Davco FUEL PRO 485 Technical Manual
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Contents
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FUEL PRO® 485TECHNICAL MANUAL®F1485 REV BT e c h n o l o g y , L L C12DAVCO Technology, LLC www davco com800-328-26111600 Woodland Drive, Saline, MI 48176-1629SERVICE PROCEDURE - BYPASS VALVEBypass valve Installation1 Remove the vent cap Open the drain valve by turning oneto one and a half revolutions Drain the Fuel Pro com-pletely Close the drain valve2 Remove the collar (using a DAVCO wrench) then removethe clear cover3 Remove the filter4 Using a clean shop rag, clean the cover, the collar and thethreads on the Fuel Pro body5 Flush the inside of the Fuel Pro body with clean dieselfuel to clear it of any debris6 Remove the bypass valve assembly and discard7 Remove the protective cap from the replacement bypassvalve assembly8 Install the replacement bypass valve assembly into theFuel Pro body (torque to 20 ft-lbs)9 Install the filter Refer to the section “Filter Change” toensure that the filter is aligned correctly10 Apply downward pressure on the top of the cover androtate the collar until contact11 Use a DAVCO wrench (if necessary) to tighten 3 addi-tional ribs12 Prime the unit by filling the clear cover with diesel fueluntil it reaches the top of the filter13 Install the vent cap Hand tighten until it clicks14 Start the engine and run for one minute Slowly open thevent cap and allow the fuel level to drop to about one inchabove the collar15 Hand tighten the vent cap until it clicksBypass Valve |
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