Filter-Separator Maintenance Instructions (Cont)
23-3.1 FILTER-SEPARATOR ELEMENTS REMOVAL/INSTALLATION (M978)
(MODEL B) (CONT).
Fuel is very flammable and can explode easily. To avoid serious injury or death, keep fuel
away from open tire and keep fire extinguisher within easy reach when working with fuel.
Do not work on fuel system when engine is hot. Fuel can be ignited by hot engine. When
working with fuel, post signs that read NO SMOKING WITHIN 50 FEET of vehicle.
Do not handle separator or coalescer elements with bare hands. Any contaminant, including
dirt or oil from hands, will deactivate elements.
To clean fuel-separator element, submerge element
in clean fuel and gently scrub entire screen surface
with soft cloth or soft bristle brush.
Hold separator element by endcaps and visually
inspect entire screen surface for any nicks, cuts, or
flaws. If element is noticeably flawed, replace
Cleaned and inspected element should be tested for
its ability to repel water before it is reinstalled.
If water beads and rolls off screen surface during
test, element can be reused.
If water adheres to and wets any part of screen
surface during test, element should be recleaned
(step (1)) and retested (step (3)). If element fails test,
To test separator element, hold element at any angle
by endcaps, and gradually pour water over entire
When separator element passes
inspection and test, rinse element
thoroughly in clean fuel to remove any
traces of water. Allow separator element
to air dry before reinstalling it.