How To Rebuild A Pressure Washer Pump? 9 Easy Steps!

How to rebuild a pressure washer pump? It includes steps as to troubleshoot the pressure washer first before you begin, siphon the oil as you remove it, replace a new oil, prime the side of the pressure washer, next is to clean the chemical strainer, choose for a replacement pump, get the old kind of pump disconnected, un-install the pump, get the new pump mounted, and test the pressure washer if it’s working.

Indeed, the pump in a pressure washer regulates the flow of water and enables the unit to function as it must. Unfortunately, the junk piece will have to sit in the garage. with no pump. It is a common issue among homeowners. The thing is that you can still rebuild the pressure washer pump. Only that, you must provide for the best oil.

how to rebuild a pressure washer pump


Steps To Rebuild A Pressure Washer Pump

Below are the steps to consider how to rebuild a pressure washer pump.


Step #1. Troubleshooting the problem

It’s first essential trying to figure out the problem. It helps you figure out the part in the pump that must fix. Next, pay attention to things like a warranty or a water flow level. Finally, consider thinking if the gas pressure washer goes under warranty. It will indeed save you effort and time. So far, many pressure washers fall under a 1 to 2-year warranty. This means to say you can send a unit to a replacement or repair manufacturer.

Better yet, call the customer service of a manufacturer. Give them a model number that will let you know if it’s free repair.

The low flow of water may be the result of clogging in the pipes. Or, it could be due to a faulty connection in the water source. Inspect the filter screens and intake valve for things to remain clear and clean. Also, look at those O-rings and valves to avoid leakage. The zero flow of water is also one sign of a pump that works poorly. If it doesn’t have water flow, shut the device off and begin the repair procedure. You may also be interested to read how to reset the Kenmore washer.


Step #2. Siphoning the pressure washer’s oil

The siphon helps remove the oil inside a pressure washer. While you remove it, look closely at the quality of the oil. For example, cloudy oil would mean more water is there. After you remove the oil, grab a new oil to replace it. Pressure washers would often make use of exceptional oil.


Step #3. Priming a pressure washer

Prime the side and the pump of a pressure washer with a primer. If there is no substantial flow upon the start of the washer, get a discharge hose disconnected then. Next, release the air from a pump and get the discharge hose reconnected. Then, get the pressure washer started again.


Step #4. Cleaning its chemical strainer

If there is a clog in the chemical filter, it could cause the device to work poorly. It might even bring out clattering noise as if it’s a broken pump. Clean it by unscrewing it from a hose. Run water by using a filter. Make use of a small brush that removes debris. Install it again to a hose but if the pressure washer doesn’t perform well, replace its pump then. It may also be good to know how to clean mold from the front load washer gasket.


Step #5. Selecting its replacement pump

Get a new pressure washer pump installed as it’s easier when done. It is better than rebuilding the pump of a pressure washer. But, do the latter if you’re experienced in working and engineering using delicate components. Figure out the washer as it uses an axial pump or triplex. If a pressure washer is less costly, it may have an axial camp type of pump; if you have a costly grade-one, better to use a triplex type of pump.


Step #6. Getting an old pump disconnected

Get the wire disconnected as it’s connected with a spark plug and to a machine. Next, pull it out and get hoses disconnected, often connected to a pump like a spray nozzle, inlet hose, chemical injection tube, & outlet hose. In this process, clamp the chemical injection type of tube and its end. You won’t surely spill chemicals toward yourself and to internal components, too as you remove the tube.


Step #7. Getting the pump uninstalled

When you get the pump components disconnected, it’s high time to get the old pump uninstalled. Loosen any bolts or screws and work on the pressure washer as you pump it out. You now need to get the thermal relief type of valve inspected when you remove it. It will push out hot water if internal water becomes hotter. A broken component requires installing a new one on a new pump. If there’s no thermal relief valve type while the old one is functional, you could still transfer them. 


Step #8. Mounting on a new pump

Get a new pump installed into an existing pressure washer with similar screws and bolts removed from an older form of pressure washer. If dirt builds up in an old pump, it’s good to use rubbing alcohol and a soft rug that cleans up these components. It is before you engage in a new installation. It may be helpful to know how to replace a tub bearing on a Maytag washer.


Step #9. Getting the pressure washer tested

Turn the pressure washer on and notice if a new pump works correctly. Follow the steps mentioned so that you won’t have issues with this last step. But if things don’t work out well, carry it to the professional for proper repair and diagnosis.


It’s A Wrap!

Now you learn how to rebuild a pressure washer pump safer and more accessible than repairing some of the housing’s delicate components. If you are unsure of your replacement or repair skills, carry your tools before an engineer or mechanic for further assistance. 

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