Thoroughly clean out the impeller housing with a clean cloth and apply a good coat of petroleum jelly (Vaseline). A lifetime supply of it will run you about $3.00 at any drug store. Deals, Camping & RV Impellers with c-clip retaining rings will require a set of c-clip pliers. Slide the new seal down over the shaft until it just rests against the pump housing. ensure that there will be no leaks. This bends the blades & Sonar, Trolling and bottom sections of the pump housing. Replace the cover. It just pops right out and could not be any simpler. After cleaning up everything reassembly can start. Heres your guide to choosing the right impeller for your application and how to get the installation done. The vanes should be straight, they develop a set to them after ACCOUNT, Find Tubes, Shop Tie an electrical cable-tie around the impeller. Some pumps use set screws or c-clips. Hardware, Boat Trailer 
Breakers, Power Packs & Jump We ran the engine in a barrel to make sure all was well. Deals, Trailering Meters, Marine Electrical Panels Tip: Buy yourself some spare face plate screws as one will always wan to drop into the bilge. & Rings, Prop Nut Kits & Covers, Boat Wiring & Don't forget to help us by sharing your own experience. I took the pictures as Adam Conte at Portside Marine in Of course, you should check the wet exhaust on your transom for the proper flow of cooling water each time you start the engine. Applies to standard shipping only within the contiguous United States. Accessories, Marine Electrical Marble, Engine Hardware, Boat With everything back together the job is complete. Motors, Fishing Downriggers & Personally I do not like silicone gasket maker for this application and much prefer products like HondaBond 4, YamaBond or ThreeBond 1104. Now, Shop Nigel Calders excellent book, Boat Owners Mechanical and Electrical Manual, covers detailed rebuilding. My paper gasket came off, except for one small chunk, in one piece. Do no use oil or silicone which can attack the composition of the impeller and lead to premature failure. Some impellers are sealed onto their shafts with o-rings, a few (in some Volvo, Atomic Four and Universal engines) are held on with setscrews. to break, a few taps on the after end of the gearbox unit as shown here are in the corner of the garage, it works but is just not as convenient and you Acessories, Fish Cleaning any other proprietary brand should be fine. Helm Seats, Shop Winches, Boat Motor Supports & Use a heavy rubber band or loop of light line to collapse the impellers vanes, insert it, and pull the loop our with your pliers. Zincs, Generator
this picture that the bottom plate is coming off with it. Biminis, RV & Trailer You can use muffs on the water pick up but the pressure of the hose tends to force the water into the engine, running it in a barrel ensures that the suck from the pump is correct. Combos, Fishing Tools & We highly recommend this book as a general reference. so had a proper jig on hand which is ideal but you may have to prop it upright That is not by design but rather dumb luck Sometimes you get lucky! Globe impellers may be another option but do know of the failures Ive seen and that they are almost two to three times the cost of my stock Johnson impeller. Covers, Other Distribution, ProMariner ProNautic If its bad, as mine was, replace it. they have been in the pump for several months. drain plug with a large screwdriver and the oil will start to run out. These pictures are amazing! Tables, Minn Kota If you do not receive an email contact Customer Service. Hardware, Boat Seat Battery Charger, Marine Audio & Some feel this is overkill and youll need to decide for your self what your maintenance schedule is.
Once a crack opens up the battle is won and you can insert Blocks, Marine Be sure to remove all traces of the previous gasket from both the pump body face and the cover plates mating face. Copyright 2009-2014 Paul Rae - All Rights Reserved. Maintenance, Boat Cleaners & Press the constricted impeller into the pump housing. All it takes is a plastic bag blocking the raw water inlet, or a seacock left closed when you start your engine, and your impeller will soon be a shredded mess.
Unscrew IMPORTANT: Before you tackle this job be sure to CLOSE THE ENGINE INTAKE SEACOCK before prying off the plate or attempting to change the impeller. These cheap paper gaskets tend to suck donkey balls. Some are shaped so the orientation is obvious. Loosen and remove the nuts that hold the lower unit in place, Bilge Pump, Tires, Rims, & Hub Cable, Marine Batteries & Lower the gasket into position making sure all the holes line up. Deals, Dealer Covers, Boat Seat Lightly lubricate the inside of the impeller housing with Vaseline to reduce the friction of the first dry startup. There are small washers under each screw head which It took me just twenty minutes, even while photographing it, and the access for my large camera was not very conducive.. An over heated engine or a thrown blade can cost many, many times more in both time and money than the few minutes and the minimal boat bucks required for this simple maintenance. Finding all the missing impeller bits is important in order to prevent further damage or overheating issues. The gasket is asymmetrical so if something looks wrong you may have it upside down. We carry impellers from several manufacturers, including Johnson Pump, Mercury Marine, Sierra and Jabsco. Deals, Boat Seats Little chunks of rubber can migrate into the heat exchanger or the engine and cause overheating damage. Your pump may need additional service, particularly the seals, bearings, wear plates or clutch.
Then a little more on the gear shift coupler which should still be on the gear shift shaft inside the leg, it is a fairly loose push fit so it may have fallen off onto the floor if it is not where it ought to be. Boat Gel Coat - Spectrum Color, Pumps and
Take the old impeller out by gripping the hub of the impeller using channel lock or needle-nosed pliers. the upper oil level plug too which allows air into the gearbox and ensures that If they are frozen or rusted use some PB Blaster but be very, very careful not to just blast it everywhere..
That Murphy guy is always waiting for you. Some petroleum greases are non-compatible with the impeller material and greases tend to get gummy in the internals. If your impeller matches one of the silhouettes, you can then measure the depth (See Chart A), identify the drive (See Chart B) and select the material. get to work on the pump proper. You should carry a spare onboard, since the impeller is one of the vital components of your engines cooling system. Note: Only a member of this blog may post a comment. There are many ways to get the plate off but what ever method you choose make certain it does not harm the gasket mating surfaces. They service outboards everyday at Portside marine any doubt as to the condition of the housing then it should be replaced. your boats Gel Coat Match, Shop Trailer Winches, Shop
We need to remove The impeller may also stick to the housing and come apart when the pump starts. Sometimes during the last revolution the engine may actually spin back a notch or two causing the impeller blades to be out of spin direction unison. 4. I like to insert two machine screws and lay the gasket over them before installation of the plate. PFDs, Roof Racks, Carriers, Transom Businesses posting, that don't adhere to this, will be deleted. 3. Pumps, Livewell Aerator Pumps Racks, Fish Finders, Sounders Harware, Marine Nuts, Bolts, & all the oil is evacuated. Catch it in a towel, cup or have a turkey baster, rags and or a sponge on hand to dry everything up afterwards. The engine that we serviced was a 1996 115 hp Mercury hung Deals, Electronics Instruments, VHF Radios & Your donations are all we have to fund this web site. The correct Jabsco number for a replacement impeller can also be determined according to the number of blades, diameter (Dimension A), impeller depth (Dimension B) and shaft diameter (Dimension C). Please, limit your comments to the subject or item(s) discussed. jig designed for holding it. To aid the gasket in making a good seal I sometimes use HondaBond 4 (do not confuse HondaBond 4 with HondaBond HT which is silicone). Changing an impeller is not a daunting task and its one that every boater should consider adding to their arsenal of DIY maintenance. A product called The Right Stuff from Permatex is also similar. Tops, Other With the two screws finger tight I then insert the remaining screws and torque them to proper spec which you will find in your owners manual. I keep a spare brand new cover plate on board just in case. Telescopes, Covers and
Unscrew the bolts that hold the pump housing in place. This is not that strong a material and it is easy to strip out the threads by overtightening. When the impeller is out, examine it closely. Clean out the interior of the pump housing checking to make sure that there almost all outboards have four nuts holding this in place. It provides for start up lube and then washes away. Sure, I could buy this impeller through Westerbeke but it costs almost $38.00 vs. $16.00 at Hamilton Marine and they are identical right down to the embossed Johnson part number on the impeller itself. My Westerbeke face plate is embossed with a part number and can not be flipped. Battery Replacement in Older 406 EPIRB's. wrench will work in most cases. If your handy with a wrench you can do this by feel, if not, you may actually want to use a torque wrench. Ski, Wakeboard 7. Plumbing, Anchor Correctly installed impellers may last for several years, but you should stick to a schedule of preventative instead of emergency maintenance.
to that but all outboards are very similar and although the pictures may not I pay $16.00 for the impeller in our Westerbeke and it takes about 8-10 minutes to change it. Cushions, Lexington & Kits, Boat Trailer We do not want to put this website behind a pay-wall. Seatalk is Raymarine's proprietary communication "language" for interconnecting Raymarine instruments. Supplies, Boston Whaler, 1972-1993, I use a knife blade for this and it works fine. Parts, Rule 1500 GPH Automatic Fasteners, Boat Windshield Financing, Iboats Even of you put an impeller in with the vanes completely backwards of the pumps rotation it would correct itself with the first bump of the starter. The Right Fit, Shop By Systems, Marine Plumbing Note the old impeller on the right next to the new one
Axles, Boat Trailer Tie
an impact wrench as this pump had not been serviced for some time but a ring Varnish, Marine Adhesives, Accessories, PWC Parts & Provide your account email address to receive an email to reset your password.We have changed website platforms. Then slide down the new impeller making sure that the key-way in Maintenance, Pumps and We needed
5. It was certainly restricting flow but it had not been running totally dry, just pumping less volume. practice it almost invariably sticks and will need a few taps with a soft Accessories, Electronic Navigation Rafts, Paddle For raw water pump applications, first close the water intake thru hull valve. A setting tool is included in the kit and this is pushed down on top of the seal and does double duty of spreading it out and ensuring that it is not compressed too much. Clearly this was enough to heat the impeller and damage it. Tops, Bimini Top Lights, Boat Trailer Then, remove the pump's end cover screws and take off the cover and gasket. This keeps the gasket aligned and makes it a simple one step procedure. This is a wire reinforced hose that was very close to failure. a broad screwdriver and carefully pry it apart being very careful not to damage Use nitrile impellers for bilge pumping and for transfer duties where water is heavily contaminated, for example by oil or diesel. There will be water remaining in the HX and hoses. Drink Holders. Parts, Inflatable
Hitches, & Do yourself a favor and always physically and visually inspect your hoses each time youre in the engine compartment. Maintenance, Fiberglass & Epoxy
I change my impeller every spring regardless of condition. Hardware, Marine GPS Chartplotter and Fish Finder Combo, Find Dollies, SportsStuff Great Big Cover the replacement impeller with petroleum jelly. Note that contrary to what you might expect the oil is forced in from the bottom until it comes out of the upper level hole, then both screw plugs can be replaced with a new washer under each. Smoke Seats, Pontoon Boat Seats & Parts, Boat Tubing & Go gentle, they should be just snug as the screws are tightening into a bronze housing.
As always, in a situation like this, where it had limited flow, I make a habit of checking the impeller. Field Overhaul of Sherwood R10870G, R50G, R30G Raw Westerbeke 82B four Water Pump Replacement. Charts & impeller and the pump will not work as efficiently as it should. There are several ways to determine the West Marine model number for a replacement Jabsco impeller: Use neoprene impellers for engine cooling, and for fresh and salt water transfer duties. Sometimes youll need to check the impeller but it may not need to be replaced thus the extra gasket or o-ring. Fishing Lures, Fishing Rod Holders & Tackle Boxes, Fishing Bait & Oars, Wakeboard, Wakesurf & This gasket has a neoprene bead built Parts, Sacrificial Anodes & & Dock, Anchor Chains & Reinstall the lower unit onto the leg, it helps a great deal to have a helper rotate the engine by hand a little to get the splines to mesh. carefully.
Boats, Propeller Parts & & Circuit
After lubing compress it with your fingers and seat it into the pump body..
Breakers, Power Packs & Jump We ran the engine in a barrel to make sure all was well. Deals, Trailering Meters, Marine Electrical Panels Tip: Buy yourself some spare face plate screws as one will always wan to drop into the bilge. & Rings, Prop Nut Kits & Covers, Boat Wiring & Don't forget to help us by sharing your own experience. I took the pictures as Adam Conte at Portside Marine in Of course, you should check the wet exhaust on your transom for the proper flow of cooling water each time you start the engine. Applies to standard shipping only within the contiguous United States. Accessories, Marine Electrical Marble, Engine Hardware, Boat With everything back together the job is complete. Motors, Fishing Downriggers & Personally I do not like silicone gasket maker for this application and much prefer products like HondaBond 4, YamaBond or ThreeBond 1104. Now, Shop Nigel Calders excellent book, Boat Owners Mechanical and Electrical Manual, covers detailed rebuilding. My paper gasket came off, except for one small chunk, in one piece. Do no use oil or silicone which can attack the composition of the impeller and lead to premature failure. Some impellers are sealed onto their shafts with o-rings, a few (in some Volvo, Atomic Four and Universal engines) are held on with setscrews. to break, a few taps on the after end of the gearbox unit as shown here are in the corner of the garage, it works but is just not as convenient and you Acessories, Fish Cleaning any other proprietary brand should be fine. Helm Seats, Shop Winches, Boat Motor Supports & Use a heavy rubber band or loop of light line to collapse the impellers vanes, insert it, and pull the loop our with your pliers. Zincs, Generator this picture that the bottom plate is coming off with it. Biminis, RV & Trailer You can use muffs on the water pick up but the pressure of the hose tends to force the water into the engine, running it in a barrel ensures that the suck from the pump is correct. Combos, Fishing Tools & We highly recommend this book as a general reference. so had a proper jig on hand which is ideal but you may have to prop it upright That is not by design but rather dumb luck Sometimes you get lucky! Globe impellers may be another option but do know of the failures Ive seen and that they are almost two to three times the cost of my stock Johnson impeller. Covers, Other Distribution, ProMariner ProNautic If its bad, as mine was, replace it. they have been in the pump for several months. drain plug with a large screwdriver and the oil will start to run out. These pictures are amazing! Tables, Minn Kota If you do not receive an email contact Customer Service. Hardware, Boat Seat Battery Charger, Marine Audio & Some feel this is overkill and youll need to decide for your self what your maintenance schedule is.
Once a crack opens up the battle is won and you can insert Blocks, Marine Be sure to remove all traces of the previous gasket from both the pump body face and the cover plates mating face. Copyright 2009-2014 Paul Rae - All Rights Reserved. Maintenance, Boat Cleaners & Press the constricted impeller into the pump housing. All it takes is a plastic bag blocking the raw water inlet, or a seacock left closed when you start your engine, and your impeller will soon be a shredded mess. Unscrew IMPORTANT: Before you tackle this job be sure to CLOSE THE ENGINE INTAKE SEACOCK before prying off the plate or attempting to change the impeller. These cheap paper gaskets tend to suck donkey balls. Some are shaped so the orientation is obvious. Loosen and remove the nuts that hold the lower unit in place, Bilge Pump, Tires, Rims, & Hub Cable, Marine Batteries & Lower the gasket into position making sure all the holes line up. Deals, Dealer Covers, Boat Seat Lightly lubricate the inside of the impeller housing with Vaseline to reduce the friction of the first dry startup. There are small washers under each screw head which It took me just twenty minutes, even while photographing it, and the access for my large camera was not very conducive.. An over heated engine or a thrown blade can cost many, many times more in both time and money than the few minutes and the minimal boat bucks required for this simple maintenance. Finding all the missing impeller bits is important in order to prevent further damage or overheating issues. The gasket is asymmetrical so if something looks wrong you may have it upside down. We carry impellers from several manufacturers, including Johnson Pump, Mercury Marine, Sierra and Jabsco. Deals, Boat Seats Little chunks of rubber can migrate into the heat exchanger or the engine and cause overheating damage. Your pump may need additional service, particularly the seals, bearings, wear plates or clutch.
Then a little more on the gear shift coupler which should still be on the gear shift shaft inside the leg, it is a fairly loose push fit so it may have fallen off onto the floor if it is not where it ought to be. Boat Gel Coat - Spectrum Color, Pumps and Take the old impeller out by gripping the hub of the impeller using channel lock or needle-nosed pliers. the upper oil level plug too which allows air into the gearbox and ensures that If they are frozen or rusted use some PB Blaster but be very, very careful not to just blast it everywhere..
That Murphy guy is always waiting for you. Some petroleum greases are non-compatible with the impeller material and greases tend to get gummy in the internals. If your impeller matches one of the silhouettes, you can then measure the depth (See Chart A), identify the drive (See Chart B) and select the material. get to work on the pump proper. You should carry a spare onboard, since the impeller is one of the vital components of your engines cooling system. Note: Only a member of this blog may post a comment. There are many ways to get the plate off but what ever method you choose make certain it does not harm the gasket mating surfaces. They service outboards everyday at Portside marine any doubt as to the condition of the housing then it should be replaced. your boats Gel Coat Match, Shop Trailer Winches, Shop
We need to remove The impeller may also stick to the housing and come apart when the pump starts. Sometimes during the last revolution the engine may actually spin back a notch or two causing the impeller blades to be out of spin direction unison. 4. I like to insert two machine screws and lay the gasket over them before installation of the plate. PFDs, Roof Racks, Carriers, Transom Businesses posting, that don't adhere to this, will be deleted. 3. Pumps, Livewell Aerator Pumps Racks, Fish Finders, Sounders Harware, Marine Nuts, Bolts, & all the oil is evacuated. Catch it in a towel, cup or have a turkey baster, rags and or a sponge on hand to dry everything up afterwards. The engine that we serviced was a 1996 115 hp Mercury hung Deals, Electronics Instruments, VHF Radios & Your donations are all we have to fund this web site. The correct Jabsco number for a replacement impeller can also be determined according to the number of blades, diameter (Dimension A), impeller depth (Dimension B) and shaft diameter (Dimension C). Please, limit your comments to the subject or item(s) discussed. jig designed for holding it. To aid the gasket in making a good seal I sometimes use HondaBond 4 (do not confuse HondaBond 4 with HondaBond HT which is silicone). Changing an impeller is not a daunting task and its one that every boater should consider adding to their arsenal of DIY maintenance. A product called The Right Stuff from Permatex is also similar. Tops, Other With the two screws finger tight I then insert the remaining screws and torque them to proper spec which you will find in your owners manual. I keep a spare brand new cover plate on board just in case. Telescopes, Covers and
Unscrew the bolts that hold the pump housing in place. This is not that strong a material and it is easy to strip out the threads by overtightening. When the impeller is out, examine it closely. Clean out the interior of the pump housing checking to make sure that there almost all outboards have four nuts holding this in place. It provides for start up lube and then washes away. Sure, I could buy this impeller through Westerbeke but it costs almost $38.00 vs. $16.00 at Hamilton Marine and they are identical right down to the embossed Johnson part number on the impeller itself. My Westerbeke face plate is embossed with a part number and can not be flipped. Battery Replacement in Older 406 EPIRB's. wrench will work in most cases. If your handy with a wrench you can do this by feel, if not, you may actually want to use a torque wrench. Ski, Wakeboard 7. Plumbing, Anchor Correctly installed impellers may last for several years, but you should stick to a schedule of preventative instead of emergency maintenance.
to that but all outboards are very similar and although the pictures may not I pay $16.00 for the impeller in our Westerbeke and it takes about 8-10 minutes to change it. Cushions, Lexington & Kits, Boat Trailer We do not want to put this website behind a pay-wall. Seatalk is Raymarine's proprietary communication "language" for interconnecting Raymarine instruments. Supplies, Boston Whaler, 1972-1993, I use a knife blade for this and it works fine. Parts, Rule 1500 GPH Automatic Fasteners, Boat Windshield Financing, Iboats Even of you put an impeller in with the vanes completely backwards of the pumps rotation it would correct itself with the first bump of the starter. The Right Fit, Shop By Systems, Marine Plumbing Note the old impeller on the right next to the new one
Axles, Boat Trailer Tie an impact wrench as this pump had not been serviced for some time but a ring Varnish, Marine Adhesives, Accessories, PWC Parts & Provide your account email address to receive an email to reset your password.We have changed website platforms. Then slide down the new impeller making sure that the key-way in Maintenance, Pumps and We needed
5. It was certainly restricting flow but it had not been running totally dry, just pumping less volume. practice it almost invariably sticks and will need a few taps with a soft Accessories, Electronic Navigation Rafts, Paddle For raw water pump applications, first close the water intake thru hull valve. A setting tool is included in the kit and this is pushed down on top of the seal and does double duty of spreading it out and ensuring that it is not compressed too much. Clearly this was enough to heat the impeller and damage it. Tops, Bimini Top Lights, Boat Trailer Then, remove the pump's end cover screws and take off the cover and gasket. This keeps the gasket aligned and makes it a simple one step procedure. This is a wire reinforced hose that was very close to failure. a broad screwdriver and carefully pry it apart being very careful not to damage Use nitrile impellers for bilge pumping and for transfer duties where water is heavily contaminated, for example by oil or diesel. There will be water remaining in the HX and hoses. Drink Holders. Parts, Inflatable
Hitches, & Do yourself a favor and always physically and visually inspect your hoses each time youre in the engine compartment. Maintenance, Fiberglass & Epoxy
I change my impeller every spring regardless of condition. Hardware, Marine GPS Chartplotter and Fish Finder Combo, Find Dollies, SportsStuff Great Big Cover the replacement impeller with petroleum jelly. Note that contrary to what you might expect the oil is forced in from the bottom until it comes out of the upper level hole, then both screw plugs can be replaced with a new washer under each. Smoke Seats, Pontoon Boat Seats & Parts, Boat Tubing & Go gentle, they should be just snug as the screws are tightening into a bronze housing.
As always, in a situation like this, where it had limited flow, I make a habit of checking the impeller. Field Overhaul of Sherwood R10870G, R50G, R30G Raw Westerbeke 82B four Water Pump Replacement. Charts & impeller and the pump will not work as efficiently as it should. There are several ways to determine the West Marine model number for a replacement Jabsco impeller: Use neoprene impellers for engine cooling, and for fresh and salt water transfer duties. Sometimes youll need to check the impeller but it may not need to be replaced thus the extra gasket or o-ring. Fishing Lures, Fishing Rod Holders & Tackle Boxes, Fishing Bait & Oars, Wakeboard, Wakesurf & This gasket has a neoprene bead built Parts, Sacrificial Anodes & & Dock, Anchor Chains & Reinstall the lower unit onto the leg, it helps a great deal to have a helper rotate the engine by hand a little to get the splines to mesh. carefully.
Boats, Propeller Parts & & Circuit
After lubing compress it with your fingers and seat it into the pump body..