PRESSURE WASHER TROUBLE SHOOTER
       Tech Tips and Troubleshooting
 

       Listed below is the problem you selected with causes, solutions and discussion

BROKEN OR SCORED PLUNGERS

Check and replace if needed

Broken or worn plungers, also known as pistons, will cause pressure drop.  If it's a worn plunger, pressure drop will occur over a period of time.  If it's a sudden loss of pressure then one or more of the pistons could be cracked.  

I say "could" because the pressure loss could be caused by worn seals, or both pistons and seals.  Refer to water leakage in the index.

Generally speaking, if you have a broken or cracked plunger you will also have damaged seals.  To inspect seals you will be exposing the pistons.  

ALWAYS check piston condition VERY closely.  Minor cracks may not be visible but will still allow water to pass when under pressure.  Best way is to inspect is under a magnifying glass.  Also,  run your finger nail or a sharp edge, such as a razor blade, across the plunger to feel for a minor crack.

To see a range of replacement plungers click here.  

To prevent plunger damage make sure you have a clean water supply and do not let your pump overheat.  The cold incoming water cools the pump as it goes through the system.  If this flow is restricted the pump will cavitate and overheat.  Most plungers are made from ceramic material, which is very hard wearing, but brittle.  When over-heated this ceramic material will crack.   

For a discussion on pumps click here.  

Tell-tale signs of worn or broken pistons is water in your crankcase oil.  Check the oil for a  milky color.  See the index for additional discussion points

To see a range of replacement pumps click here.

 SOME OF THESE OPERATIONS CAN BE EXTREMELY DANGEROUS.  IF YOU DO NOT HAVE SUFFICIENT TRAINING IN THESE PROCEDURES, WE RECOMMEND YOU SEEK ASSISTANCE FROM A 
QUALIFIED TECHNICIAN



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