Filter
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Lubrication & Maintenance/Daily
OURGP12,0000048 –19–13OCT06–3/4
RG13542 –UN–20JUL04
Drain Fuel Filters (Dual Filters Shown)
RG7317A –UN–16JUN00
Priming At Fuel Supply Pump
A—Air Bleed Plugs
B—Drain Plugs
C—Fuel Supply Pump Primer Lever
3. Check the single or dual fuel filters for water or debris.
If filter is fitted with a see-through water separator
bowl, drain as needed based on a daily visual
inspection.
IMPORTANT: Drain water into a suitable container
and dispose of properly.
a. Loosen drain plugs (B) at bottom of each fuel filter
or bowl, if equipped, two or three turns.
b. Loosen air bleed plugs (A) two full turns on fuel
filter mountings and drain water from bottom until
fuel starts to drain out.
c. When fuel starts to drain out, tighten drain plugs
securely.
After draining water from the fuel filter, the filter must
be primed by bleeding all air from the fuel system.
a. Operate primer lever of the fuel supply pump (C)
until fuel flow is free from air bubbles.
b. Tighten bleed plugs securely, and continue
operating hand primer until pumping action is not
felt. Primer lever is spring-loaded, and will return to
normal position.
If the fuel system needs further bleeding of air, see
BLEEDING FUEL SYSTEM in Service As Required
Section, later in this manual.
Continued on next page
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