T e c h n o l o g y , L L C
DIESEL PRO
®
245
TECHNICAL MANUAL FOR DTNA
5
www.davco.com
800-328-2611
Saline, MI 48176
P. O. Box 487
DAVCO Technology, LLC
Installation Location
The Diesel Pro must be installed between the fuel tank and
the fuel transfer pump.
Mounting the Diesel Pro
Mount the Diesel Pro keeping the following points in mind:
•
Do not install the Diesel Pro directly on the engine.
•
Mount vertically with the cover and element pointing up.
•
Make sure there is enough top and side clearance for the
cover to be conveniently removed for filter replacement
(3.5” minimum).
•
The Diesel Pro
MUST
be installed so that the Filter
Element is above the “FULL” level of the fuel tank. If
mounted below full tank level, a shut off valve will be
required at the inlet to allow filter changes without
overflow of fuel.
1. With the engine shut down and at ambient temperature,
close the fuel shutoff valve (if equipped) and place a suit-
able container under the fuel filters.
2. Remove the primary fuel filter element assembly, sedi-
menter, and/or water separator. Drain the used element
and dispose of it in an environmentally responsible man-
ner, according to state and/or federal (EPA) recommenda-
tions. The fuel can be returned to the tank.
3. Mount the Diesel Pro in the desired location using 3/8”
Grade 8 hardware.
Fuel Line Routing
To minimize fuel system restriction, observe the following
guidelines when plumbing the fuel system:
•
Keep the fuel line routing as smooth as possible with no
low-hanging loops which can trap water.
•
Use 90° elbows only when necessary.
•
If the fuel hoses are cut to length on the job, be sure that
the inner liner of the fuel hose is not cut by the fitting,
which can cause check valve performance issues. Make
sure hoses are clean and free of debris before installing.
•
To avoid damaging the aluminum Diesel Pro body, do not
over-tighten fuel lines or fuel line fittings.
1. Route the fuel supply line from the pick up on the fuel
tank to the Diesel Pro inlet (labeled “Fuel In”).
2. Route the fuel outlet line from the Diesel Pro outlet (la-
beled “Fuel Out”) to the inlet of the fuel pump.
The inlet and outlet fittings can be moved from side to
side depending on the applications needs. (Example :
FUEL IN right and FUEL OUT right, ) Be sure to use only
ONE INLET and ONE OUTLET port per installation.
FUEL IN
FUEL IN
FUEL OUT
FUEL OUT
Priming the Fuel System
1. Check to make sure the drain valve at the base of the
Diesel Pro is closed.
2. Remove the vent cap from the top of the clear cover. Fill
the Diesel Pro full with clean fuel. Re-install the vent cap.
Tighten the vent cap by hand until it clicks.
3. Start the engine. When the lubrication system reaches its
normal operating pressure, increase engine RPM to high
idle for one to two minutes. After the air is purged loosen
the vent cap until the fuel level lowers to just above the
collar. Tighten the vent cap by hand until it clicks.
The clear filter cover will not fill completely during engine
operation. It will gradually fill over time and the fuel level will
rise as the filter becomes contaminated.
Water-in-Fuel Sensor (WIF) Installation
1. Open the vent cap. Open the drain valve by turning one to
one and a half revolutions. Drain the Diesel Pro complete-
ly. Close the drain valve.
2. Install WIF into WIF port. Torque to 20-24 in-lbs.
3. Prime the Diesel Pro and check for leaks.
F1353 REV B
INSTALLATION INSTRUCTIONS
