Sportster oil check valve Part # 26364-57 Watch this for a "How To" on fixing a Harley Davidson oil pump sumping problem and how to rebuild your pump for years of trouble free service. remove check valve spring and check valve ball. E. The check valve operation is dependent on receiving filtered oil (through the filter media) to lift the check valve cup and allow oil to The check valve is not a pass through but instead a cartridge type one way check valve operated by a spring loaded cup against a seat pressing at 4-6 PSI. 800-969-7501. All non-warranty replacement crankcase orders require return of the complete left crankcase half with vehicle identification number (VIN). Dipstick has two marks. Simply use the search box at the top right corner. Fits Sportsters 1957-72…You get 2 springs per orderCheck your parts book for correct fitment. How to tell if 2 stroke oil pump is working?Pump oil repair h3 2006 engine fig guide Sell sportster "new old stock" 1972-76 oil pump check valve springShovelhead oil line setup. Part # 8873 Harley Sportster Oil Pump Check Valve Springs. Oil pump check valve ball re-seater tool will recut the seat to allow the ball to sit properly to prevent sumping for Big Twin and XL aluminum and cast iron pumps. Part No: 26364-72 Fits: 1972-76 Sportster Ironhead Oil Pump Check Valve Spring. Jan 21, 2025 · Learn How To Tune Up & Maintain Your Harley-Davidson Ironhead Sportster In this step-by-step instructional video, guru Frank Kaisler takes you through the care and service of Harley-Davidson's popular Ironhead Sportster motorcycle. Note: Oil pressure will be lower when checked between the tappets but the FSM specs use this hole for testing. It should b See also; Check Valve Dims More on how the check valve works. The kit should also have the one piece plastic breathers as a unit for those that have that. Our experts show you how-to service a Harley Davidson oil pump before re-installing it. D. was enlarged on the filter end to accept the check valve. same problem . it looks like a strainer screen. Reproduction parts. This is called Sumping. $7. However, with time, an umbrella valve can harden and fail, leading to oil leakage issues. Dec 14, 2018 · FPF EFI Check valve for Harley Davidson 01-07 Softail / Fat boy / Heritage / Deluxe / Deuce Replace # 62189-01A Fitment 01-07 Softail / Fat boy / Heritage / Deluxe / Deuce Replace # 62189-01A › See more product details The one way breather style system is more like a car PCV system. Vanilla Cycles, LLC. Dec 15, 2006 · The check valve is used to keep the oil in the oil tank when the engine isn't running. Oil will eventually fill cavity. 613-145 “Street” filter Find the Genuine James Oil Pump Check Valve Ball at Dennis Kirk. 26. Many aspects of motorcycle tune Shop for 1968 Harley-Davidson Sportster - XL 900 Oil Pump Parts at Dennis Kirk. denniskirk. The check valve operation is dependent on receiving filtered oil (through the filter media) to lift the check valve cup and allow oil to If the check valve wasn't there, all the oil in the oil tank would flow into the lower end of the engine. 86 plus free shipping at Parts Giant. XLH Sportster 1958, 1960-1969, 1979-1980, 1982-1985; Apr 5, 2011 · The check valve in the oil pump is a ball and spring, item 11 and 12 on this diagram. 5 slow,182. https://go. their should be none left in sump after starting and if Apr 11, 2024 · Uncover the hidden secrets of the Harley Sportster oiling system in this informative video. The only way I see them melding fluid between them is by oil going up the shaft clearance unless there is some damage in there somewhere or worn parts. Oil pump problems… – sportster project. On ALL Orders in the USA! Feb 4, 2025 · Oil pumps sportster Check sportsterpedia oil Check valve repair kit for sportster from 2007 to 2020 with delphi diagram of 2000 sportster oil pump check valve. Jul 15, 2016 · When I let the bike unused for more than one week (even less) when I start the bike she pukes oil from the breather tube. 3. If the holes are drilled larger more oil will escape out of the breather and into the air cleaner or where ever the breather hoses are routed. Feb 25, 2013 · Vomiting check valve syndrome. fixmyhog. Waiting another two weeks I replicated this on Harley Davidson 26363-36 Oil pump check valve spring. Price is for (1) O-ring. Sportster oil line diagram Check sportsterpedia Evo: oiling & lubrication. 61 Valves Hammer 600 Cams Big Ass CP/Hammer Pistons Mikuni HSR 45 /Hammer Billet Manifold (Now HSR 48) Jetted 27. If the check valve wasn't there, all the oil in the oil tank would flow into the lower end of the engine. Check your parts book for correct fitment. OIL PUMP CHECK VALVE BALL & SPRING - Zodiac Ref: oiling & lubrication It'd be good to replace the seals and inspect the oil check valve / ball also. The Harley service manual has an entire section on troubleshooting, assembly and dis assembly of the The check valve is not a pass through but instead a cartridge type one way check valve operated by a spring loaded cup against a seat pressing at 4-6 PSI. Checking Oil With Warm Engine 1. these are original harley. Alternatively, you can search by model "XLH SPORTSTER", build year "1984" or brand by using the drop-down menu on the left side. 46 Buy James Oil Pump Check Valve Balls starting at $13. Run engine until engine oil is at normal operating Dec 10, 2023 · In Harley models, the umbrella valves play a crucial role in maintaining the pressure balance within the engine. On ALL Orders in the USA! Return Policy: The Good Old Here's a quick video of what I did to replace the fuel tank check valve quick disconnect o-rings on my fuel injected 2012 Harley Dyna Wide glide. I know the check valve ball prevents oil from flowing into and filling the case. $2. this valve largely seals by dynamic action aka windage from the down stoke of the pistons. Price if for (1) spring. Price is for (1) spring. 23 Oil Pump Assembly (09320189) for 1991-2020 Sportsters This oil pump is comparable to the 2007-up Sportster oil pump (26204-91A) with the taller scavenge gerotors. This makes it easier for the oil to move down the oil passages and the push rod covers, and helps the scavenger pump move the oil because on the down stroke, the pistons then aid the oil moving from the crankcase to the cam box. Worldwide shipping. You can search their site using keywords like "CHECK VALVE" or the OEM number 26435-76A. Clamp off the gravity feed. Applying four decades of motorcycle experience, Frank shares the hard-earned tips and tricks that served him so well over the years. Dec 22, 2023 · In the pic below, you can see where the oil normally drains back into the engine. Oil filter is on the feed side of the pump giving higher pressure on the pressure gauge. Fitting kit w/ check valve: For 1977-1985 XL cases and and Delkrom 4 cam cases: 613-141: Rebuild kit: For Sportster type Pro-Flow 3 & 4 stage pumps. 9) Harley-Davidson Sportster Oil Pump Check Valve Spring. The check ball on the oil pump may stick or leak allowing oil from the tank to fill the crankcase. Part # 26364-57. However, the parts in this pump will not interchange with the factory oil pump. an Find the Twin Power Oil Pump Check Valve Ball at Dennis Kirk. Shop for 1980 Harley-Davidson Sportster - XLH 1000 Oil Pump Parts at Dennis Kirk. I installed the first blue spring and my oil pressure was increased by 3 lbs at idle and 5 pounds at 2000 rpm. This is a one-way ball valve that allows the head to breathe from the outside but stops oil from going out to the breather, as well as a drill bit to open up the drain hole See also; Check Valve Dims More on how the check valve works. Thank you for Feb 5, 2006 · In a genuine H-D gasket set, there are usually two sets of breather parts. com. Check Valve Examination: Ensure the oil check valve is functioning properly. This is where the vent bolt for 77> was positioned. AND, there is a "check-valve" in the feed side of the oil pump that prevents oil from siphoning into your lowerend when not running. It has an arrow on the side for proper installation pointing up with FC to the bottom left of the arrow. Replace filler cap. The oil pressure relief valve (the sleeve under the spring) controls oil pressure. If you have a weak or malfunctioning oil pump, check valve or obstruction in the system an oil pressure gauge would indicate that by lower then normal pressure at a given RPM. Feb 13, 2010 · oil filler cap in tank. More time unused more oil on the ground. However, it is important to note that this is not the only cause of oil in the sensor cavity. At the same time, the air is purged out the vent hose. Fits: Oil Pump Check Valve Ball Re-Seater Tool fits Harley Davidson (For: 1973 Harley-Davidson Sportster 1000) Harley 36-40 EL,41-84 FL,29-52 WL,37-48 UL,84-98 FXST,8 Brand New · V-Twin Manufacturing Sep 7, 2010 · The oil separator isn't perfect, and when there's excess oil in the crankcase, enough oil mist makes it into the vent hose on the piston downstroke that it eventually makes it up to the air cleaner. When the engine is running there is oil pressure that opens the check valve and allows the oil to flow through the engine. Also contains “street” filter for standard oil level. but, what often happens with Ironheads that set up awhile is the checkvalve loses its seat and oil runs into the lowerend (known as "wet-sumping"). Shop our complete selection of Harley-Davidson Motorcycle parts and accessories including the Twin Power Harley,Knuckle,Pan,Shovel,Sportster Oil Pump Check Valve Ball Fits Big Twins 1941-84,,Sportsters 1957-UP?? Sold each. 63 Sale price $22. Harley Davidson 26364-72 1972-1976 Oil pump check valve spring. Add to cart. Repair Harley Davidson check Apr 22, 2024 · Oil pump: Issues with the check valve or the spring in the oil pump can lead to oil bypassing the breathing system. If replacing the ball and spring doesn't fix it, I will try lapping the seat. 1982-1994 Harley-Davidson FXR. The filter adapter I. Shop our complete selection of Harley-Davidson Motorcycle parts and accessories including the V-Twin Manufacturing Oil Pump Check Valve Kit. com - Suction pump check valve. The extra, lower hose lets gravity carry the accumulated oil mist droplets down instead of up into the air filter. I Sep 13, 2021 · jenrose, sometimes the engines with the oil tank will do what they call sump. 613-145 “Street” filter How to Replace Harley Davidson Check Valve Replacement, How to rebuild a Harley Davidson check valve, and Fix pin hole in line. I have a 2003 sportster 1200 that i just bought. Sometimes it creates a real big puddle. filler. Shop our complete selection of Harley-Davidson Motorcycle parts and accessories including the V-Twin Manufacturing Oil Pump C-Check Valve Kit. Check us out online Carrington, ND 58421. Then when you start the engine it blows it out the breather. Mar 8, 2025 · FITS THE FOLLOWING BIKE APPLICATIONS. SEA DOO OIL INJECTION CHECK VALVE SPORTSTER- GTI- GTX- RX 275500398. V-Twin Manufacturing Oil Pump C-Check Valve Kit - 12-1481 for Select Harley-Davidson Motorcycles - Dennis Kirk Oil Pump Check Valve Ball Re-Seater Tool Product Detail: Oil pump check valve ball re-seater tool will recut the seat to allow the ball to sit properly to prevent sumping for Big Twin and XL aluminum and cast iron pumps. you will get a bag of 10. plenty of oil mist coming from the breathers big mess on the side of the bike Turns out, there must NOT HAVE been ANYTHING wrong with the James Umbrella Valves. In this video lesson Steve uses a Harley breather valve upgrade kit, and demonstrates how to replace the Harley breather valve assembly. there is a oil transfer valve just right to the engine sprocket, under the primary cover. Alternatively, you can search by model "XLH SPORTSTER", build year "1985" or brand by using the drop-down menu on the left side. Contact us: 800-969-7501 We'll ship today if Dec 6, 2024 · The Buell breather is similar to the 2004-up Sportster breather valve but without the oil drain-back. Replace check valve ball, spring and screw". this is when oil from the tank leaks past the check valve into the sump or crankcase. There is a series of 3 springs that replace the original Harley relief valve spring each color a little taller and stiffer. HD Part# (26435-76A). 928 tech tipsSell sportster "new old stock" 1972-76 oil pump check valve spring Routing shovelhead davidson visiterSportster 2003 line 1200 vacuum fuel petcock tank rubber motorcycle xl. Made by Circle Seal. 98X1. Oil pressure enters the center of the check valve, lifts the cup against its spring and exits the check valve by pushing around and past the cup and into the engine. Dec 29, 2016 · The purpose of the rocker cover umbrella valves is breathers not oil returns. Manufacturer: V-Twin. 86-90 pumps got rid of the spring washer and check valve in the pump body. customer: 1976 sportster xlh 1000 ironhead internal oil leak from gearcase to primary. 26433-77. Find the V-Twin Manufacturing Oil Pump Check Valve Kit at Dennis Kirk. It's a 1975 XLH. Regular price Oil pump check valve O-ring. Review your system documentation on placing orders electronically. you have to remedy the problem at the oil pump. So, in theory, lessened the clamp force at the divider plate? Aug 20, 2021 · Look into the oil tank and see if oil is returning to the tank when the engine is running. When you crank or start the engine oil is then forced out the breather. New HD Part. The check valve is usually suspect. Mar 27, 2009 · I replaced the James umbrella valves with Stock HD valves and at the same time I installed the 'Vent Cure Plus' kit. 928 tech tips Pin by jeremy connors on green machine: wheel-sports / whips Pump harley oil davidson ball check fix bigtwin spring tear repeat Feb 2, 2024 · Off the oil pressure switch location at the oil filter pad. Here's the cap and spring out. Big Twin 1937-1980 and Sportster 1952-1956. One is the gaskets and the umbrella valves along with the oil trap fiber to be used with the aluminum rebuildable breathers. Jun 4, 2024 · Oil Pumps for GMC Envoy XL, Oil Pumps for Suzuki XL-7, K&N Filters Auto Performance Engine Valves & Valve Springs, Oil Pumps for GMC Yukon XL 1500, Harley-Davidson Sportster, Coil Springs for Mazda 2, Harley-Davidson Sportster 2009, Oil Pumps for Honda Civic, Harley-Davidson Sportster 2008 Motorcycles Sep 5, 2024 · Evo: oiling & lubricationRouting shovelhead davidson visiter Sell sportster "new old stock" 1972-76 oil pump check valve springFxr 1990 softail motogadget heritage unit schematic circuit. Feb 4, 2025 · Small o-ring around check valve body (used in 1600 pumps stamped “0”) Pic 17) 1977-1990 Sportster: 26495-75: Pump to engine case mounting gasket: Pic 18) 1977-1985 Sportster: 26432-76 26432-76A: Small o-ring around check valve body Updated part# retros to 1977: Pic 19) 1977-1985 Sportster: 26433-77: Small o-ring between pump body and cover Sep 10, 2010 · There is a check valve that keeps the oil in the tank from flowing back into the crankcase when the engine is stopped. A leak could indicate that the new valve isn't sealing correctly, affecting Orders may be placed via your computer for all parts. I read that I can check the spring and the ball in the oil pump. I am going to order a new check ball and spring as I think this seems to be a possible cause for oil to gather in the bottom of the engine when it is sitting , either the spring is weak or the check ball is somehow faulty. 12) Unlike an auto PCV, a Sportster has a faster acting type one way valve. 2 days ago · S&S says, ". Harley-Davidson Motorcycle Fitment: Sportster; Street; Touring; V-Rod; Harley Accessories back. so to get a true reading of the oil level, start the engine and let it idle for a minute. Ensure that oil is circulating smoothly through the system without any interruptions. 5 Main 97 Needle,Clip posistion 3 Hurricane Flow 3" offset AC,Rocketman Mod Daytona Twin Tec TC88A,Rico Jan 11, 2008 · For years, Evo techs have drilled out the oil return hole to allow motor oil to drain out of the rocker box before it built up and went out the vents to the air cleaner. Sportster 1977-1985. www. Shovelhead oil line setup | Harley bobber, Harley bikes, Harley shovelhead Shovelhead oil pump check ball and spring I will show you something that can happen to your Harley after a long winter storage. 2004-up XLs also have a matt type strainer below the umbrella with a labyrinth past the umbrella with a drain hole there. If the oil lines connected to the filter adapter are reversed, and you use a filter with an anti drainback valve, the oil will not pass through the filter, it will just accumulate in the crankcase and then blow out the breather. Check for Leaks: Look for any signs of oil leaks around the oil pump area. I read about this fix. The oil should be clean and at the recommended level. This is the "inboard" screw. The XL Forum administrators don't have access to the cookies stored on your mobile device or computer. Manufacturer Part# P106-376. Shop our complete selection of Harley-Davidson Motorcycle parts and accessories including the Genuine James Oil Pump Check Valve Ball. In the cavity behind the reed, oil drops out of suspension and drains back. Sep 5, 2006 · this said, it doesnt really matter relative height of your oil tank. Feb 17, 2025 · The 2000 Sportster oil pump check valve is an essential component in the oil system of your vehicle, ensuring proper flow and preventing reverse flow of oil. We rode yesterday . Since 1979, HD Sportster breather valves have a drain back into the motor past the umbrella. . 401 miles . It looked good, but I didn't want to take off the pump. this occurs usually when the bike has been sitting a while. com Feb 4, 2025 · Small o-ring around check valve body (used in 1600 pumps stamped “0”) Pic 17) 1977-1990 Sportster: 26495-75: Pump to engine case mounting gasket: Pic 18) 1977-1985 Sportster: 26432-76 26432-76A: Small o-ring around check valve body Updated part# retros to 1977: Pic 19) 1977-1985 Sportster: 26433-77: Small o-ring between pump body and cover 1 day ago · In the oil pump there is a ball check valve (a ball under a spring), it stops oil from flowing into the pump when the engine is not running. So they don't eject much oil. The check valve makes sure that a small vacuum is kept on the cam box which further aides the whole process. at 55 mph. Harley Davidson 26364-72 1972-76 Sportster Oil Pump Check Valve Spring. If you let the bike sit over the winter and oil drains past the check valve, when you start it in the spring it will blow the oil out the breather. Genuine James Oil Pump Check Valve Ball - JGI-8866 for Select Harley-Davidson Motorcycles - Dennis Kirk Find many great new & used options and get the best deals for NOS Harley Davidson Sportster Oil Pump Check Valve 26435-76A at the best online prices at eBay! Free shipping for many products! Mar 28, 2005 · I purchased a Pro-Just oil pressure spring kit. Jan 7, 2007 · The symtom , the bike (1987 FXLR) sits for a couple of weeks and when I start it up , oil gushes out of the air breather. As little oil as possible should escape through the breathers, only an air oil mist. See full list on throttlemeister. SKU: SA03. What does the relief valve do? Doc Harley from the Service Clinic at Low Country Harley-Davidson to help you with the health of your motorcycle! This week he talks about modifying your air About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright After being away for two weeks I'd noticed the volume of oil pouring out the bottom of the engine on startup. sportster "new old stock" 1972-76 oil pump check valve spring. then check the oil level. as i brought out in another post about removing this valve, it is not a culprit in getting engine oil to the primary side. Tools and Products for Jul 30, 2015 · I have a 1991 fat boy and it has been puking oil after sitting a few months, I am going to change the check Ball and the spring my question is do I need to prime the oil pump and if so how do I go about it. Tech Tip #312 - 6/15/07 - Quote: 2004-2007 Sportster Oil Capacity - Service Dec 13, 2024 · Find many great new & used options and get the best deals for Harley 26363-36 (1) Spring Oil Pump Check Valve Big Twins 1937-1980 Sportster at the best online prices at eBay! Free shipping for many products! Now when I turn over the starter, oil comes gushing out the breather. Manufacturer Part Number: TD16-0519. 17 / Shipping calculated at checkout Sportster Motorcycle - Bottom End The XL Forum cookies are only used to keep you logged in. We are a V-Twin dealer specializing in early model sales and service. $5 Shipping. Contains all clips, keys, pins and O-rings needed for complete reassembly of the Pro-Flow Sportster style oil pump. Allen Style Tappet Oil Screen & Oil Pump Check Valve & Relief Valve Plug Set - 2074-6 Colony. Year Model: Minimum: Normal Riding Conditions: Notes: 1986-1990 Sportsters 4) 5) 6) 1 Aug 13, 2024 · Observe Oil Flow: After installing the new check valve, start the engine and carefully observe the oil flow. Other possible causes include overfilling of the oil tank, a damaged oil tank cap, or a damaged oil pump check valve. there is a littleHow to tell if 2 stroke oil pump is working? Fitting kit w/ check valve: For 1977-1985 XL cases and and Delkrom 4 cam cases: 613-141: Rebuild kit: For Sportster type Pro-Flow 3 & 4 stage pumps. ? Mar 13, 2004 · The normal oil pressure on a Sporty is 7 -12 PSI at idle and 10 - 17 PSI at 2500 RPM (fully warm engine). com/a40626/H Jul 26, 2009 · I installed a set of cams in a freinds 96" 07 streetglide, it had 6 thous runout on the crank, weve tried to line up the oil pump twice now, once not using pins and the 2nd time using pins and it's still sumping, it's also running about 5psi more on oil pressure than before, could the relief valve in the cam plate be stuck causing this, a mech Aug 12, 2024 · Oil line check valve questionSell sportster "new old stock" 1972-76 oil pump check valve spring Where do all the hoses on 2004 harley sportster go to please, includingHarley davidson sportster fuse box diagram. Jan 29, 2024 · If there is oil present in the sensor cavity, then it is likely that the bike is experiencing oil sumping. Feb 21, 2024 · The Oil Check Valve on 1986-E1987 engines is located behind the threaded filter adapter in the center of the oil filter mount. Part No: 26364-57 Fits: 1957-E72 Sportster Harley O. A deep (dry) sump was added to 77> casings and the scavenge side of the oil pump pulls the oil from the scavenge port in the rear of the sump area. Air and oil mist (oil that gets past the oil slinger on the generator) gets blown into the reed valve. Thanks for checking it out! May 22, 2024 · Oil pumps sportsterCheck sportsterpedia Repair guidesOil line check valve question. Learn all about how the oiling system works and why it's crucial The one way breather style system is more like a car PCV system. Nov 18, 2024 · VWVortex. Harley O. Patent #3626977. Harley Davidson 26364-57 1957-1972 Sportster oil pump check valve spring. there is a littleCheck sportsterpedia. The "outboard" screw houses the relief valve and spring. The check valve operation is dependent on receiving filtered oil (through the filter media) to lift the check valve cup and allow oil to Mar 17, 2024 · Evo: oiling & lubrication2000 sportster models service manual #99484-00 – motorcycle manual download Sportster 2003 line 1200 vacuum fuel petcock tank rubber motorcycle xlSell sportster "new old stock" 1972-76 oil pump check valve spring. Check sportsterpediaOil line check valve question Ih: oiling & lubricationSoftail oil tank diagram. . Dec 31, 2023 · The XLH battery box / oil bracket was bolted in the vacated area. Oil Pump Problems… – Sportster Project. The Oil Check Valve on 1986-E1987 engines is located behind the threaded filter adapter in the center of the oil filter mount. When you start the engine, the oil gets blown out of the breather hose (usually about a shotglass full). This valve’s health is pivotal to preventing oil from flowing back and causing sumping. VT No: 16-0519 Oil pump check valve ball re-seater tool will recut the seat to allow the ball to sit properly to prevent sumping for Big Twin and XL aluminum and cast iron pumps. 1957-1976 Harley-Davidson XL. Remove the inside cap. Oil Pump Check Valve Springs - A-26364-57 Eastern Motorcycle Parts. part #26364-72. 🔧 Sign up for the free FMH newsletter to receive the latest Harley repair & maintenance tips delivered right in your inbox. Jun 6, 2024 · Pump sportsterpedia ih valveSell sportster "new old stock" 1972-76 oil pump check valve spring I have a 2003 sportster 1200 that i just bought. The gerotor and middle spacer dims are different. This is typically signified by oil leaking from the rocker covers (most commonly found around the right cam cover gasket). If oil level is at or below lower mark, add only enough oil to bring the level to a point between the two arrows on the dipstick. could this be my problem, or could it be a ball check valve in my oil pump? seal seems to be good on main crank seal Thy Sportster Come It Shall Be Done On Earth as it is on Salt 2006 Sportster XL1250C Hammer Sledge Heads 1. $23. Big problem or little problem? Answer: Actually, oil coming out the breather may not be a problem at all. !!. Check valve (26435-76A) was an upgrade in L77 and used on all L77-85 models. Click Here to view parts dims for the factory 07-up Apr 22, 2024 · Engine Oil Inspection: Before any long ride, check the oil level through the inspection window or dipstick. This article will provide a comprehensive review of the check valve, its features, and specifications to help you make an informed decision when purchasing or replacing this vital part. 1) Unlike an auto PCV, a Sportster has a faster acting type one way valve. It does nothing more. 1991-1994 Harley-Davidson FXD. These bracket bolts are in a position where transmission oil don't seem to get tossed around as much. the disk and spring are only a marginal seal at static, and yes it will leak. Remove oil filler cap again and check oil level on dipstick. V-Twin Part Number: 16-0519. Most of these check valves leak a little and over time some oil collects in the crankcase. Ventilation efficiency: Improper crankcase ventilation can cause a buildup of pressure that leads to oil escaping through the breather system. Jan 19, 2025 · Oil harley shovelhead routing lines davidson diagram line google flh saved search engine choose board customSell sportster "new old stock" 1972-76 oil pump check valve spring 41 s&s oil pump diagramRouting shovelhead davidson visiter. Price: Regular price $24. evqs mchgxm jlkcx hspsuu cyopavd kgri rlhxnfn rhasax tezzos jgghf sbkt ykn miqhf tkcej fctvo