Mercruiser outdrive leaking Oct 11, 2009 #2 The gear lube monitor was empty after recently de-winterizing the boat and replacing the sterndrive lube. It is an intricate piece of machinery, consisting of several key components that work together to ensure smooth operation and efficient performance. It's not the gear lube line itself - seems to be more internal. Alpha One Oil Leak. Suspect a missing or damaged seal at the drive to transom housing. Gear lube depletion in reservoir Mercruiser alpha1 leaking oil from a drain hole in front between upper and lower unit. I get water faster when cruising verse when doing more swimming. If you dont know how to or understand how to then you have no choice but to bring it to a dealer/authorized repair Mercruiser Sterndrive Forum . I am getting water in the gear oil. There seems to be oil all around the gasket area where the outdrive bolts on. The Mercruiser repair process involves pulling the motor and transom assembly to get to the steering pin. Sounds to me like it could be somethig with the exhaust y pipe, but it could also be many other things like a rotted transom causing the gimble ring seal to leak. When I Here is a video (It's the sound that's important) of my outdrive. QC said: You really shouldn't run it tilted up like that anyway. Came back a week later it was all drained in to the bilge. When I put the boat back in the water there is a leak coming in the boat where the outdrive connects to the transom. Joined Mar 9, 2023 Messages 532. 0 MPI with Alpha One Gen 2 drive with 250 total hours. If the bellows have been leaking, the drive might be stuck. 3l mercruiser with alpha one gen2 drive. I can see that water is slowly coming in at the bottom of the outdrive where it meets with the hull, there appears to be a gasket leak. 5 Bravo III. Leaking shift rod seal. Supporting Member I noticed a small oil slick behind my boat last weekend when I put it in the water, from up on the lift. It's a straight forward job, but a tad tough to follow in the manual. MarkSee Lieutenant Junior Grade. aka Kevin 2007 2575RL Super Sport Lower unit Mercruiser Out drive is leaking gear oil out the water intake after replacing the water pump impeller By chatting and providing personal info It takes roughly 1000 bucks in special factory tools to fully disassemble the sterndrive and reseal it, so unless you are willing to buy all the tools, you would have to take it in. Jul 3, 2008 #1 OK, I think I must have screwed something up pretty severely. ) "Hello everyone. I have all the special wrenches etc. Staff member. Don S Honorary Moderator Emeritus. Joined Sep 10, 2010 Messages 1,172. As i said earlier, the only way to check a outdrive for leaks is to pressure check it. A Mercruiser outdrive is an essential part of a boat’s propulsion system, responsible for converting the power of the engine into movement underwater. 0L Mercruiser and Alpha outdrive. To see the leaks ==> check pic's (pdf format) (after one or two minutes inside water the leaks appears. Thread starter enginesilo; Start date Mar 16, 2015; E. I do have some experience working on Gear oil leaking from lower unit of Mercruiser. Clean the mating surfaces and replace the o-rings. Next I did t have a lot of time so I did not experiment to see if the leak changed if the outdrive was trimmed up or turned left or right. I was cruising nicely along an open lake running about 4,000 RPM. When I picked it up yesterday I saw this oil leaking out of the water intake on the sterndrive on both sides. Re: Mercruiser Sterndrive 1973 HOw to replace or clean the trim pump Those four bolts hold the control valve to the bottom of the reservoir. 3 Mercruiser and outdrive with 125 hours. Similarly, if you notice water leaking Mercruiser Sterndrive Forum . Looks like around the mounting plate but what about boots and bellows. Water leaking from the Sterndrive At the end of the trip when the boat was back on the trailer I filled up the reservoir again. Thread starter 2004 searay; Start date Mar 29, 2023; 2. Just had lower unit water pump. What model drive? There is no water leaking when on the muffs only when in the water. It’s basically water getting into the bearing grease and rusting the bearing. So Commander, you were right on. I'm new to this board, looking for some expert advice on finding a major water leak. When I removed the Leg last week, it wasn't leaking. When the input shaft seals leak what happens is all of the gear lube in the Mercruiser Bravo 1 Sterndrive. 7L Carb. 7 Mercruiser Alpha One Outdrive The slow stream of water enters the boat at the bottom and center of the inner transom plate between it and the transom wood. When water gets in the drive it tends to condensate on the top bearing. The leak was found through the small seep holes on both Mercruiser Sterndrive Gear Oil Leaking by Prop. Apr 10, 2019 (at proper level) then you do not have a gear oil leak from outdrive. It appears that the oil is leaking below the through hull fitting. 5. Was enough water to make me very uncomfortable. So if you are seeing leaks of outdrive lube (and not engine oil) inside the engine compartment, then it is likely the tubing that is the problem. Nov 11, 2012 #1 I have a 2004 Sea Ray with a 4. thanks . All dry. Thread starter Tunabass; Start date May 11, 2018; 1; 2; 3; Next. THe rubber things you are referring to are bellows. This bellow's main purpose is to prevent water from leaking into the boat. 61 labor was $150. M. The drive system is essentially the boat's transmission. vr5200. 2001 bravo 3 recurring oil leak. However, a great many, especially those under the greatest load, do not. marktaco New member. I recently purchased a 1986 Wellcraft 190 American with a Mercruiser 170 and Alpha One outdrive. Then a loud noise started and I shut it down. They are replacing all of the bellows and I'm getting an auto bilge pump put in since i keep it in the water. I don't know these outdrives that well since I've only split mine 1 time, but I changed the shift shaft bushing (This is where my leak was), the removed replaced the original Bravo 3 with a rebuilt drive & now find gear oil leaking from the water intakes on the lower housing. The oil quantity in the resovoir goes down to the fill mark after about 2 or 3 hours of use. It is leaking between where the duo props are and the lower unit housing. Then I noticed gear oil leaking off the lower skeg. What would be the best product to use to seal up this leak? i know its not leaking fast just a slow steady leak. I have installed new gaskets. Is this white line broken? OR does the clamp from one end just need to fit back over it? Anyone know what this line is called? Looked it up, but can't seem to identify this specific one. Thread starter marktaco; Start date Nov 11, 2012; M. I replaced the water pump assembly in the lower unit of my MerCruiser Alpha 1 sterndrive. One back the oil is at the bottom of the full container. I had gear oil leaking into bilge. Hey y’all. When bellows crack, water can seep into the boat and soak your output shaft and gimbal Hello my boat is a 23ft formula with a 351 mercruiser. I'd appreciate comments and information as to what this means. Further examination revealed that water is leaking past the gimbal housing into the boat. Mercruiser 5. 7L Mercruiser/Alpha One drive. 11,933 Satisfied Customers. I replaced the outdrive with a used unit and everything was running fine for about 45 minutes. Thread starter You will find out when you change the seal that is leaking outdrive oil into the bellows area. H. Jun 11, 2009 #4 Re: Understanding Mercruiser Outdrive Sealing Systems Start a new Gear lube leaking from your Bravo Three outdrive can indicate a problem with the gear case seals. When we leave the marina for a week or two when we. 0 Alpha One Gen II. richa311 Seaman Apprentice. If Mercury MerCruiser Sterndrives & Engines . Outdrives usually come off on an annual basis for u-joint inspection/greasing. It's probably full of gear lube and leaking into the bilge. Aug 14, 2019 i have a alpha 1 outdrive and my gear lubricant is leaking out the prop. The gear lube has its own plumbing and path into the top of the outdrive along the starboard side of the bell housing. Lower unit oil leaking into bilge. Looks like the outdrive is only 6 bolts and the trim actuators, but what its attached to might need to come off too, is that the "bell housing?" Need to order order the tool for special bolts. Thread starter richa311; Start date Jun 29, 2015; 1; 2; Next. Oil spots under the drive when the boat is dry stored. If you have done a water pump job you are right there just need to lift the pump housing off and change the oil lip seal The Mercruiser Bravo 3 is one of the hottest running outdrives in the business; well known to exceed 300°F oil temps during operation. I reciently found that the boat was leaking water around the gasket where the gimble housing attatchs to the hull. (3/8-16 threaded hole) make sure it is sealed tight and pump air into the drive to 15 psi. ( I think leaking out of the hose top and dribbling down) Now a couple of questions : Re: Alpha 1 outdrive water leak The fella who mentioned changing the drive bellows every two years is on to something. Thread starter trking2; Start date Aug 3, 2011; T. We fill it up and head out, run it for the afternoon, come back and haven’t used any noticeable amount of oil. Oil Carrier Seal Leaking-Pressure Testing. You could reseal the entire outdrive with new seals, That does not guarenty a leak free drive!! A simple tear or defective seal will leak. 1 of 2 Go to page. R. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician. lombard Seaman. Water leaking into the boat. Mercury MerCruiser Sterndrives & Engines . 7L power pack motor and a rebuilt Mercruiser Alpha into my nephew's 1989 I have a 2005 Glastron MX175 with a Mercruiser 3. mhcrra1 New member. Joined Jun 26, 2008 Messages 62. Joined May 19, 2015 I am trying to get a sense of what's causing this water leak. Thread starter webb24; Start date Apr 10, 2019; W. I would pressure test and see what seals may be leaking. any suggestions. I keep having water drip through the shift cable onto the valve cover. Re: Gear oil leaking out of water intake on lower unit of an alpha one outdrive! I have what sounds like the same problem. That’s a sure sign. Either a hole in it or disconnected at one of the hose clamp. I have a Mercruiser with a 350 I have a Mercruiser with a 350 and Apha II outdrive. Place the shifter into forward gear and remove the outdrive. Shift cable bellow was leaking a little water when the engine was up in trailering position. I am sure that I will remove lower half of drive, to get to water pump area. 0L Alpha 1 Gen 2 and 200 hours. Just bought boat and previous owner said gimbal and bellows had just been replaced. Thread starter 1985 Century Mustang; Start date Jun 9, 2023; 1; 2; Next. it seems to leak down to the lower unit and stop. If trailered or kept in a boatel or lift, Raise outdrive up to highest position and look at the largest bellow under there to see for damage. I could never find the leak. , the pump shaft seal is defective and water or antifreeze is leaking out of the system. From looking at all the pictures of the outdrive parts, I would think this would have to be one of the bellows or possible something else like shift shaft??? This is a 4. Hope this helps Re: Mercruiser 3. you seem to know how its put together. This is a Mercruiser Alpha unit on a Mercruiser 228. I cant afford to pull the whole drive off and repair it like that. On initial launch of the boat, i noticed the boat taking on water as soon as the rear was lowered into the water. Within a couple of minutes the lube started leaking out the small water port in front of the intake screen on port side. "My Bravo III drive has an oil leak that the marina is having trouble finding. I was reading the the quick connector (part #22-861163) that connects the reservoir hose to the through transom fitting (part #22-861150t02) could be a leaking issue. Any ideas where my oil The correct way to find a seal leak is to drain the gear lube. After the rams and the six mounting nuts are removed, the drive should come off. if the bottle is low and the gear oil is greenish blue as it should be then no water has made its way back up the hose or thru the cap. By chatting and providing personal info, you Your Mercruiser Alpha One is a sterndrive unit that utilizes an engine for power and a drive system for propulsion. Disassemble repair and re-assemble. Reply. outdrive oil leak in the bilge. I apparently have a very slow outdrive oil leak. Removal will reveal four "o" rings (I believe they're #7's) there is no rim gasket between the control valve and the reservoir. mercruiser bravo 3 outdrive. The main shaft seal in the lower is in the bottom of the of the pump housing. Completely different system. Alpha 1 Gen 2 Drive Oil leak where to start. Get a hand air pump with a gauage on it and screw it into the other hole. All my maintenance troubles were attributed to the outdrive, more specifically water in the drive oil. My outdrive serial number is OF317539. Well no speedo not leak. mercruiser lower unit outdrive leaking oil from water intake ports . Saw dripping on the ground of drive lube oil. 0 L - YouTube . Thread starter onebighead; Start date Feb 13, 2015; O. Both will allow gear lube in the shift linkage I have a 2005 Bayliner with a 3. The power steering fluid is leaking, but to where???? I just bought the boat and noticed the PS reservoir was empty. Mechanic's Assistant: The 2nd is if the input shaft seal on the sterndrive is leaking. Nov 11, 2012 #8 Re: Water leaking from the Sterndrive. They just changed both prop shafts because of excess wear ,(groove cut around both shafts at rear seal, possible causing leak), this did not stop the leak. 0 is leaking gear lube oil. Just firgure it was plugged from sitting on the beach. enginesilo it should not leak? I'm assuming it is the oil carrier seal that needs replacing? I have a mercruiser alpha one gen 2 sterndrive. In spite of this, most do run correctly for their lives. I have tried everything I can think of to try and stop the leak. Slice of Life Petty Officer 3rd Class I discovered a slow but steady oil leak from my Alpha One Gen two outdrive after starting it up for the first time this season. It has so far been the project I expected it to be! While working on changing the head gasket the other day, I noticed oil leaking from the rear of the boat. I raised it, let the water dry and inspected everything, assuming trim fluid from a trim cylinder connection. There is a gear lube reservoir and almost every time I check it, it's empty. Outdrive oil leaking into bilge. Joined Apr 17, 2002 Messages 71,035. If you develope a water leak into the bellows it can let water into the drive itself. Water comes in at a steady rate. 23' Glastron 5. MerCruiser Alpha One 1 Generation Two 2 Alp Gen 3. Go. 5L, auto) 2007 Triumph Speedmaster If oil is leaking out then water is leaking in. to 5. If they leak it will allow gear oil to leak into the bellows. dupont_spinner New member. It did not change with the engine HI, I have a 98 SEARAY SD with mercruiser 5. Refer to attached pictures to see where the drip is coming from. Alpha one gen 1 outdrive leaking gear oil in engine compartment. See attached picture. 0l-1988 It's usually the front seal of the drive leaking, either the yoke has a groove in it, or there was water in the bellows and the rust on the yoke ate up the seal. Just a thought for you. trking2 I. Outdrive oil leak! Hmmm, I was thinking the oil passed up through a small rubber hose between I found the leak on my Mercruiser 3. oil leaking out of water intake alpha 1 gen II. What next? Shall I go to dealer and get an outdrive gasket kitpull outdrive and grease the u-joints well etc and also get a new o-ring for the oil port? Will Mercruiser TC4 multipurpose grease work for the u-joints? I have a leak in my mercruiser pre alpha outdrive. The area of your circle is located near the upper and lower sections of you outdrive aka drive, leg, or in some cases unprintable names. if gear oil is leaking from outdrive you need to remove the drive, drain the gear oil and pressure check it and determine if there is a leak. Dec 25, 2010 #4 When doing my winter servicing on my 1988 wellcrat classic 210 with merc 5. Bondo Moderator. Is this a lower propshaft seal problem? It is not a slow leak. I replaced the gear oil and ran the motor last night with the hose and noticed warm exhaust water coming from where my shift shaft is. 0 Front Oil Leak. Contact us; Terms and rules Mercruiser Sterndrive Forum . It appears to be coming from the transom where the outdrive (gimbal housing?) attaches to the boat. B. The boat has never been in saltwater. Bt Doctur Silver Medal Contributor. 000€ (bellows,U joints, gimball bearings) to try to fix the problem (water leaking from transom inside hold), i don't want to take it to the mechanic's one more time. The front main seal of the drive is not really designed to hold water out as much as it is to hold oil in. I have since put about 1. Late in the summer I had to start adding gear oil to the monitor on a fairly regular basis. I followed the line from the reservoir to the transom fitting and found no signs of leaking. My power pack is an "07 Merc 5. After 2. The gear lube can be leaking or disappearing from several sources. I’ve had this boat (1994 Genesis 2002 cuddy 4. Help! Outdrive oil leak! Thread starter lombard; Start date Jul 3, 2008; L. I just removed my out drive and replaced the water pump and all the hoses including the bellows. In July of 2010, I hit a rock, taking the skeg off the bottom of the Mercruiser Sterndrive Forum . Next Last. 0L Alpha. leaking into bilge from outdrive steering swivel pin thru transom opening. Bravo 3 leaking water into bilge. Re: Small leak when outdrive is up Just heard back from the mechanic. webb24 New member. I had a GW 231 with an Alpha for 14 years. Stern Drive Oil Leak . Aug 14, 2019 #1 It has been non-stop with this boat this year! The leaking engine is the PORT one. If this outdrive weephole is spraying an amount of water out, that volume of water is not flowing Water can also leak into the drive if the Ujoint Bellows are leaking. All my bellows were new in August 2009. Post reply A complete inspection will require the removal of the outdrive. Joined Apr 17, 2002 Messages If I had to put money on this I would say it's the bellows for the CV joints on your outdrive that is leaking. Thread starter hardwired; Start date Dec 4, 2010; H that and the large oring are the only two items that keep the oil in the outdrive. Currently having a Mercruiser 4. The transom serial number is OL886317. 3 V6 engine). Jun 9, 2023 #1 I have a gear oil leak coming from the propeller. I kept it docked in thebrackish water of the Northern Chesapeake Bay. This made it leak into the drive bellow eventually making it back into the bilge. In the When I picked it up yesterday I saw this oil leaking out of the water intake on the sterndrive on both sides. The reservoir empties within a few hours after filling. I have a 1996 StarCraft 2010 with the 5. can it be sealed without removing engine? either from inside or outside? both oil and water entering bilge. alpha one gen 2 leaking oil from water intakes. Install one of the srews back in with its gasket. Turn out that the line to speedo had a crack. I was investigating a lower unit leak this weekend and can't find the exact spot where it is leaking. When boat is put in water, engine off, 1/2 gallon or more a minute pours into the boat center of gimble. 1985 Century Mustang Chief Petty Officer. I replaced oil seal part number 18-0577 (#17 in diagram. The outdrive on my 1995 Mercruiser 3. 3lx, alpha gen 1 sterndrive. 0L / Alpha one leak through transom? Yep, bout 75 according to the manual, so probably no sling needed yet. I then pressurized lower unit to 10 lb. Thread starter Slice of Life; Start date Apr 28, 2014; S. One afternoon notice the speedo had stopped working. Mercruiser Sterndrive Forum. onebighead Petty Officer 3rd Class I have an alpha one gen 2 outdrive that is leaking oil out the water inlets. Thread starter mhcrra1; Start date Aug 14, 2019; M. Noise at the back of the boat when turning hard. 0 and alpha one outdrive; I found milky oil in my outdrive & then found water in the bellows after deciding to pull the outdrive for a closer look I pressurized my outdrive with a modified fitting mounted on I bought a 1976 Century Raven 190 with the 250 CI inline 6 Mercruiser 165 HP drive system. This is my first boat and just finished the first season. An exploded view of a Mercruiser Bravo 2 sterndrive assembly. Jump to Latest I wanted to see if anyone had this happen to their outdrive. Never leak sitting in the water overnight. I have gear oil leaking between the transom and bell housing. The gasket was recently replaced. I just finished putting a new GM 5. Looked up in the drive and found oil coming down the lube hose which goes from the transom to the outdrive. 5 quarts into it, but as soon as the motor starts, the I have a 1994 Mariah Talari with 5. Thread starter seidh sounds like the problem i had,it was the line from the bottle to the outdrive on mine it was leaking where it was hooked to the outdrive, the hose was $ 1. troym Advanced Contributor. Put in an entire new kit, lubed everything up and installed the Outdrive Leak - HELP. The Shift Bellow: This bellow is attached from the shift cable at the drive to the transom plate. Water can also leak into the drive if the Ujoint Bellows are leaking. Today, after three hours use, I noticed several gallons of water in the bilge when I pulled the drain plug after trailering Mercruiser Sterndrive Forum . Looking inside the propeller, I could see some wetness The serial number for the outdrive is OL783082. is that the reverse rotation one? What are you thinking?? Reply. Jul 16, 2006 #2 "The oil seal on the vertical "The oil seal on the vertical shaft is bad. Thread starter Lower unit oil leaking into bilge Pull the outdrive and look in the bellows. and it held pressure until I spun the shaft. The Mercruiser repair I have an Alpha I Mercruiser outdrive in a 1996 Bayliner that is leaking oil from a source that I have yet to locate. im just wondering if 3M adhesive You have either a lower shift shaft seal defective and leaking, it's in the back of the upper drive, or the back cover seal ring leaking. It has a Mercruiser 5. Looking from the front of the motor, Left side down where the outdrive hooks to the engine. Re: 1988 Sea Ray - Mercruiser Sterndrive - Leaking water! Hello Shultas, Pics would help all involved. At the end of the day a bilge full of water. Customer: Mercruiser Alpha 1. Mercruiser Sterndrive Forum . Once in the bellows it will leak into the bildge thru the gimbal bearing. If the drive is stuck, tilt the drive up by hand and let the drive drop back Mercury MerCruiser Sterndrives & Engines . As you can kind of see in the picture (no judging - I didn't do any I have a 2001 Rinker Captiva with a 4. I have a Bravo 3 on a 2005 Searay Sundeck that is leaking. Alpha One outdrive water pump leaking water out weep hole. Went crazy trying to figure it out. E. Customer: Water leaking from outdrive 7. 3L Mercruiser sterndrive. I have a Bravo 3 gear lube issue. 0 Mercruiser with an Alpha 1 gen 2 out drive. Alpha one gen 1 outdrive leaking gear oil in engine compartment . Between the upper and lower sections is a O-ring for an oil passage between the halves that could be leaking. I have pressure checked hundreds if not a thousand outdrives, I am not causually suggesting this. When I pressure check the stern drive, it holds pressure. . Hope I’m posting this in the right area of the forums. While in the water, it leaks with both engine off and on. Thread starter dupont_spinner; Start date Aug 30, 2008; D. 1986 Seville (Mercruiser 170 Alpha One) 1968 Mercury Cougar (6. Joined Aug 31, 2004 Messages 62,321. 3/Alpha One) about a year now and several months ago when I went to winterize it, I noticed that the outdrive was leaking oil out of these “weep hole” type holes. There are aftermarket repair kits (JR Marine is one) that cuts an access Re: Mercruiser/Alpha one - Water Leak Problem I may be having the same water leak problem on my 1994 Alpha outdrive (4. I have separated the lower from the gimbal housing. Here is the steps to replace the seal. And it will leak around it even with the drive down. Aug 30, 2008 The only way to be sure of exactley where the leak is comming from is to have the outdrive pressure check with no gear oli in it. I'm n "Hello everyone. The boat was running too warm so I decided to investigate and found the water pump trashed. 2004 searay correction, im getting more info from my brother who found the leak, the oil is coming from the pisser hole at the top of the lower section on the front, right side not the water intake. Re: Outdrive Gear Oil in Bellows- MerCruiser Alpha 1/5. I drained the gear oil, pressure tested, changed out o-rings on the vent and drain plugs, and it still won't hold pressure. Pulled lower unit and it was leaking. Here are a few things you should inspect: 40 yrs. 1 of 3 Go to page. Tags: None. 00 there u go, good luck to ya . I have pulled the outdrive and replaced the large oring, the water jacket oring and the 3 orings on the U joint shaft. The gasket between the outdrive and bell housing was fine so it means the seal in the outdrive is bad. Repalce the line and been leak free since. Noise coming from the back of the boat. I had a slow gear oil leak (I noticed while it was in the water because the reservoir kept slowing going down) and finally had a chance to locate it. 0l/xl Alpha Gen 2 sterndrive. If it is leaking badly, you’ll hear a roaring sound coming from the back of the boat. ltqy nzakqabu jtqmii lkmchfl cuooxqh creju ookqz erj sapm cttwy fagcy aqipf eqzsgb agwynel gjf