[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-661989-105":3,"detail-sidebar-cat-0-en-105":80,"doc-detail-661989-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":73,"head_meta":75,"extra_data":77,"updated_unix":79},105,"en","obs-regulated-return-fuel-system-kit-installation-guide","OBS Regulated Return Fuel System Kit - Installation Guide","","Installation guide for an OBS regulated return fuel system kit designed for 1994-1997 7.3L OBS Powerstroke diesel vehicles. Provides pre-installation safety instructions, advises thorough inspection of kit contents, and includes warnings about diesel flammability, vapor hazards, and workspace ventilation. Covers required precautions such as disconnecting batteries, using penetrating oil, draining the fuel filter bowl, and preparing the vehicle by removing key components, with a detailed parts list, identification of hoses and tubes, and basic tools needed for installation.",{"@graph":14,"@context":72},[15,34,55],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/obs-regulated-return-fuel-system-kit-installation-guide/661989/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/obs-regulated-return-fuel-system-kit-installation-guide/661989.png","ImageObject",300,407,{"name":42,"@type":43},"supergirl","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-29","2026-10-28",true,{"@type":52,"interactionType":53,"userInteractionCount":33},"InteractionCounter",{"@type":54},"ViewAction",{"@type":56,"mainEntity":57},"FAQPage",[58,64,68],{"name":59,"@type":60,"acceptedAnswer":61},"What should be checked before starting the installation?","Question",{"text":62,"@type":63},"Inspect all parts in the kit thoroughly before beginning. If any issue is found with the package, keep parts and packaging together and notify the selling dealer without attempting installation.","Answer",{"name":65,"@type":60,"acceptedAnswer":66},"Why is there extra emphasis on fire safety during installation?",{"text":67,"@type":63},"Diesel fuel is flammable and its vapor is explosive. The guide advises no smoking or open flame within 50 feet of the workspace and recommends keeping an appropriate fire extinguisher close by.",{"name":69,"@type":60,"acceptedAnswer":70},"What key steps are included early in the installation process?",{"text":71,"@type":63},"Apply penetrating oil to relevant bolts and fittings, drain the fuel filter bowl, disconnect both batteries (negative first), and loosen the accessory belt tensioner to lift the serpentine belt from the alternator and A/C compressor.","https://schema.org",{"og:url":32,"og:type":74,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":76,"canonical":32},"index,follow",{"doc_id":78,"site_id":7},661989,1793192740,{"code":4,"msg":81,"data":82},"success",[83,87,91,95,100,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":84,"show_sort_weight":85,"slug":86},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":88,"show_sort_weight":89,"slug":90},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":92,"show_sort_weight":93,"slug":94},"Exam",70,"exam",{"id":96,"doc_module":4,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},5,"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":102,"slug":103},6,50,"technology",{"id":105,"doc_module":4,"doc_module_name":25,"category_name":106,"show_sort_weight":107,"slug":108},7,"Healthcare",40,"healthcare",{"id":110,"doc_module":4,"doc_module_name":25,"category_name":111,"show_sort_weight":112,"slug":113},8,"Research & Report",30,"research-report",{"id":115,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},9,"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":96,"slug":129},19,"General","general",{"code":4,"msg":81,"data":131},{"doc_id":78,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":101,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":33,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":139,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":79,"read_time":144},962088121634,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","OBS REGULATED RETURN FUEL SYSTEM KIT  \nFits 94-97 7.3L OBS Powerstroke Diesel -Deletes Stock Filter Bowl Requires Electric Fuel Pump Conversion (Not Included!)  \nInstallation Guide  \nINSPECT CONTENTS OF THIS KIT THOROUGHLY BEFORE STARTING THE INSTALLATION PROCESS!  \nIF YOU FIND A PROBLEM WITH YOUR PACKAGE:  \n• KEEP ALL OF THE PARTS & PACKAGING TOGETHER  \n• DO NOT ATTEMPT INSTALLATION OF THE PRODUCT  \n• PROMPTLY NOTIFY YOUR SELLING DEALER  \n• PROVIDE DEALER WITH PHOTOGRAPHS IF REQ’D*  \n• WAIT FOR FURTHER INSTRUCTIONS FROM DEALER  \n*WE RESERVE THE RIGHT TO REQUEST PHOTOGRAPHS OF PACKAGING OR PARTS  \nIN ORDER TO PROPERLY ADDRESS ANY SITUATION INVOLVING EITHER DAMAGED  \nOR MISSING ITEMS.  \nTHANK YOU FOR YOUR COOPERATION!  \nThttahhnoekriYou~~ ~~fou~~g~~hnstalorl~~y~~laprtiureaonchdoaafsntindhgfethamkietilDiraAirlvisezone,D~~y~~alieowsuaeryssl~~ ~~OewlBfoS~~ ~~Rwrkiegthsafuteahyteisd~~ ~~RetmanMakeurnuasulrfubeeefthlsyoratstethe~~p~~emrorekciesitep!~~ ~~lPdeinnlea~~g~~tysewofiltihght  \nand adequate ventilation, and allow yourself several hours to complete the installation. After reading these instructions, if you feel that the installation is beyond your capability, please have this kit installed by a qualified mechanic.  \nFinally, the installation of this kit requires exposing the fuel system. Diesel fuel is flammable, and its vapor is explosive; therefore common sense dictates that there be no smoking or open flame within 50 feet of the workspace. If any fuel spills, contain it and wipe it up immediately. Do not let the fuel stand on any painted surfaces of your vehicle, or damage to the finish may occur. We HIGHLY RECOMMEND having an appropriate fire extinguisher close by!  \nPlease don’t hesitate to contact us should you have any questions .  \nDriven Diesel 7.3L “Old Body Style” Regulated Return Kit Contents  \nPlease use the following parts list and pictures to become familiar with this kit. ALL of the parts listed below should be contained in your kit. We will refer to the different fittings by their part number throughout the installation.  \nQty:  Part Number:  Description:  \n1 73FS-OBS-DSR-TUBE Driver Side OBS Return (Rear) Tube Assembly  \n1 73FS-OBS-DSR-HOSE Driver Side OBS Return (Rear) Hose Assembly  \n1 73FS-PSR-TUBE Passenger Side Return (Rear) Tube Assembly  \n1 73FS-OBS-PSR-HOSE Passenger Side OBS Return (Rear) Hose Assembly  \n1 73FS-OBS-PSF-HOSE Passenger Side OBS Feed (Front) Hose Assembly  \n1 73FS-OBS-DSF-HOSE Driver Side OBS Feed (Front) Hose Assembly  \n1 73FS-BLOWDOWN Regulator Blowdown Line  \n1 73FS-REG-ASSY Regulator Assembly (with Fittings)  \n1 73FS-OBS-FBD-ASSY Driven Diesel OBS Fuel Bowl Delete Block w/Bracket  \n1 73FS-HW-PACK Hardware Pack (Fittings, Screws, Etc.)  \n1 73FS-REG-BRACKET S.S. Regulator Mounting Bracket  \n1 Gauge Liquid Filled Pressure Gauge (not installed…see special insert)  \nHardware Pack Contents:  \n2 02MP-06MJ 1/8” Male Pipe to-06 Male JIC – Straight Fittings  \n1 02MP-06MJ45 1/8” Male Pipe to-06 Male JIC – 45° Fitting  \n1 02MP-06MJ90 1/8” Male Pipe to-06 Male JIC – 90° Fitting  \n1 OBS-FPlug Steel Freeze Plug  \n1 M8 Nylok M8-1.25 Stainless Steel Nylok Nut  \n1 02MP-Plug 1/8” Male Pipe Plug  \n1 Ped-ORing Set of Top and Bottom Turbo Pedestal O-Rings  \nNote: Installation of this kit requires the removal of your turbocharger. If you have been planning on replacing or upgrading your turbocharger, doing it during the installation of this kit will save you some labor time!  \nFUEL SYSTEM PARTS IDENTIFICATION  \nHoses: 73FS-OBS-DSR-HOSE  \n(left to right) 73FS-OBS-PSR-HOSE  \n73FS-OBS-DSF-HOSE  \n73FS-OBS-PSF-HOSE  \nTubes: 73FS-PSR-TUBE (left)  \n73FS-OBS-DSR-TUBE (right)  \nFittings: 02MP-06MJ (x2)  \n(left to right) 02MP-06MJ90 (x1)  \n02MP-06MJ45 (x1)  \nUse the above diagram to identify the different hoses and fittings in the kit  \nSome of the Basic Tools Needed for Installation:  \nStandard Combination Wrench Set 3/8” Drive Metric Socket Set T-27 Torx Driver or Bit Screw Driver Set“Allen”Wrench Set  \nMetric C","cbCairBWHzldoUfq","https://ap.wps.com/l/cbCairBWHzldoUfq","pdf",3557899,14,"English","# Installation Guide\n## Safety and Pre-Installation Instructions\n## Kit Contents and Parts List\n## Hardware Pack Contents\n## Fuel System Parts Identification\n## Basic Tools Needed for Installation\n## Installation Steps","[{\"question\":\"What should be checked before starting the installation?\",\"answer\":\"Inspect all parts in the kit thoroughly before beginning. If any issue is found with the package, keep parts and packaging together and notify the selling dealer without attempting installation.\"},{\"question\":\"Why is there extra emphasis on fire safety during installation?\",\"answer\":\"Diesel fuel is flammable and its vapor is explosive. The guide advises no smoking or open flame within 50 feet of the workspace and recommends keeping an appropriate fire extinguisher close by.\"},{\"question\":\"What key steps are included early in the installation process?\",\"answer\":\"Apply penetrating oil to relevant bolts and fittings, drain the fuel filter bowl, disconnect both batteries (negative first), and loosen the accessory belt tensioner to lift the serpentine belt from the alternator and A/C compressor.\"}]","OBS Regulated Return Fuel System Kit - Installation Guide | PDF",35]