OM-C3 11/21
37
Service and Maintenance - 500 Hour
SP15. Replace fuel filter/water separator
Escaping fluid under
pressure can penetrate the
skin causing serious injury.
Relieve pressure before
disconnecting fuel or other lines.
Tighten all connections before applying pressure.
Keep hands and body away from pinholes and nozzles
which eject fluids under high pressure.
Use a piece of cardboard or paper to search for leaks.
Do not use your hand.
1. Close fuel shut-off valve at bottom of fuel tank
2. Clean entire area surrounding fuel filter assembly to
keep debris from entering fuel system.
3. Disconnect water in fuel sensor.
4. Drain fuel into a suitable container.
5. Firmly grasp the filter or filer housing and rotate it
clockwise 1/4 turn Remove ring with filter element
(E).
6. Inspect filter mounting base for cleanliness. Clean as
required.
!
CAUTION
Location of electrical connector (A),drain (B), filter base (C),
filter/water separator (D) - M50C13, M65C13, M99C13
Location of electrical connector (A),drain (B), filter base (C),
filter/water separator (D) - M150C13
NOTE: Raised locators on fuel filter canister must be
indexed properly with slots in mounting base for correct
installation.
7. Install new filter element onto mounting base. Be sure
element is properly indexed and firmly seated on base.
It may be necessary to rotate filter for correct align
-
ment.
8. Align keys on filter element with slots in filter base.
9. Install retaining ring onto mounting base making
certain dust seal is in place on filter base. Hand tighten
ring (about 1/3 turn) until it “snaps” into the detent.
DO NOT overtighten retaining ring.
NOTE: The proper installation is indicated when a “click”
is heard and a release of the retaining ring is felt. A plug
is provided with the new element for plugging the used
element.
10. Connect water in fuel sensor.
11. Open fuel shut-off valve. Whenever the fuel system
has been opened up for service (lines disconnected or
filters removed), it will be necessary to bleed air from
the system. (See BLEEDING THE FUEL SYSTEM on
Page 63)
