120VAC ELECTRIC PRE-HEATER INSTALLATION
DAVCO 120 Volt AC Preheater plugs into the same power outlet you
use for engine block heaters . Overnight, the heaters keep filter clog-
ging wax from forming without overheating the fuel .
Installation
1 . Open the vent cap and the drain valve . Drain all the fuel from
the Fuel Pro . The fuel can be reused after the pre-heater is
installed . If the fuel is not reused, dispose of it in an environ-
mentally safe way . Close the drain .
2 . Remove the pipe plug in the Fuel Pro base plate .
3 . Apply liquid thread sealant to the pre-heater threads and install
into the Fuel Pro base . Tighten to 15-30 ft-lbs .
4 . Connect the wire harness to the heater and route the harness
to a location where it can easily be plugged into a 120VAC
outlet .
5 . Pour fuel into the Fuel Pro to one inch below the top of the
filter element . Reinstall the vent cap . Tighten the vent cap by
hand until it clicks .
6 . Start the engine . When the lubrication system reaches its nor-
mal operating pressure, increase engine speed to high idle for
one to two minutes . To purge the air, loosen the vent cap until
the fuel level drops to just above the collar . Tighten the vent
cap by hand until it clicks .
Note:
If your truck already has block heaters or engine heat-
ers which connect to 120 Volt plugs, you may be able to wire the
DAVCO Preheater into that same wiring harness using “Y” cord
P/N 102015 .
120 Volt AC plug-in for overnight cold weather
elimination of fuel wax
“Y Cord”
P/N 102015
Single Cord
P/N 101868
110°
100°
90°
Temperatur
e Incr
ease
80°
70°
60°
50°
40°
30°
20°
10°
Baseline Temperature
0°
1 hour 2 hours
3 hours
FUEL PRO
®
382
TECHNICAL MANUAL
T e c h n o l o g y , L L C
DAVCO Technology, LLC P. O. Box 487 Saline, MI 48176 Call 800-328-2611 www.davco.com F1271 REV J
October 3, 2016 11:34 AM
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