Most power washers are equipped with a thermal release valve at the bottom of the pump system, which is designed to expel water from the pump system when it becomes too hot. If you placed an order on ApplianceHelp.com the order is still valid and you can check on its status and make changes here on PartSelect.com. The frozen water expands and causes damage to the pump, compromising its seal and ability to pressurize the water. Not fixing them results in loss of pressure in the system, additional costs for water and water runoff where it may be unwanted on the job. Over time, this coupling (and the seal inside of it) can wear or break. If the thermal release valves’ seal is compromised, it may continuously leak water and cause the washer to lose pressure. The pump has pistons inside of it that create pressure to pull the water from the intake and force it out of the nozzle.

This seal and coupling should be fairly easy to remove and replace.
If the outlet seal is broken, you will likely notice water leaking directly from its connection to the hose.

Installing a new o-ring is a very simple and cheap repair.The thermal release valve keeps the water in the pump within a safe temperature range to prevent overheating, which can be caused by the recirculating water within the pump system. We can offer you custom troubleshooting help if you search with your model number. If your power washer leaks water from the connection between the hose and inlet, the seal and possibly the coupling on the inlet are likely broken … A few specific areas on a power washer unit are more prone to water leaks. Still not sure which part is broken? Power washer leaks are common. The inlet seals function is to seal the water intake inlet. When the washer is not spraying water, it is recirculated within the pump system to keep it under pressure, which also causes the water to heat up. The pump on a power washer can crack open if water is left inside of it and freezes. $price$ If your power washer is leaking water directly from the pump, and there is no noticeable damage (such as a crack) on the pump, it is likely that the internal piston seals are worn or broken. It is important to fix power washer leaks, too. The thermal release valve is a fairly cheap component, and can be easily replaced by unscrewing the old valve, and screwing in a new one. The inlet seals function is to seal the water intake inlet. The seal on the thermal release valve, like most seals on the pump, will wear with regular use.
If the coupling is in tact, replacing the o-ring inside of it should fix the problem. When a hose is attached, it is screwed into the inlet coupling which holds the hose firmly and seals the connection so water does not leak out. If the water inside of the pump is allowed to become too hot, it can compromise the seals inside of the pump and cause serious damage. If the outlet coupling is cracked or broken, replace the entire coupling. If this is the case, remove the pump from its housing and open it to inspect the pistons and o-rings that seal the pistons inside. Over time, this coupling (and the seal inside of it) can wear or break. A leaking pump suggests that one or more of the seals on each piston has broken or worn and is letting water escape. If your power washer leaks water from the connection between the hose and inlet, the seal and possibly the coupling on the inlet are likely broken and will need to be replaced. $inventory$ These pistons must remain sealed in order for the pump to properly pressurize the water. A cracked pump should be replaced rather than repaired.The outlet seal seals the connection from the pump to the high-pressure hose, which sends water to the trigger wand. If any o-rings are broken, worn, or out of place, they should be replaced with new ones or fit back into place if they are in good condition. When a hose is attached, it is screwed into the inlet coupling which holds the hose firmly and seals the connection so water does not leak out. If the pump on your washer is noticeably cracked, it will need to be replaced.


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