The bearing are also 40% larger than OEM bearings leading to even longer pump life! The Raw Water Pump. Raw Sea Water Pump for Mercruiser Marine 4.3 5.0 5.7 8.1 L Belt Driven Impeller Engine Cooling 16 1 offer from $325.00 All Metal Raw Sea Water Impeller Pump with Pulley for Mercury Mercruiser 4.3, 5.0, 5.7, 6.2 L, Replaces 8M0137216, 46-8M0118067, 46-862914T10, 46-862914T3, 46-8M0122655 10 1 offer from $375.00 maybe change the oil only if the pump is removed for service. Raw water INLET must run up the front/port side of the engine . For obvious reasons, this caused problems when the hose nipples rusted off. Kit contains the replacement sea water pump body, impeller, plate, o-ring and attaching hardware Quicksilver impeller elastomers provide improved flexibility across broad temperature ranges throughout the boating season Made from two-step phenolic resin compound for strength and durability Serving low prices with virtual cooking lessons They're suggesting placing a raw-water pump with a through-hull fitting on the front of the engine, and basically bypassing the outdrives water pump completely (as far as engine cooling goes), saying this would be less expensive than a new drive Only $153.00! Hardin Marine is the first to bring a engine specific sea water pump for the popular LS series of engines. if it came apart it could be blocking before the pressure sender. $349.99 . Supporting Member. Mercury then updated the pump design to include a hard plastic rear plate assembly. Add to cart. The impeller should be changed every year and that is the perfect time to. If the Power Steering Pump is Mounted on the Port Cylinder Head, This Kit Cannot be Used Unless Power Steering Pump is Relocated. Crank driven raw water pump. No leaks new sensor and impeller.goes fro 16 to 4 and alarms. Either way, none of that matters. A 6.2-liter V-8 engine with unparalleled torque and acceleration to get you on plane quickly and smoothly. There is a ball valve on the through-hull. Replaces a sierra #18-3600 and Mercruiser 46-72774A32 and . 04-30-2018, 05:06 PM. About an hour later , starboard refuses to start. #16: 32-864478: HOSE, T Fitting To Trans Cooler (1 required per . it is actually set that way from the factory and is designed to function correctly that way, this means first check to be sure there are no problems such as raw water pump damage/impeller, flow correct from drive and no restrictions, the next common problem is exhaust, manifolds, risers etc, next is a common problem the impeller wears out and While hard to check the water inlet from the out drive and up thru the transom assembly can also be worn or cracked and can be the cause of a air leak or a cooling issue. New impeller won't pump water. HOSE, Sea Water Pump to "T" Fitting (1 required per assembly) 32-864477 - Hose [ More info] $44.17 Available to Order: Usually ships within 10 days. Post Cancel. Re: mercruiser water flow diagram. outdrive that is bad, and keeping the water pump from pumping enough volume to keep the engine cool. If I am correct, my overheat problem has to be between the raw water intake and the brass water pump, otherwise water would be coming out the exhaust. If the boats in the water don't forget to install and secure a plug in the water intake hose. The most complicated aspect of the task is physical access to the pump. Mercury 1963-1998 Water Circulating . SEAWATER COOLED MODELS - 6A - 7 Cooling System Flow Diagram MerCruiser engines with standard cooling systems use seawater (water in which the boat is being oper-ated), to remove the heat given off by the engine. Here's a simple test to see if the problem is from the Y fitting being installed on the inlet side of the raw water pump. Hello all, Just purchased a 2004 Rinker 290 for a really good deal, survey and sea trial showed issues, but they were all minor, I took care of all of them in the last few weeks, dumb stuff like shower sump, AC raw water pump, trim/tilt rams, water heater, etc., so all good there. Bravo II raw water pump issues. Boat will run a bout two hours and starts to loose block water pressure. HFP-512-T3 Quantum Fuel Pump +Tank Seal/Gasket Replacement for Mercruiser Alpha Bravo/Mercury 3.0L Jet Racing Outboard (1994-2002), Replaces 808505, 808505T01 Product Description & Features: Drop-in replacement, Read more. I have no problem with this and even know Mercruiser recommended it. 13-35048. Select your product then select your serial number range to locate your parts diagrams. The aluminum pieces from the impeller took out the two seals on the front of the camshaft and all the coolant went into the engine block and I spun two bearings on the crankshaft. This has a pair of Mercr 5.7 efi's driving Bravo3. LOCKWASHER, (.375), Split lock (1 required per assembly) 13-35048 - LockWasher - Priced Individually [ More info ] $1.20. dogwspts . I took pictures of the intake and out-flow hoses to be assured that they didn't get . I'm thinking I might cut sum custom bolts with the right shoulder to secure the pump. Mercruiser makes a special socket that you'll need to take the drive apart after you've removed it from the boat. The best way to tackle such a problem is to first consider the obvious. You might check for air leaks between the drive and the raw water pump (a piece of clear hose between the intake hose and the water pump.) Mercruisers official position is that the oil does NOT have to be changed. Parts for MerCruiser 350 Mag MPI MIE Standard Cooling System; Parts for MerCruiser 350 Mag MPI MIE Standard Cooling System. Mercruiser V6 V8 Bravo Raw Sea Water Pump V Belt 46-807151a12 Sierra 18-36001. Revise Search: All Models > MX 6.2L MPI MIE > 0M310000 - 0M316999 > Sea Water Pump Assembly. Stainless Steel Gen 7 Plus Sea Pump for Mercury 350 Mag, 496 Mag / HO, 8.2L Mag and 502 Mag (No Pulley) The NEW and IMPROVED Gen 7 Plus Sea Pump now includes dual seals and dual bearings. The 470 has an aluminum block and a cast iron head. WE ARE IN NO WAY AFFILIATED OR SPO. Next time out, prior to starting motor, crimp the hose to the heater, right next to Y fitting (hose clamp pliers or two bolts & vise grips) Start engine. A stuck thermostat can also cause an overheat condition. Previous image. Next image. Verified purchase: Yes | Condition: new | Sold by: 350jr (0) (0) by seamarkmarineinc Sep 28, 2021. Available to Order: Usually ships within 10 days. So visually check this connection for any issues. . If the lever is straight up the valve is open. Only after the stat opens, would water go into the engine. Remove the sender and clean the debris. The pump uses Hardin Marine's Extreme Lifetime Series stainless steel impeller housing as well as a proprietary short body construction that allows the necessary access or clearance . WELL heres where it gets funny it also say that if there is NO markings (in/out) then the connections should be opposite. Step by Step How-To instructions for locating and removing the blockage following a sea water pump impeller failure on a Mercruiser 502 Magnum Marine Engine. Briefly ran my 5.7 merc at idle in the shop after installing a new impeller with my muffs attached but there's no water flow at the exhaust. Here's the rub literally. You didn't give a model year or raw/closed cooling, but maybe this will help. MerCruiser 496 mag (h.o. When water leaks into the fuel side of the housing, it can cause the low-pressure and/or high pressure fuel pumps to fail, as well as potentially causing damage to rails, injectors, and other engine components. Took the 330 out yesterday with the family. Remove the thermostat from under the thermostat housing and replace it with a new one. $344.92. Good Product. The new plastic rear plate helped but the pump was still difficult works great--- no problems on installation. Symptoms were simply stalling out on the water and then losing power and needing to pump the carburetor to get going. Part Number 46-44292A3 Alpha One Water Pump Base (Fits Alpha One ONLY) for $ 32.00 Part Number 46-57234A1 PreAlpha One Water Pump Base (Fits R style with the pre-load pin) for $ 30.00 Part Number 817275Q4 changes to 817275Q05 For Alpha Generation 2 Drives. MAKE ABSOULTELY sure that ALL the air is off that single point drain system, or it will open the system and allow it to suck air. Order online for discounted pricing. MerCruiser 7.4l bravo (gen. v) gm 454 v-8 1992-1996 sea water pump parts. March 12, 2022. I have a 1984 19' Cobia with a Mercruiser 485 I4 engine. Not being a fan of the hard-to-reach mounting location of the Mercruiser pump, I replaced it with a crankshaft mounted 'Johnson Pump F6B-9 Impeller Pump'. MC320 Mercruiser 4.3/5.0/5.7 GM Based Engines w/ Serpentine Belt, Year 1997-20011/2 System Freshwater Cooling Kit Which Cools the Engine Block Only. The engine is NOT overheating Answered in 16 minutes by: 11/15/2010 The water pressure is read on the sea water pump. Engine type V8, 2-valve/cylinder pushrod. Shut it down after 30-60sec and I'm stumped. Add to wishlist. important_devices: Order online, get free downloads* important_devices: Order online, get free downloads* Fast Trackable Insured Shipping. Conclusion: Whether you have an impeller fail which then leads to overheating or you have a blockage in the cooler that leads to impeller failure you should always check the complete inlet and outlet flow paths to ensure there is nothing blocking the system from good water flow into and out of the water pump. Buy a genuine Mercury Quicksilver or aftermarket part. This small, round disc has spinning blades that move water through the unit. No big deal. Parts for MerCruiser 4.3L MPI Alpha / Bravo Sea Water Pump Assembly; Parts for MerCruiser 4.3L MPI Alpha / Bravo Sea Water Pump Assembly. Step #1: Check the Water Pump Impeller. Flush water through the engine backwards. Only $50.00! Find an after-market pump (eBay or otherwise) 4. HP / kW 350 / 261. 2001 Bayliner 2452 Thunderbolt 350 Bravo II. . Perform the same maintenance on the risers. In my opinion, they're highly unreliable. Pull the Seapump out and check the impeller. http://www.perfprotech.com is loaded. You need to replace it at least every season. Some experts advise you to remove the impeller from the raw water pump, lubricate it with Vaseline petroleum jelly, and put it back in the pump. The sender is on the side of the raw water pump, here is a diagram of the pump. HOSE, Sea Water Pump to Water Drain (1 required per assembly) 32-863036 - HOSE [ More info] Unavailable #2: 54-815504222: CLAMP, Worm Gear (1.98 DIameter), Hose (12 required per assembly) . If it fails, it can cause big problems. Symptoms were running normal temps at idle and low engine speeds, raising rpm above 1500 would cause pump to stall and seawater pump to flood thermostat hous. Overheating is a problem which can be diagnosed through a process of elimination. Bravoitus restriction of water flow through the tube from out drive to raw water pump, 2017 220S 4.5 250 Mercruser Bravo 3. MerCruiser Complete Sea Water Pump Kit (46 8M0137216) SKU: 8M0139995 Categories: MerCruiser Water Pumps, MerCruiser Water Pumps Tags: Bravo Water Pump, Sea Water Pump, Water Pump. The belt driven Mercruiser Raw Water Pump now uses Kit # 46-807151A14 for $128.00 Inboards Mercruiser MIE Inboards use a belt driven raw water pump. Most circulation issues and overheating engines are caused by a faulty water pump impeller. change the lube in the pump. Got to a fishing spot , dropped anchor and killed the motors. A new Westerbeke pump is $480.00 and the rebuild kit is $130.00. And there's always a fear of burning it if you don't have good water supply. I know I have to use bushings to match the hole diameter in the pump mounting plate to the bolts in the harmonic balancer. Go. Revise Search: . Registered. Mercruiser 454, 7.4L fuel pump lubrication. Use your slotted screw driver or 5/16" nut driver and loosen the clamps to the two water hoses on the back of the Raw Water Pump. Top. Then replace the cover to the pump housing, but leave the cover . Use a metal rod to knock rust and deposits loose from the interior of the manifolds and flush with water. The plastic water inlet connection for the hose can also crack and be the source of a air leak into the raw water line. Mercruiser 470 cooling modification. They are pressure ports. Pump will fit GM 4 and 6 cylinder inline engines. Replace the entire pump assembly: however, none of the Mercruiser parts dealers have the pump in stock as apparently there is a "casting issue" with the manufacturer and they have been backordered since June or earlier with no stock expected anytime soon.. 3. Reply. Changing an impeller, on many engines, usually takes less than 20 minutes even if you are fairly slow. For obvious reasons, this caused problems when the hose nipples rusted off. Try to pry off the hoses without destroying them. Part Options Stainless Steel Gen 7 Plus Sea Pump for Mercury 350 Mag, 496 Mag / HO, 8.2L Mag and 502 Mag - With Pulley 625-413 + Option (s) The right shoulder to secure the pump can be diagnosed through a process of elimination the perfect time to to! Purchase the model with PULLEY PRE-INSTALLED ( 625-4131 ) by 1 with the right shoulder secure! Range to locate your parts Diagrams the cover to the cooling system by means an Hose nipples rusted off stuck thermostat can also be from a more serious reason such as a bad pump The hose nipples rusted off Mag ( H.O run up the front/port side the! And Mercruiser 46-72774A32 and ) then the connections should be changed every year and that is the perfect to Join Date: Dec 2013 ; Posts: 5904 # 9 2 seawater,. 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