What To Do If Your Pressure Washer Pump Oil Is Milky
Is Your Pressure Washer Pump Oil Milky?
- Excess Humidity: Excess humidity in the air results in condensation of water in the oil casing, which ultimately seeps into the oil gasket. The possibility increases in high humid areas and when a pressure washer lies idle for an extended period. Alternatively, as the pump cools down, it draws in humid air, which condenses into water. Continued exposure builds up the percentage of water, which eventually turns the pump oil milky.
- Damaged Oil Seals: The role of the seal is to prevent liquids, dust, and unwanted elements into the oil compartment. When the seal or washer is damaged, water seeps in with ease. Seals become damaged due to poor pressure washer maintenance, thereby exposing the oil to water. If the pressure washer has damaged oil seals, exposure to rain leads to leaking. Water applied during the washing process can also leak, leading to milky oil.
- Damaged Water Heat Exchanger: Several pressure washers use water as a coolant medium. As the equipment ages, the internal tubes degrade, making it possible for water and oil to mix.
- Crack in Plungers: A plunger functions like pistons found in vehicle engines; the only difference is they are protected and move in a closed cylinder. Cracks in plungers expose oil to humidity and water used in the cooling process. When the crack is not detected or repaired on time, you'll have a constant problem with your pump oil.
How to Fix Milky Pump Oil
- Take off the Casing: Use a wrench to unscrew every bolt in the exterior casing. Carefully remove the bolts and place them safely in a bowl. The unbolting process will make it easy to remove the case.
- Remove the Allen Socket: After removing the casing, the interior parts of the pressure washer will be visible. Use a wrench to remove the Allen socket and get a clear picture inside the pump case.
- Remove the Valve: After successfully locating the pump case, you'll find a valve inside the casing. Use a pair of forceps to remove it — take caution to avoid damaging this crucial element.
- Open the Casing: Strike the casing with a hammer carefully, to open the case into two. The process will enable you to see the oil rings.
- Repair the Oil Ring: After opening the casing, you'll notice the packing, leaking oil, and water. You can either apply re-seal to restore permeability or change the entire packing.
- Re-attach the Pressure Washer and Add Oil: Once you've repaired the damaged components, you'll need to re-assemble the pressure washer. The final process requires you to add fresh oil with the pump in an upward position.
- Purchase the Right Packings Kit: Refer to the pressure washer user manual to get details of recommended packings model and size. Look keenly at the dimensions to ensure they're a perfect match.
- Replacement Process: Use an Allen wrench to remove bolts at the back of the pump, followed by brass rings above the packings. Examine each packing to identify the damaged ones.
- Replace the damaged packings with new but perfectly fitting sets. It's crucial to handle brass rings carefully, as they can easily damage.
Valuable Tips for Repairing or Maintaining a Pressure Washer With Milky Oil in the Pump
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