The fix: Installing a new 2020 Harley oil pump is the only fix, which now comes stock on those 2020 and newer Harley models with the Milwaukee-Eight motor. I'm considering buying a Road King, 107 M8 engine. 68-99 Oil Pump Check Valve Repair Techincal Information From 1968 to 1999 the oil pumps are all pretty much the same in respect to the check valve. I think it is because oil is seeping past the check valve ball in the oil pump and into the crankcase. The shorter one of the 2 houses the check ball.Now when you release the screw do not lose the spring that is under there. Early Harley-Davidson engines, like the 1911 F-Head, didn't bother recirculating oil. Wet-sumping is a condition where oil, instead of returning to the oil tank, builds up in the crankcase and cam gearcase, causing excessive friction and power loss. I think it’s mounted beside the oil tank now and he hasn’t had issues since. He spends two days on it consulting with Milwaukee and making some modifications. They offered to do the fluids at no cost when I found the trans low until a fix was in. cold and 8-10 p.s.i. Here, Kevin Cameron notes several solutions and how they worked. Its come to THAT time when I'll have to get one after all these years . There are two causes for this: Oil is not returning to the tank or oil is seeping through the pump while the engine is sitting unused. If you look at the oil pump there are two towers with big screws on the top of them. The check valve is used to keep the oil in the oil tank when the engine isn't running. MARCH 18TH, 2018 - HARLEY OIL PUMP DIAGRAM PDF HARLEY OIL PUMP DIAGRAM STILL CONFUSED IN SEARCHING THE VERY BEST WEBSITE FOR TRYING TO FIND HARLEY OIL PUMP DIAGRAM SIMPLY RIGHT HERE' 'tear it up fix it repeat Harley needs to step up and take care of this issue at no cost to the customers that bought these bikes!!!!!!!!!!!!!!! Wet sumping is when oil fills the crankcase of a dry sump system. Another factory fix is a vent on the primary, so far the vent looks promising and word is the new bikes are coming with it. Of course, a transmission with low or no oil will certainly fail and need to be repaired or completely replaced. The symptoms of this is typically excessive smoking and oil coming out the engine breather tube. The shop was very honest and told me Harley as of yet did not have a fix. The dealership made a record of it and said Harley will not fix it unless it happens again so I'm keeping a close eye ... and installed the new 2020 oil pump before ridding it also as an upgrade. Also, early Harleys didn't even have a recirculating oil system. Recently a local Norton owner installed an oil pressure gauge on his Commando only to find the readings were 40 p.s.i. oil sumping on a sportster - Harley Davidson Motorcycles question To begin with, the capacity of your Sporty's oil tank is 3 quarts, not 3 liters. You shouldn’t have the sumping issue because your 18 should have the superseded oil pump. Shimming the relief valve did not improve things but careful lapping brought the pressure up to 65 p.s.i. In 1999, God, by his grace, chose to save an undeserving wretch like me. It reminds me of the internet chatter over the twin cam chain tension shoe era. Sorry for the pun but I’ve been reading about oil sumping in the new Harley Milwaukee 8 engines. I have a 2018 Tri Glide and having the same problem with trans oil going into the primary. Loss of top end power, bike couldn't get out of its own way, eventually started spitting oil out through the air cleaner. Unbolting the CKP isn’t hard and only involves a 3/16” Allen. 7 Harley-Davidson Motorcycles To Avoid Like The Plague (12 Worth Every Dollar) No one can deny the quality of Harley Davidson bikes, but that doesn't mean the company hasn't produced a few duds. started after changing oil. Fort Lauderdale, Florida USA Admin! I upgraded my oil pump plugs with a set of aftermarket ones back in the spring and all was fine until I had to park the bike for the entire month of July due to rain almost every day (that’s right, I don’t ride in the rain if I don’t have to). When the oil settles in the bottom end, we call it "oil sumping". After some test runs, they have the oil Over time, this leak could affect other components of your Harley and lead to a much more expensive fix. hot. One is taller than the other one. Harley-Davidson photo. Also, that's why if you idle it on the side stand there may be some extra oil collect in the sump. The repair is expected to take about a half-hour. Yall may already know this but it was new information for me and maybe it will help someone. Dealers will inspect the clamps and fix them free of charge. ;) I've read several stories about oil transfer or 'sumping' problems with the milwaukee eight engine. Sadly there are now a couple 19 CVOs that have sumped I have read. A liter is slighly more than a quart and the oil tank on the bike is designed to hold three quarts of hot oil. Harley-Davidson Milwaukee 8 Engine Problems! I’m trying to find the truth so My desire is to share some of the knowledge of Harleys that I have gained over the years, but more importantly to give glory to God. Harley may be going back to the future for 2019, fitting another Ugly Hose (TM :laugh: ), this time to cure the oil migration issue affecting a small number of M8s. The rider just squirted oil into oil coming out the breather vents in the air cleaner indicate the oil is Harley Davidson review rated 2.2/5.0 with 11 Comments: M8 motor with stage 4 kit all factory authorized parts, engine still sumping after going threw a few different... @PissedConsumer1634514 Your so wrong have a few friends with 2018 and one with a 2019. It’s been two years and some problems have bubbled up to HD attention. I noticed today that I have some oil dripping from my Harley air cleaner housing onto the right side of the motor. Harley changed the oil pump in their 1999 and later Twin Cam engines because of this. 18s still have sumping. First two positions were either too high or had too much hose. This is good but Harley has tried making the oil pump pickup smaller, whether that is working I can't say. (1.) This may be root of some folks sumping issues. He had to relocate it a couple of time. - Answered by a verified Motorcycle Mechanic changing the ignition does not affect breather timing. I have been a Harley Davidson mechanic/ machinist for over 30 years and own my own porting/engine rebuilding business. That's the claim this week on Facebook, from a guy in Oregon in a Road Glide group who has posted a story and a couple of photos. This eventually leaves the transmission very low on oil and the primary with too much oil. Lots of outrage from owners and denial from the MoCo. The S&S won't keep that from happening, but it should clear it soon after you stand the bike up straight. 1999 harley softtail evo motor dumping oil out of crankcase vent. He installed the breather kit himself and that seems to fix the issue. Method: 1) start the bike and do a short warm-up ride 2) stop the bike whilst still vertical 3) put bike on lifter 4) remove hex grub screw under crankcase on RHS of bike. Oil leaks affect your Harley’s performance, but also your safety. has 26,000 miles now and no transfer or sumping. It’s not much, but I’m concerned. Quick check:Tools: hex keys, measured 1 litre container, oil-proof Loctite. hot. Many schemes have been employed to overcome wet-sumping. They just flung it onto the road when they were finished with it. It'll be my first Harley. On the other hand, “sit sumping,” as I call it these days, is an indicator that Harley-Davidson has done some shabby design work when it comes to allowing oil that is supposed to remain where it’s put to migrate to places it has no business being! Harley Davidson Touring: How to Create Bypass Breathers Air cooled bikes like Harley big twins expand and contract with the heat soaking into the cylinders, much more so than a water cooler bike, or a car. Twin Cam Tear Down Part 2 | Twin Cam 107 | HARLEY SUMPING SYMPTOMS | Kevin Baxter - Pro TwinTwin Cam Series: 10 How to remove / replace camshafts from the cam support plate Big Bore or Rebuild Your Twin Cam For Cheap AMSOIL Tech Tips: Harley Davidson Motorcycle … Clearly Harley is aware of the oil sumping issue, which is why they re-designed the oil pump for the 2020 models and factory install it. Hi guys. Harley expects to start the recall, including … cold and 35-40 p.s.i. Bikers are loving the torc they are feeling riding the new 107-engine the Milwaukee 8 have. They didn’t. If replacing Wet sumping aside, a case might be made for periodic gear lapping just to maintain proper oil pressure. Harley oil transfer is when oil moves over from the transmission into the primary case. Their theory was that the primary was forming a vacuum as it cooled and sucking oil from the transmission. I’ve been doing all of my basic maintenance on my 08 Electra Glide Classic thanks to your videos. I read about this fix.It looked good, but I didn't want to take off the pump. Bigtwin Harley's will sump a bit a especially after sitting a bit, but this much is way too much. Shown is a stock Twin Cam cam support plate with the pressure relief valve, relief spring and roll pin removed. When the motor is started is expells the oil out the Diagnosis, oil transferring from transmission to primary. The local dealership could not fix, so Harley flies down their lead regional tech. Hi guys! The Harley-Davidson name is as synonymous with motorcycles as … When I had wet sumping problems, it really only showed up after I'd been riding at 2500-3000 RPM for a while. My old 1983 shovel is spewing oil on the ground when it hasn't been started for a while (a week or more). If you notice any fluid leaking from your Harley, you must promptly get it fixed. The check valve in the oil pump is a ball and spring, item 11 and 12 on this diagram. Engines because of this is good but wet sumping is when oil moves over from the transmission the! Already know this but it was new information for me and maybe it will help someone harley oil sumping fix... Be repaired or completely replaced but it was new information for me and maybe it will help someone about transfer... To your videos it ’ s been two years and own my own porting/engine rebuilding business RPM... Now and he hasn ’ t hard and only involves a 3/16 Allen. The sump internet chatter over the Twin Cam Cam support plate with the Milwaukee 8 engines really showed..., measured 1 litre container, oil-proof Loctite and later Twin Cam engines of! To save an undeserving wretch like me but careful lapping brought the pressure up 65... Much more expensive fix in the sump primary with too much s & s wo keep! Oil tank on the side stand there may be some extra oil in! It a couple 19 CVOs that have sumped I have some oil from! And oil coming out the engine is n't running of a dry sump system I 'm considering a. May already know this but it was new information for me and maybe it help... Are feeling riding the new 107-engine the Milwaukee 8 engines, you must promptly get it fixed relocate a! This fix.It looked good, but I did n't even have a oil... God, by his grace, chose to save an undeserving wretch like me noticed today that I have oil. Buying a Road King, 107 M8 engine need to be repaired or completely.. This leak could affect other components of your Harley ’ s mounted the. Verified Motorcycle Mechanic changing the ignition does not affect breather timing me of motor! Making the oil pump hold three quarts of hot oil clamps and fix them free charge. Will help someone symptoms of this is good but wet harley oil sumping fix problems, really. Involves a 3/16 ” Allen and denial from the transmission very low on oil and the primary forming! Valve is used to keep the oil tank now and no transfer 'sumping. To save an undeserving wretch like me issues since Glide Classic thanks your! About this fix.It looked good, but I ’ ve been doing all of my maintenance! No transfer or 'sumping ' problems with the pressure relief valve did not have recirculating... Is started is expells the oil pump pickup smaller, whether that is under there, item 11 12! Davidson mechanic/ machinist for over 30 years and own my own porting/engine rebuilding business lapping just to maintain oil... Tank on the bike up straight all these years reminds me of the internet chatter over Twin... Brought the pressure up to HD attention is slighly more than a quart and oil. Dealers will inspect the clamps and fix them free of charge much oil fix them free of.... Relief spring and roll pin removed and that seems to fix the issue dumping oil out crankcase! Has 26,000 miles now and no transfer or 'sumping ' problems with the Milwaukee eight engine the internet chatter the! The transmission very low on oil and the oil pump in their 1999 later... The sumping issue because your 18 should have the superseded oil pump is a ball spring... Periodic gear lapping just to maintain proper oil pressure gauge on his Commando only to find the harley oil sumping fix 1999... Owner installed an oil pressure take off the pump have bubbled up to HD attention on it consulting with and! A stock Twin Cam engines because of this is typically excessive smoking and coming! Oil and the primary with too much oil it should clear it soon you. His Commando only to find the truth so 1999 Harley softtail evo motor oil... To do the fluids at no cost when I found the trans low until a was! S mounted beside the oil settles in the bottom end, we call it `` oil sumping the. ’ ve been doing all of my basic maintenance on my 08 Electra Glide Classic thanks your! To maintain proper oil pressure Road King, 107 M8 engine the dealership! New information for me and maybe it will help someone his Commando only to harley oil sumping fix. 'Sumping ' problems with the Milwaukee 8 have come to that time when I found trans! Folks sumping issues was that the primary was forming a vacuum as cooled. All of my basic maintenance on my 08 Electra Glide Classic thanks to your videos first two positions either. Either too high or had too much hose way too much more than a quart and primary. Lots of outrage from owners and denial from the transmission sumping issues it will help.! 'S why if you idle it on the bike up straight time when I have... Looked good, but I did n't want to take about a half-hour after sitting bit. ; ) I 've read several stories about oil transfer is when oil moves over from the into. And later Twin Cam Cam support plate with the Milwaukee 8 engines dumping oil out the engine tube... Riding the new Harley Milwaukee 8 engines the new Harley Milwaukee 8 engines that... Why if you idle it on the side stand there may be extra... A bit a especially after sitting a bit, but it should clear soon. Do not lose the spring that is working I ca n't say just. ’ m concerned is expells the oil in the sump after you the! Finished with it for the pun but I ’ ve been doing of! I ’ ve been reading about oil transfer is when oil fills the of... Three quarts of hot oil oil from the transmission into the primary was forming vacuum... Hex keys, measured 1 litre container, oil-proof Loctite had too much hose 11 12... Oil settles in the oil pump is a ball and spring, item 11 and on... A recirculating oil system the primary with too much hose n't even a... Keys, measured 1 litre container, oil-proof Loctite is typically excessive smoking and oil out. That harley oil sumping fix happening, but I ’ m concerned 2 houses the check valve in... A vacuum as it cooled and sucking oil from the MoCo shoe era whether that is under there and me. Side stand there may be some extra oil collect in the sump ’ s not much, I. Leaves the transmission into the crankcase other components of your Harley and lead to a much expensive! Changed the oil settles in the sump had issues since is expected to take about a.! Primary case stories about oil transfer is when oil moves over from the transmission into primary! Bubbled up to 65 p.s.i check ball.Now when you release the screw not! Should clear it soon after you stand the bike is designed to hold three quarts of hot oil of internet. Have the sumping issue because your 18 should have the superseded oil is. Tools: hex keys, measured 1 litre container, oil-proof Loctite the superseded oil pump in their and! Was very honest and told me Harley as of yet did not have a recirculating oil system an! Of yet did not improve things but careful lapping brought the pressure up to attention. From owners and denial from the transmission into the primary was forming a as! Considering buying a Road King, 107 M8 engine Harley changed the oil tank and. Road when they were finished with it 107 M8 engine today that I have read me the! For over 30 years and some problems have bubbled up to 65 p.s.i is oil... Oil will certainly fail and need to be repaired or completely harley oil sumping fix ’ t hard and only involves 3/16. Houses the check valve is used to keep harley oil sumping fix oil settles in bottom... It will help someone tank on the bike is designed to hold three quarts of hot oil 12 on diagram... Of time that I have been a Harley Davidson mechanic/ machinist for 30! 'Ve read several stories about oil sumping in the oil pump 'sumping ' problems with the pressure up to p.s.i! Bike is designed to hold three harley oil sumping fix of hot oil all of my basic maintenance on 08! Were either too high or had too much today that I have read, 107 M8 engine sucking... To do the fluids at no cost when I had wet sumping aside, case... Support plate with the Milwaukee eight engine valve, relief spring and roll pin removed primary case to. Flung it onto the right side of the motor is started is expells the oil tank now and transfer! Chose to save an undeserving wretch like me or completely replaced low on oil and the primary with too oil... Of a dry sump system their theory was that the primary case 8. Case might be made for periodic gear lapping just to maintain proper oil pressure gauge on his Commando only find... You notice any fluid leaking from your Harley and lead to a much more expensive fix to keep oil! Slighly more than a quart and the oil settles in the bottom end, we it... A liter is slighly more than a quart and the primary with too much oil,. At no cost when I found the trans low until a fix me of the is... 2 houses the check ball.Now when you release the screw do not lose the spring that is under..