APR FSI Fuel Pump Installation - GoAPR

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APR FSI Fuel PumpInstallation Notes, Recommendations, and PrecautionsPREFACEThe installation of the APR FSI Fuel Pump onto any VAG 2.0T FSI engine shouldbe carried out using all of the factory recommended installation procedures andprecautions. The notes, recommendations, and precautions in this document areintended as a supplement to those already provided by VAG. This entiredocument must be read and understood before attempting to install yourAPR FSI Fuel pump.WARNING: Direct Injection FSI fueling systems run at very high pressures. Thepressure in the fuel lines must be relieved prior to removal of the fuel pump toprevent serious bodily injury. Please consult a factory-approved repair manual(i.e. Bentley manual) for the proper procedures and precautions.INSPECTING YOUR VEHICLE BEFORE INSTALLING THE APR FSI PUMPTo ensure that your vehicle is ready for the installation of the APR FSI pump, youmust be aware of the condition of the mechanical components that drive thepump in your 2.0T FSI equipped vehicle. This is critical to the operation andlongevity of your vehicle and your APR FSI Fuel Pump.The high-pressure FSI fuel pump used in the 2.0T FSI equipped vehicles ismechanically driven by the intake camshaft and is therefore directly tied to thevehicle valve train assembly. In addition, there is a low-pressure feed pump atthe fuel tank of your vehicle and a fuel filter with integral pressure-regulator thatare important to the operation of the APR FSI pump. To add to the complexity,there are many auxiliary sensors and pressure relief valves that are all critical tothe proper operation of the direct injection fueling system on your vehicle. It isthe responsibility of the customer and/or the installer to ensure that all the vehiclecomponents driving the FSI fuel pump are in good working order and are not in astate of excessive wear or failure prior to the installation of the APR pump.Volkswagen of America, Inc. has released a Technical Service Bulletin (TSB)stating that there is a known problem concerning premature wear of the intakecamshaft lobe and camshaft follower that drive the FSI high-pressure fuel pump.This wear has been known to cause fuel delivery issues and fuel rail pressurefluctuations. If this wear goes unchecked, wear can also begin on the base ofthe FSI high-pressure fuel pump. In some cases, this wear can result in acomplete failure of the intake camshaft which may result in extensive damage tothe engine valve train, head, and other related components. The published TSBdescribes the proper method for inspecting your vehicle for this type of wear andAPR, LLC Tech Article “APR FSI Fuel Pump Installation Notes, Recommendations, and Precautions”;Version 1.0, Released 02/04/08

also describes what steps should be taken to repair the damage through yourfactory-authorized service department. Please go to the internet link below toview a copy of the VW/Audi Technical Service Bulletin related to premature camlobe wear:http://www.goapr.com/images/support/tsb/20t cam wear.pdfIT IS THE RESPONSIBILITY OF THE END-USER TO ENSURE THAT THEFUEL PUMP RELATED CAM LOBE, CAM FOLLOWER, AND ORIGINAL FUELPUMP ARE IN PROPER WORKING ORDER PRIOR TO INSTALLATION OFTHE UPGRADED APR FSI FUEL PUMP. In addition, if the vehicle has had anyissues related to fuel delivery prior to the installation of the APR pump, athorough inspection of the other components related to fuel delivery may ng with the FSI Fuel Pumps:1. Precautions should be taken to keep the FSI fuel pump in a cleanenvironment free of dust, sand/grit, metal shavings, etc. prior to and duringthe installation process. The pump should remain in a clean plastic bag until itis ready to be fitted to the vehicle.2. The APR FSI Pump will be shipped with all inlet, outlet, and pressure portscovered. These ports should remain covered until the last possible minute toensure that there is no contamination within the pump chambers prior toinstallation3. Take care not to drop the OEM or APR FSI Pump or subject it to any impactsprior to or during the installation process4. Prior to installation of the OEM Pressure Sensor and/or Pressure RelieveValve (Schrader valve) into the APR FSI Pump, make sure that the threadsare clean of debris, sand/grit, and/or metal shavings, etc. The threads ofthese fittings can be cleaned with a standard brake cleaner while debris canbe removed with a shot of compressed air.5. The installation of your APR FSI Fuel Pump may require that you remove thefuel inlet fitting from your OEM supplied pump and install that fitting into yourAPR FSI Fuel Pump (based on part revision changes made by VW/Audi). Youmust check the type of fuel inlet fitting that is located on your original FSI fuelpump before starting the installation to ensure that you properly prepare yourAPR FSI pump for fitment on your vehicle. NOTE: the fuel outlet fitting shouldAPR, LLC Tech Article “APR FSI Fuel Pump Installation Notes, Recommendations, and Precautions”;Version 1.0, Released 02/04/08

not be removed or altered in any way. If a fitting change must occur, this willrequire you to remove the fuel inlet fitting from both your OEM supplied pumpand your APR FSI Fuel Pump and install the OEM supplied inlet fitting intoyour APR pump in place of the fitting supplied by APR. Removal of each ofthese fittings should be done with care such that the minimum torque isapplied with the proper tool to effect the removal and reinstallation of thefitting.5.1. There are two types of fuel inlet fittings that VW/Audi uses for the highpressure FSI fuel pump (see figures 1 and 2):Banjo style fuel inlet fittingFIG 1: FSI Fuel Pump shown with Banjo typefuel inlet fitting that is secured and sealed with afactory banjo fitting (already on vehicle fuel line)and a banjo-style bolt.APR, LLC Tech Article “APR FSI Fuel Pump Installation Notes, Recommendations, and Precautions”;Version 1.0, Released 02/04/08

“Bamboo” style fuel inletfittingFIG 2: FSI Fuel Pump shown with “Bamboo”type fitting where a hose is pushed-on to thebarbed fitting and secured with a hose clamp.5.2. If you are purchasing a new (not a rebuilt) APR FSI Fuel pump, you willreceive the pump with the “Bamboo” type barbed fitting. You will need tocheck the type of fitting that your vehicle was originally equipped with todetermine whether or not your original fuel line is compatible with theBamboo fitting. If your vehicle is directly compatible with the Bamboofitting, you can install your APR FSI fuel pump without the need to removeand/or reinstall any of the fittings on the pump5.3. If there is a need to change the fuel inlet fitting on your APR pump, thiscan be done given basic hand tools including: a 14mm socket or wrench(Bamboo fitting), a 17mm socket or wrench (Banjo fitting), a calibratedtorque wrench, and a bench-top vise (for holding the pump in place whileperforming work)5.4. You should install a clean, debris-free fitting into the APR pump andtorque the fitting to 28Nm. Note: this is the tightening torque for theassembly of the Banjo or Bamboo-style fuel fitting into the pump only andAPR, LLC Tech Article “APR FSI Fuel Pump Installation Notes, Recommendations, and Precautions”;Version 1.0, Released 02/04/08

not the tightening torque for the banjo bolt that joins the fuel line to thepump if the banjo style fitting is being used.6. Other than the removal and reinstallation of the fuel inlet fitting (as describedin Note 5), the OEM Pressure Sensor, and the OEM Pressure Relief Valve(Schrader valve), DO NOT disassemble any parts of the APR FSI Fuel Pump.For information concerning the removal and reinstallation of the OEMPressure Sensor or the OEM Pressure Relieve Valve, please consult afactory-authorized manual (i.e. Bentley Manual).INSTALLATION OF APR PUMP1) With the engine cool, disconnect the negative terminal on the battery.2) Remove the air duct to the factory airbox, and disconnect the MAF sensorwiring harness. Lift up and remove the factory airbox.3) Disconnect the two electrical connectors from the top and side of the stockFSI fuel pump.4) If equipped, remove the plastic cap from the Schrader-style fuel pressurerelease valve on the stock FSI fuel pump. Place a rag under the FSI fuelpump and depress the Schrader valve to release any additional fuelpressure.5) If equipped, remove the pressure release valve from the FSI fuel pump,being careful not to strip the fitting.6) Disconnect the two fuel lines from the bottom of the FSI fuel pump.7) Remove the three bolts holding the FSI fuel pump to the cylinder head andcarefully remove the pump.8) If necessary, swap the fittings from your stock fuel pump to the APR FSIfuel pump. See the “NOTES/RECOMMENDATIONS/PRECAUTIONS”section above regarding the fittings on the fuel pump.9) Swap the low fuel pressure sensor from the stock FSI fuel pump to theAPR FSI pump and tighten to 15Nm.10) Remove the cam follower and inspect as according to the factory TSBregarding cam and cam follower wear. If you are unsure or unable todetermine as to whether the wear on your cam follower/cam areexcessive, please contact APR or seek a second opinion beforeproceeding.11) After determining that wear is not an issue, reinstall the cam follower. Ifyou are using a new cam follower, be sure to use some moly grease onthe camshaft side of the follower for initial break in.12) Lubricate the o-ring on the outside body of the APR FSI pump with engineoil.13) Carefully install the APR FSI pump in the cylinder head and hand tightenthe three bolts.APR, LLC Tech Article “APR FSI Fuel Pump Installation Notes, Recommendations, and Precautions”;Version 1.0, Released 02/04/08

14) Reinstall the fuel lines to the bottom of the APR FSI pump.15) Torque the three bolts holding the APR FSI pump to the head to 10Nm.Tighten the union nut on the fuel line to 25Nm. If equipped, tighten thebanjo bolt to 17Nm. If your car has a bamboo style fitting, reinstall thehose clamp on the fitting.16) Reconnect the two electrical connectors to the APR FSI pump.17) Reinstall the factory airbox, the air duct to the factory airbox, and the MAFsensor wiring harness.18) Reconnect the negative battery terminal.ROUTINE FUEL PUMP INSPECTIONOn a periodic basis, around every ten thousand (10,000) miles, APRrecommends that you inspect the FSI fuel pump, cam follower, and camshaft inaccordance with the factory TSB for abnormal wear. If any wear appears to haveworn through the black wear coating on the cam follower, we recommend thatyou replace the cam follower. Once this black coating is worn off, the wear rateof the cam follower and lobe is dramatically increased. Keeping a good camfollower in the car is critical to the long term operation of your vehicle.The cam follower and camshaft wear rates on even stock vehicles appears to beincreased over what even VW/Audi has anticipated. We predict that VW/Audi willeither supersede these components to increase their longevity or they will beginto include this inspection as a part of the routine maintenance of the vehicle.We also highly recommend on any modified car an increased oil service interval.Be sure to use oil that is VW 502 00 specification approved, and change the oilon a regular basis, preferably every three to five thousand (3000-5000) miles.If you have any questions or concerns about the installation of your APR FSIFuel pump, please contact APR Technical support at (800)680-7921 or (334)5025181. An electronic copy of this document is available on the Customer Supportsection of APR’s website, www.goapr.com.APR, LLC Tech Article “APR FSI Fuel Pump Installation Notes, Recommendations, and Precautions”;Version 1.0, Released 02/04/08

APR FSI Fuel pump. WARNING: Direct Injection FSI fueling systems run at very high pressures. The pressure in the fuel lines must be relieved prior to removal of the fuel pump to prevent serious bodily injury. Please consult a factory-approved repair manual (i.e. Bentley manual) for the proper procedures and precautions.

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