Raw water pump impeller replacement how to guide

Open the catalog to page 11. Just re use your back plate.

Once removed loosen the hose clamps and rotate the pump so you can access the pump cover.

Raw water pump impeller replacement how to guide. Run your finger around the inside to feel for groves or rough spots and give it a good visual inspection. Once you have done this apply some impeller lube AKA glycerin to your finger and lube up the inside surfaces of the pump body including the back wall as it too is part of the impellers sealing surface. Replace impeller raw water pump - YouTube.

Use Nitrile Impellers for bilge pumping and for transfer duties where the water is heavily contaminated for example by oil or diesel. For diesel transfer duties go to pages 45-46 and select a Jabsco Sliding Vane pump. Impeller Replacement Replace all impellers at least once every year or sooner depending on the engine duty.

Lifting the impeller out of the housing or until loose. Twist and pull the impeller out of the pump. Installation Apply a non-petroleum based lubricant to impeller ie.

Silicone or soapy water. Install the impeller with a twisting motion onto the shaft. Use puller tool to push impeller into pump by loosening and lowering nut.

Changing Raw Water Pump Impellers This is a tough job on twins and its even tougher if you put the pump housing in backwards. Ah-hem The impeller has to screw into the housing in one direction as well. The below photo and diagram show how the parts go but a smart mechanic marks the parts before taking them apart.

Twist and pull the impeller out of the pump. Apply a non-petroleum based lubricant to impeller ie. Silicone or soapy water.

Install the impeller with a twisting motion onto the shaft. Use puller tool to push impeller into pump by loosening and lowering nut until tightens against impeller. Open the catalog to page 11.

Mercruiser water pump impeller diagrams impeller water pump replacement parts and repair manuals. Step by step instructions to follow when replacing a mercruiser sea water pump impeller. Just re use your back plate.

Mercruiser v8 fresh water cooled raw water through manifolds water flow diagram. The Bravo does not have a water pump in the drive. The Bravos water pump is mounted on the engine.

It is usually down low in the bilge on the front lower starboard side of the engine. The Raw Water pump should be rebuilt every season. The Bravo Water Pump is belt driven.

It has two hoses attached to the rear housing. Threaded Impellers Twist and pull the impeller out of the pump. Installation Apply a non-petroleum based lubricant to impeller ie.

Silicone or soapy water. Install the impeller with a twisting motion onto the shaft. Use puller tool to push impeller into pump by loosening and.

Open the catalog to page 11. Lifting the impeller out of the housing or until loose. Twist and pull the impeller out of the pump.

Installation Apply a non-petroleum based lubricant to impeller ie. Silicone or soapy water. Install the impeller with a twisting motion onto the shaft.

Use puller tool to push impeller into pump by loosening and lowering nut. This guide focuses on how to replace a D5 Pump Impeller in your aquarium with a few additional tools. The impeller is the part of the pump that is spun to move water.

Over time the pump impellers contact point can wear down and the impeller can get stuck. This is usually characterized by a screeching or grinding noise and no water flow. This raw water pump is made by Johnson Pump as a specific OEM unit for Westerbeke.

Unfortunately Johnson Pump will not sell you parts other than an impeller due to OEM agreements with Westerbeke. A new Westerbeke pump is 48000 and the rebuild kit is 13000. This kit includes literally everything but the pump body.

Remove the three bolts 1 and lock washers 2 from the pump cover 3The cover and o-ring 4 are now freeThe impeller end cap 5 can be pried off with a screwdriver. Normally impellers 7 can be removed using two pair of pliers to grip two of the impellers vanes on opposite sides of the impeller. Impeller removal tool if available.

New impeller and gasket. 1IMPORTANT TURN off the engine freshwater thru-hull. Locate pump on starboard front of engine and remove the 2 mounting bolts.

Slip belt off pump. Once removed loosen the hose clamps and rotate the pump so you can access the pump cover. Install the new impeller again paying close attention to the direction of the flanges.

I find it easier if I put a zip-tie around the impeller tight enough to get the flanges to lay over in the correct direction. The zip-tie will slip off as I push the impeller into the pump. Using a new gasket replace the cover and tighten the six small bolts.

Spin the pump back around and slide the belt. The prudent vessel operator will however replace his or her raw water pump impeller seasonally or approximately every 250 hours whichever comes first. In my experience barring catastrophic events such as severe intake clogs impellers that are replaced at this interval almost never suffer failures.

When should I replace my raw water impeller. Considering the importance of the impeller and how little it costs I never go past a year or 200 hours before impeller change but check your manufactures recommendations in the service manual. If youre trying to delay for another year saving the cost of a small lunch estimate the costs of trying to find an impeller.

JABSCO flexible impellers are available in the following materials. NEOPRENE is the standard impeller material used in most flexible impeller pumps. It offers a wide range of chemical resistant properties.

NITRILE impellers offer compatibility with oil products. It handles a wide range of oils oil and. Close your raw water seacock then undo the faceplate screws taking care not to lose them in the bilge.

Put a tray or tea towel down before you start and ensure you use the right tool so you dont damage them. As the faceplate comes off a small amount of water will drain out have a sponge ready. To take the impeller out best practice is to use an impeller puller which lifts the impeller.

If you are replacing the impeller due to overheat issues versus routine maintenance go ahead and replace the pump body as well. Verify there are no restrictions to the water flow going to the engine. Common causes of restriction are grass weeds and the remains from previous water pump impellers that come apart resulting from overheating.