about 4 oz to avoid
having to re-prime the engine. See Chapter 2—Preventive Maintenance for filter change intervals.
Primary Fuel Filter Element Replacement
Wires and electrical equipment must be shielded during the filter change,
since diesel fuel can permanently damage electrical insulation.
removal
1. Clean the area around the filter.
2. Disconnect the wiring harness from the WIF (water-in-fuel)
sensor.
3. Disconnect the wiring harness from the fuel heater, if equipped.
4. Loosen and remove the fuel filter.
5. Make sure the seal ring does not stick to the filter head.
6. Clean the area around filter mounting stud.
7. Dispose of the filter in an environmentally responsible manner,
according to state and/or federal (EPA) recommendations.
IN
IN
Figure 3-6, Fleetguard
Fuel/Water Separator
WIF Sensor Drain Valve