TABLE OF CONTENTS - DAVCO Technology, Diesel Fuel .
TABLE OF CONTENTSApplications, Models, and Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1How it Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1“SEEING IS BELIEVING” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Dimensions and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3EE Important Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Priming the Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 612 and 24VDC Pre‑heater Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10120VAC Overnight Heater Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Fuel Port Threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Diagnostic Procedures for Air Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23BVisual Diagnostics – Air vs. Vapor Bubbles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Visual Diagnostics with Clear Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Diagnostic Procedures For Pre‑heater/Overnight Heaters . . . . . . . . . . . . . . . . 25Filter Change Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Preventative Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Bypass Valve Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Check Valve Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Service Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Warranty Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Parts Return Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33FOR UPDATED INFORMATION VISIT WWW.DAVCO.COMF1212 REV F2019 DAVCO Technology, LLC. Last updated 07-11-2018
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CAPPLICATIONS, MODELS, AND OPTIONSThe Fuel Pro 482 is customized specifically for the Detroit Diesel DD13, DD15 and DD16 Engines.BThe Fuel Pro 482 combines the features of fuel filtration, fuel/water separation andfuel filter preheating into a single unit. It is intended for any diesel engine with: Flow rates up to 180 GPH Biodiesel/Renewable Fuel CompatibilityApplicationsModels and Options Base Model‑Unheated 12VDC or 24VDC Pre‑heater 120VAC Overnight heaterClass 7 and 8 TrucksHOW IT WORKSFuel from the tank enters the Fuel Pro body (suction side of the fuel system).Large contaminants and “free” water are separated from the fuel and remain in the body.Fuel rises into the clear cover.Contaminants and emulsified water are captured by the filter media.Fuel level continues to rise to maintain a fuel path through the clean filter media with low restriction.Clean, water‑free fuel exits the Fuel Pro and flows to the engine fuel injection system.Fuel System DiagramFUEL TO TANKFUEL FROM TANKFUEL TO ENGINEFUEL MODULEFUEL TANKDAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-16291800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L C“SEEING IS BELIEVING” See when NOT to change the fuel filter.See the condition of the fuel. Seeing what collects on the filter media or what’s happening inside the clear cover can helpdiagnose many fuel and mechanical conditions.“Filter on Top” configuration. Water and debris removed from the fuel falls to the lower chamber and stays away from thefilter media resulting in longer filter life.Built in protection when priming the fuel filter. Unfiltered fuel is kept on the “dirty” side of the filter media during primingensuring only clean fuel reaches the engine.Patented media. The “Best in Class” StrataPore media removes 98% of free and emulsified water. This far exceeds theperformance of cellulose media.When new, the fuel level in the filter will be very low withminimal restriction. As the filter is used, contaminantscollect on the filter from the bottom up. Fuel rises on thefilter indicating remaining filter life.Fuel level at filter wrap level. Even though the fuel levelis now more than half of the filter element, the fuel is stillflowing through clean media at minimal restriction levels.The filter still has significant life remaining.Fuel level increases in clear cover. As contaminantscollect on the filter, the fuel rises to a non‑contaminatedsection of the filter, providing optimal filtration while main‑taining lowest restriction.The filter element is now completely covered by fuel.At this point, all of the media’s surface area is utilized.Restriction is increasing and the filter element should bechanged at the next scheduled maintenance interval.DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-16292800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CDIMENSIONS AND SPECIFICATIONS3.50[88.9]RECOMMENDEDMIN. SERVICE HEIGHTMOUNTING HOLE DISTANCE:3.94 [100.1]MOUNTING HOLE OPENINGS: .531 [13.5]3.940[100.1]Ø.53"[13.5]2 HOLES14.00[355.6]MAXFUEL IN1/2"-14 NPTFFUEL OUT1/2"-14 NPTFLEFTFRONTRIGHTSPECIFICATIONSFILTRATION PERFORMANCE AT 100 GPH14.28 in. (362.7 mm)Depth, Overall9.85 in. (250 mm)Width, Max.8.34 in. (211 mm)Mount Bracket Centers3.94 in. (100 mm)Weight, DryApprox. 11 lb.1.4Recommended MinimumService Height3.5 in (88.9 mm)1.2Fuel Flow, Max.180 gphPre‑heater12VDC 155W or12/24VDC 195WOvernight heater120VAC 75WPORT INTERFACEFuel In Connection ‑ aftermarket kit½"‑14 NPTFFuel Out Connection ‑ aftermarket kit½"‑14 NPTFFuel In Connection‑OEM or first fitM22 x 1.5Fuel Out Connection‑OEM or first fitM22 x 1.5Micron Coarse WaterRemoval (%)Emulsified WaterRemoval (%)Dirt HoldingCapacity (grams)798.7157Differential Pressure (in‑Hg)Height, OverallDAVCO Technology, LLCBOTTOMAll dimensions are in inches [millimeters]100Restriction vs. Flow1.00.80.60.40.20.00102030405060708090Flow (gph)1600 Woodland Drive, Saline, MI 48176-16293800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CEE IMPORTANT SAFETY PRECAUTIONSGeneral Safety Precautions FOR USE WITH DIESEL FUEL ONLY To avoid serious injury or death, follow the safety information in this document. Keep this manual. If you need to replace the manual, call customer service at 800‑328‑2611or visit www.davco.com for a replacement. Refer to appropriate regulations for environmental and workplace safety rules.WARNING: To prevent personal injury Scalding hazard: When diesel fuel is circulated through an operating engine, it can become very hot. Do not allowfuel to come in contact with eyes or unprotected skin. Allow the engine and fuel to cool to ambient temperaturebefore replacing the fuel filter or performing service operations which could result in spillage of fuel from the fuelsystem. Fire Prevention: Heated fuel can form combustible vapor mixtures in the area around the fuel source. To eliminatethe potential for fire, keep open flames, sparks or other potential ignition sources away from the work area. Do notsmoke during filter replacement or service operations. Inhalation Precaution: Always perform engine or vehicle fuel system maintenance in a well ventilated area that iskept free of bystanders. The ignition key must be in the off position, unless otherwise directed. To avoid unintentional engine startup, use alockout key and/or signage to alert personnel that work is being performed. Do not energize the pre‑heater outside of the Fuel Pro. It can become very hot.Government Regulations Engine fluids (oil, fuel, and coolant) may be a hazard to human health and the environment. Handle all fluids and othercontaminated materials (such as filters and rags) in accordance with applicable regulations. Recycle or dispose ofengine fluids, filters, and other contaminated materials according to applicable regulations.DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-16294800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CINSTALLATION INSTRUCTIONSInstallation LocationPainting PrecautionsThe Fuel Pro must be installed between the fuel tank and thefuel transfer pump. In some cases, the Fuel Pro can be usedas the only fuel filter in the system. This is generally depen‑dent on the engine model year. Consult the engine manufac‑turer for their recommendation.The collar/cover joint and threads are designed to be freeof paint in order to function properly. The cover and collarassembly must be completely masked off if the Fuel Pro is tobe painted. Do not install the Fuel Pro directly on the engine. Mount vertically with the cover and element pointing up. Make sure there is enough top and side clearance for thecover to be conveniently removed for filter replacement(3.5" minimum). The Fuel Pro MUST be installed so that the filter elementis above the “FULL” level of the fuel tank. If mountedbelow full tank level, a shut off valve will be required atthe inlet to allow filter changes without overflow of fuel.Fuel Line RoutingTo minimize fuel system restriction, observe the followingguidelines when plumbing the fuel system:EE The ignition key must be in the off position. To avoidunintentional engine startup, use a lockout key and/orsignage to alert personnel that work is being per‑formed. Chock the wheels. Keep the fuel line routing as smooth as possible with nolow‑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 thatthe inner liner of the fuel hose is not cut by the fitting,which can cause check valve performance issues. Makesure hoses are clean and free of debris before installing. To avoid damaging the aluminum Fuel Pro body, do notovertighten fuel lines or fuel line fittings.1. Route the fuel supply line from the pick up on the fueltank to the Fuel Pro inlet.1. With the engine shut down and at ambient temperature,close the fuel shutoff valve (if equipped) and place asuitable container under the fuel filters.2. Route the fuel outlet line from the Fuel Pro outlet to theinlet of the fuel pump.2. Drain and remove the primary fuel filter element assem‑bly, sedimenter, and/or water separator. Dispose of it inan environmentally responsible manner.3. The drawing below reflects the left side Fuel In/Fuel Outconfiguration. Fuel In is also available on the right side.3. Mount the Fuel Pro in the desired location using ½"Grade 8 bolts.FUEL INFUEL OUTDAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-16295800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CPRIMING THE FUEL SYSTEM1. Ensure that the drain valve at the base of the Fuel Pro isclosed.2. Remove the vent cap from the top of the clear cover.Fill the Fuel Pro with clean fuel. Install the vent cap andtighten it by hand until it clicks.3. Start the engine. When the lubrication system reaches itsnormal operating pressure increase the engine RPM tohigh idle for one to two minutes.4. After the air is purged and while the engine is at idle,loosen the vent cap and let the fuel level drop to justabove the collar, then tighten the vent cap by hand until itclicks.It is normal for the fuel level to vary after the initial start‑upand during engine operation. Filter performance is notaffected.DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-16296800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CINSTALLATION INSTRUCTIONS1. Install the fuel INLET and OUTLET fittings into theFuel Pro 482 facing upward at a 45 angle towards theback of the unit.2. Locate the two holes on the driver side bumper supportbracket just forward of the steering box.4. Attach the Fuel Pro to the front hole using a ½" bolt,washer and lock nut (for hand clearance). Rotate theunit inward and attach the Fuel Pro to the rear holeusing a ½" bolt, washer and lock nut. Torque both boltsto 96 ft‑lb.5. Disconnect the fuel supply line at the filter module andremove the zip ties.DAVCO Technology, LLC3. There will not be a steering box in models that includerack and pinion steering.1600 Woodland Drive, Saline, MI 48176-16297800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CINSTALLATION INSTRUCTIONS6. Rotate the fuel module inlet fitting towards the front ofthe truck and tighten.7. Install and route a new piece of ⅝" fuel tube towardthe front of the truck coming from the fuel module inletfitting.8. Route the new ⅝" fuel line coming from the inlet on theengine fuel module to the outlet of the Fuel Pro, cut andconnect.9. Install a ⅝" union on the fuel supply line and attacha new piece of fuel tubing to the compression fitting(approximately 6’ long). Cover the fuel line with 1"diameter split loom. Install zip ties and secure using aplastic clamp.DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-16298800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CINSTALLATION INSTRUCTIONS10. Connect the fuel supply line to the inlet on the Fuel Pro.DAVCO Technology, LLC11. Use the hand primer pump on the fuel module to purgethe remaining air from the fuel lines. Prime the Fuel Pro(see page 6) and check for leaks.1600 Woodland Drive, Saline, MI 48176-16299800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L C12 AND 24VDC PRE‑HEATER INSTALLATIONThe 12VDC and 24VDC Pre‑heaters are installed in the side ofthe Fuel Pro.1. Remove the vent cap. Open the drain valve. Drain theFuel Pro completely. Close the drain valve. The fuel canbe reused after the installation.The drawing below reflects the left side Fuel In/Fuel Outconfiguration. Fuel In is also available on the right side.2. Remove the plug or pre‑heater from the Fuel Pro.3. Apply liquid or paste type thread sealant to the pre‑heaterthreads and install the heater. Torque to 15‑30 ft‑lbs.4. Prime the Fuel Pro (see page 6) and check for leaks.5. Connect the chassis harness to the pre‑heater harness.6. Connect the power lead to the fused accessory sideof the ignition switch. The fuse rating depends on thepre‑heater installed.Approved fuse ratingsPRE‑HEATER PORTThe voltage and wattage ratings are stamped on the hex ofthe pre-heater for identification purposes. 12VDC System:--20 amp fuse for a 155W PTC pre‑heater--25 amp fuse for a 195W PTC pre‑heater24VDC System:-- 15 amp fuse for a 195W PTC pre‑heaterIf the keyed circuit will not handle the required amperagefor the pre‑heater, install a relay as shown below.Pre‑heater Wiring with RelayHarnessConnectorHeaterPre-heater Fuse87A12/24VDC30/5187 nition SwitchDAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162910800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CWIRING THE 12VDC PRE‑HEATER TO THE SAM CHASSIS1. Locate the 12VDC pre‑heater and connect it to thechassis harness.2. Route the chassis harness around the power steeringreservoir toward the firewall.3. Connect the ground eyelet from the chassis harnessto the ground stud on frame rail just to the right of theshock or ground the bus bar, depending on the year,and zip tie as needed.4. Route the 12VDC power lead towards the SAM ChassisConnector. (Zip tie harness as needed)Ground stud onframe rail just tothe right of theshockGround the busbarDAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162911800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CWIRING THE 12VDC PRE‑HEATER TO THE SAM CHASSIS1. Locate connector X57 and release the yellow handle toremove the connector.2. Remove the cover for the connector X57 by liftingupwards on the tabs.3. Locate cavity 15 on X57 and remove the cavity plug.4. Insert the 12VDC pre‑heater power wire into cavity 15of the X57 connector.DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162912800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CWIRING THE 12VDC PRE‑HEATER TO THE SAM CHASSIS5. Install the cover for the X57 connector, push until thetabs lock.6. Install the X57 to SAM Chassis Connector and lift thehandle to secure.7. Install the 20amp/35amp circuit breaker relay in the R1location.8. Install the 20amp fuse in the F2 location.DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162913800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CWIRING THE 12VDC PRE‑HEATER TO THE SAM CHASSIS9. Mark the inside of cover showing the added circuits R1and F2 with a red or yellow marker and Install cover.WIRING INSTRUCTION THE 12VDC PRE‑HEATER TO THE DDEC1. Locate DDEC box under the hood.DAVCO Technology, LLC2. Remove the cover from DDEC6 PDB by squeezing thetwo tabs.1600 Woodland Drive, Saline, MI 48176-162914800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CWIRING INSTRUCTION THE 12VDC PRE‑HEATER TO THE DDEC3. Remove the PCB by pushing in the two tabs as shown.4. Remove the rear cover of DDEC6 PDB using a straightpick as shown.5. Remove the fuses from DDEC6 PCB (make a note of thelocations for replacement).6. Remove the red plastic terminal retainer as shown.DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162915800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CWIRING INSTRUCTION THE 12VDC PRE‑HEATER TO THE DDEC7. Zip tie the 12VDC power lead to the DDEC6 PDBharness and cut to length.8. Cut off the SAM chassis terminal and seal.9. Strip the power wire on the power lead and crimp theelectrical terminal as shown. (P/N:23‑13215‑301).10. Insert the electrical terminal into the socket shown (fuselocation F5).DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162916800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CWIRING INSTRUCTION THE 12VDC PRE‑HEATER TO THE DDEC11. Install the rear cover as shown below.12. Replace the red plastic terminal retainer as shown.13. Replace the fuses as they were before install and installa 20 amp fuse in F5 location.14. Replace the DDEC6 PDB on the mount. Replace coverand mark the location of 20amp fuse for pre‑heater.DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162917800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L C120VAC OVERNIGHT HEATER INSTALLATIONThe 120VAC overnight heater is installed in the side of theFuel Pro. (The drawing below reflects the left side Fuel In/Fuel Out configuration. Fuel In is also available on the rightside.)1. Remove the vent cap. Open the drain valve. Drain theFuel Pro completely. Close the drain valve. The fuel canbe reused after the installation.2. Remove the overnight heater or plug from the heater port.3. Apply liquid or paste type thread sealant to the heaterthreads and install the heater into the 120VAC overnightheater port on the Fuel Pro. Torque to 15‑30 ft‑lb.4. Connect the “Y” cord to the overnight heater. Connectthe other end of the harness to the engine block heater.Connect the cord to a 120VAC output location on thetruck (usually located below the driver’s door).5. Prime the Fuel Pro (see page 6) and check for leaks.6. Refer to the following steps for wiring the 120VACovernight heater.120VAC HEATER PORTDAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162918800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L C120VAC OVERNIGHT HEATER INSTALLATION (WITH BLOCK HEATER)1. The 120VAC block heater is located to the left of the fuelfilter module.Block heater2. Locate the 120VAC receptacle where the 120VACovernight heater snaps into place. This receptacle islocated either below the driver’s door or to the right ofdriver’s door.ReceptacleFuel Filter Module3. Remove the plug from the receptacle and remove thecord from the engine block.4. Connect the straight end of the “Y” cord(DTNA P/N 06‑68843‑002) into the engine block.5.Connect the 90 end of the “Y” cord to the 120VACheater on the Fuel Pro.6. Route the “Y” cord towards the receptacle, zip tie whereneeded to secure.7. Push the male end of the plug into the receptacle untilthe plug snaps into place.8. Installation complete.DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162919800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L C120VAC OVERNIGHT HEATER INSTALLATION WITH BLOCK HEATER AND OIL PAN HEATER)1. The 120VAC block heater is located to the left of the fuelfilter module.Block heater2. Locate the 120VAC receptacle where the heater plugsnaps into place. This receptacle is located either belowthe driver’s door or to the right of driver’s door.ReceptacleFuel Filter Module3. Remove the plug from the receptacle and remove thecord from the engine block.4. Connect the straight end of the “W” cord into the engineblock.5. Connect the longest end of the “W” cord that has the90 end into the oil pan pre‑heater. Push the male endof the plug into the receptacle until the plug snaps intoplace.6. Route the “W” cord towards the receptacle, zip tiewhere needed to secure. Installation is complete.DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162920800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CFUEL PORT THREADSFuel Pro 482 OEM fuel ports are metric thread vs Aftermarket pipe thread Factory Installed Fuel Pros have M22 x 1.5 metric thread fuel ports. (Figure 1) Aftermarket retrofit kit fuel ports have pipe threads with a ¾"NPT x ½" NPT bushing. (Figure 2)M22 x 1.5 Metric threadsFigure 1¾" NPT to ½" NPT bushingFigure 2DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162921800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CVISUAL DIAGNOSTICS – AIR VS. VAPOR BUBBLESThere are two kinds of bubbles that may be visible at the fuel pump inlet of a diesel fuel system. The bubbles can becharacterized as either air bubbles or vapor bubbles.Air BubblesVapor BubblesAir bubbles are caused by any air leak on the vacuum (suc‑tion) side of the fuel system from the fuel tank pick‑up to andincluding the lift pump (see Figure 1).All diesel fuel has some level of entrained air caused by thenatural splashing that occurs in the fuel tank during normalvehicle or equipment operation. Vapor bubbles develop in theFuel Pro because the pressure inside the Fuel Pro is lowerthan the atmospheric pressure in the fuel tank. Vapor bubblescan vary from champagne size up to ¼" in diameter. They mayincrease in size or volume as engine RPM increases. The low‑er pressure draws the entrained air/vapor out of the fuel andthese bubbles will be visible as the fuel exits the Fuel Pro (SeeFigure 2). As the fuel enters the lift pump, it is pressurized andthe bubbles are compressed back into the fuel. There will beno bubbles on the fuel return side of the system. These vaporbubbles will not affect the performance of the engine.If there is an air leak in the fuel system, air bubbles will bepresent in the clear cover of the Fuel Pro. Follow test pro‑cedures outlined in “Diagnostic Procedures for Air Leaks”(see page 9) for air leak diagnostics. If there are no bubblespresent in the Fuel Pro cover and the engine continues torun rough, lopes or has a loss of power, there may be an airleak between the Fuel Pro outlet port and lift pump inlet. Thistype of air bubble can be seen if a sight tube is installed atthe lift pump inlet. Air bubbles may also be visible in the fuelreturn (spill) hose out of the fuel gallery. These leaks are easilyeliminated by checking and torquing the fuel fittings in thearea of the leak.TEST 2: An easy way to determine the difference betweenvapor and air bubbles is by temporarily removing the filterelement from the Fuel Pro. Fill the cover with clean dieselfuel, replace the vent cap and re‑run the outlet fitting sightglass test. If there are no bubbles visible in the sight glass,then the bubbles that were previously visible were vaporbubbles. If bubbles are still present then they are air. If airbubbles still exist, re‑run the test in TEST 1 to eliminate thechassis plumbing as a variable.TEST 1: A quick procedure to determine if the air leak is be‑tween the fuel tank and the Fuel Pro is to remove the Fuel Proinlet hose and route a new hose from the Fuel Pro inlet intoa container of fuel or the fuel tank fill cap opening. Start theengine and check for bubbles.If there are no air leak symptoms, but bubbles are present in asight tube at the fuel lift pump inlet, they are most likely vaporbubbles.There is no troubleshooting or repair procedure requiredfor vapor bubbles. Vapor bubbles do not cause performance issues and will not be present after the lift pump.FUEL RETURNFUEL RETURNENGINEENGINELIFT PUMPLIFT PUMPFUELTANKFUELTANKVAPOR BUBBLESAIR BUBBLESFigure 2Figure 1DAVCO Technology, LLC1600 Woodland Drive, Saline, MI 48176-162922800-328-2611www.davco.comF1212 REV F
FUEL PRO 482TECHNICAL MANUALTe c h n o l o g y , L L CDIAGNOSTIC PROCEDURES FOR AIR LEAKSEvery Fuel Pro is factory tested for leaks and is identifiedwith a traceable number prior to shipment. Most field issuesassociated with leaks are related to loose fittings. These leaksare easily eliminated by checking and torquing the fuel fittingsin the area of the leak. Some fittings may also require theapplication of liquid or paste type thread sealant.4.a. Remove the Fuel Pro from the chassis.b. Plug the fuel outlet port. Do not remove filter,cover/collar, vent cap, drain valve and/orcheck valve. If the Fuel Pro is equipped with apre‑heater, do not remove the pre‑heater.All suction side fuel filters experience bubbles. It is normalto see champagne size bubbles in the Fuel Pro cover, at theFuel Pro outlet or at the lift pump.c. Apply 15 PSI of air pressure at the fuel inlet.Immerse the Fuel Pro in a tank of water andlook for air bubbles.IN ORDER TO RETURN A FUEL PRO FOR EVALUATION,THE FOLLOWING PROCEDURES/TESTS MUST BECOMPLETED BEFORE REQUESTING A DAVCO RGA(RETURN GOODS AUTHORIZATION) NUMBER.I.d. Correct the source of the air leak and retest.II. Bubbles Not Visible: If there are symptoms of sucking air(indicated by engine loping/rough running performance/power loss, etc.) and there are no bubbles in the clearcover, the air leak is either at the Fuel Pro outlet fitting,vent cap o‑ring, the lift pump inlet connection, or the fuelhose/connections to the lift pump. Inspect and tightenfittings as needed.Air bubbles will be visible in the clear cover of theFuel Pro if the leak originates between the fuel tank andthe Fuel Pro. The following is a quick test to isolate the airleak source.A. Remove the Fuel Pro inlet hose.III. Excessive Restriction: If the fuel level is at the top of thefilter, replace the fuel filter. The Fuel Pro will not causeexcess system restriction if the fuel level is below the topof the filter. The only exception is if the grommet is notinstalled in the bottom of the filter element.1. Install a jumper hose from the Fuel Pro to thefuel tank (through the fill cap) or to a container offuel.2. Start the engine. If this eliminates the air bub‑bles, the air source is at the fuel tank fittings orhose connections.IV. Loss of Prime: When air is introduced into the fuelsystem, (i.e. draining water from the Fuel Pro or whenreplacing the fuel filter) a check valve is needed to keepthe fuel system primed from the Fuel Pro back to the fueltank. A check valve is standard with every Fuel Pro.3. Tighten all fittings and connectors. Retest.a. If air bubbles persist, the air source is on theFuel Pro side of the system:i.If air bubbles persist, test as follows:V. To test for proper check valve operation, place a drain panunder the Fuel Pro, remove the fuel inlet hose and openthe vent cap. Fuel should not flow out of the Fuel Pro,although slight seepage of fuel is normal. If fuel flows outof the Fuel Pro fuel inlet,29 “Check Valve Service”.Tighten all fittings on the Fuel Pro.ii. Loosen the collar until it spins freely.Apply downward pressure on the top ofthe cover and rotate the collar until con‑tact. Use a DAVCO wrench (if necessary)to tighten the collar three ad
FUEL PRO 482 TECHNICAL MANUAL F1212 REV F Installation Location The Fuel Pro must be installed between the fuel tank and the fuel transfer pump . In some cases, the Fuel Pro can be used as the only fuel filter in the system . This is generally depen‑ dent on the engine model year . Consult the engine manufac‑ turer for their recommendation .
Creating a table of contents The Insert Index/Table window (Figure 1) has five tabs. All of them can be used when creating a table of contents: Use the Index/Table tab to set the attributes of the table of contents. Use the Entries and Styles tabs to format the entries in the table of contents. Use the Background tab to add color or a graphic to the background of the table of
Creating a table of contents The Insert/Index Table window has five tabs. Four of them are used when creating a table of contents: Use the Index/Table tab to set the table's attributes. Use the Entries and Styles tabs to format the table entries. Use the Background tab to add color or a graphic to the table background. The next four sections of this chapter tell you how to use each . /p div class "b_factrow b_twofr" div class "b_vlist2col" ul li div strong File Size: /strong 554KB /div /li /ul ul li div strong Page Count: /strong 15 /div /li /ul /div /div /div
Word. Modifying the appearance To change how the table of contents looks – font type, size, indentation etc. – click in the table and on Table of Contents on the References tab, then choose Custom Table of Contents again. In the Table of Contents dialog box, click the Modify button to
The TABLE OF CONTENTS will have shifted. If you need to re-insert the TABLE OF CONTENTS, this margin fix will not stay in place. You will have to follow the temporary fix again OR make a permanent fix to the TABLE OF CONTENTS. Permanent fix: Place your cursor at the first entry in the TABLE OF CONTENTS.
DD13 & DD15 engines. Davco 482 Fuel Pro series. 37.95 LW4076XL EXTENDED DRAIN COOLANT FILTER - Detroit Diesel A4722030255; Detroit DD15 eng. 37.95 LFP3191 OIL FILTER - 485GB3191, 485GB3191A, 485GB3191B; Mack Volvo engines. 5.49 LAF1849 AIR FILTER - Detroit 60 Ser
FUEL FILTER Fleetguard FS1007; Cummins Signature Series 600 eng. (Fuel W/S w/Sensor) 24.95 L9915F FUEL FILTER Alliance ABPN10GFS19915; Freightliner Trucks with Detroit Diesel DD13 & DD15 engines. Davco 482 Fuel Pro series. 37.95 LAF3551 AIR FILTER Donaldson P153551; 38.95 L5086F FUEL FILTER International 1878042C91;
table of contents reviewed early. It is proposed that, in the digital environment, " the table of contents needs to be generated automatically to reflect the dynamic feature of "digital books" and online collections. the table of contents needs to provide an overview to contents of the documents it covers; the overview
Department of Aliens LAVRIO (Danoukara 3, 195 00 Lavrio) Tel: 22920 25265 Fax: 22920 60419 tmallod.lavriou@astynomia.gr (Monday to Friday, 07:30-14:30) Municipalities of Lavrio Amavissos Kalivia Keratea Koropi Lavrio Markopoulo . 5 Disclaimer Please note that this information is provided as a guide only. Every care has been taken to ensure the accuracy of this information which is not .
