Filter
Top Products
435/485/535
4-23
Operation 25
Change the Fuel Filter
WARNING: FUEL IS FLAMMABLE. KEEP ALL
CIGARETTES, FLAMES, PILOT LIGHTS, WELDING
EQUIPMENT, AND SWITCHES OUT OF THE WORK
AREA AND AREAS SHARING VENTILATION TO
AVOID SEVERE PERSONAL INJURY OR DEATH
WHEN WORKING ON THE FUEL SYSTEM.
Clean the area around the fuel filter head and filter
(3). Disconnect the wiring harness from the water-in-
fuel sensor (4).
Unscrew and discard the old fuel filter (5).
Use a clean, lint-free towel to clean the filter head
gasket surface.
Apply a thin coat of clean engine oil to the gasket
surface and the O-ring in the center of the fuel filter.
CAUTION: MECHANICAL OVERTIGHTENING OF THE
FILTER CAN DISTORT THE THREADS OR DAMAGE
THE FILTER ELEMENT SEAL.
NOTE: The engine is equipped with a priming pump
and does not require the fuel filter to be filled prior
to the installation if the following filling procedure is
followed.
Install the new filter onto the filter head. Tighten the
filter until the gasket contacts the filter head surface.
Tighten the filter an additional 3/4 of a turn after the
gasket contacts the filter head surface, or as specified
by the filter manufacturer.
NOTE: If the filter is equipped with a water-in-fuel
sensor, rotate the sensor to desired location, and re-
connect the wiring harness.
To prime the fuel filter, turn the ignition switch to the
ON position and leave for two minutes. The engine
can then be started.
NOTE: The engine will, perhaps, run rough for several
minutes until the air is out of the system.
Replacement fuel filter element P/N: 86034027
F4-12
3
4
5
Operation 26
Check the Engine Supplemental Coolant
The SCA protection additive level must also be checked
whenever coolant is added or the cooling system filter
is changed.
A test kit, complete with instructions, to check the
concentration level is available from your Cummins
dealer.
Follow the instructions in the kit to maintain proper
SCA protection level.
Section 4 - Lubrication & Maintenance
Every 250 Hours