How often should you change the impeller on a Mercury outboard motor?
TomP. Mercury recommends changing the impeller every 300 hours…its in the owners manual. It’s an easy enough job to do yourself if you have some mechanical skills.
How to replace a water pump on a Mercedes 190E?
If you do break it you can replace it, but sometimes it is easier just to undo the lower radiator hose. Begin by removing the two rubber hoses on the drivers’ side of the car that go from the water pump to the radiator. Next remove the overflow hose from the top of the thermostat housing.
How do you replace a water pump in a car?
Inspect the water pump for leaks. Remove the pressure tester. Place a drain pan under the radiator. Open the drain valve or remove the lower radiator hose to drain the cooling system. Remove the drive belts or serpentine belt. Remove any hoses connected to the water pump. Unbolt the water pump from the engine. Remove the water pump.
How do you remove a water pump from a radiator?
Place a drain pan under the radiator. Open the drain valve or remove the lower radiator hose to drain the cooling system. Remove the drive belts or serpentine belt. Remove any hoses connected to the water pump.
Where is the drain plug on a Mercedes 190E?
There is an access panel on the lower passenger side of the front bumper. This will allow you to get to the radiator drain plug. Remove the panel by pulling straight out on it. This will give you access to the drain plug. Turn it clockwise to drain the system. This plug can sometimes get corroded and break when turning.
When to replace the impeller on a Mercury outboard?
Whenever you have to remove the lower unit from your outboard, it’s worth replacing the impeller, driveshaft and shift shaft oil seals in one go. Follow the steps below and watch the video above to learn how to replace the impeller and repair the water pump on a Mercury 200HP outboard.
How do you replace a water pump on a boat?
Step 1. Remove the four 10mm bolts securing the water pump housing, then remove the housing by sliding it up and off the driveshaft. Step 2. Remove the impeller and the woodruff key securing it against the driveshaft. NOTE: The impeller may come off with the water pump housing or may remain on the driveshaft.
When to replace water pump housing and impeller?
NOTE: The housing has a longer lifespan than the impeller, so it’s more likely that the impeller will need replacing but the housing won’t. However, any mechanical part will eventually become worn, so if you see any wear inside the housing, it’s time to replace it.
When to replace the oil seal on a water pump?
Usually the impeller is the culprit, but you won’t know until you remove the lower unit and take a look. Whenever you have to remove the lower unit from your outboard, it’s worth replacing the impeller, driveshaft and shift shaft oil seals in one go.