Help with Reed Pump.
HCB concrete 05-20-2024
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Water pressure is available because the water pump turns and throws water at the outlet. It's not like a hydraulic pump in that it can run against a closed hose nozzle (for example) without over-pressurizing and causing a blowout. It has a pressure relief valve, which is what sets the water pressure maximum.

Slow or internally-bleeding hydraulic motor or circuit will cause your symptoms; so will a pressure relief valve on the water side malfunctioning or sticking open.

Start with the cheap and easy:

• I don't have the schematic, but if there are any other devices on the same oil circuit, see if they're running at the correct speed. (Could be the agitator is on the same circuit.) If any other circuit components work as expected, you can eliminate the hydraulic pump and controls from the cause. If they don't, then the pump and hydraulic system become the prime suspect. If the hydraulics work as expected, then go to the next step.

• Try raising the pressure of the water relief valve (typically a brass colored device near the water pump with a T handle and a set screw on the shaft.) If it doesn't help, turn it back down to where it was.

• Make sure no valve is half-engaged (which would also cause heat).

If all that seems good, then your water pump could be worn out. Only replacing it would say for sure. I hope this helps. Mechanics; if I forgot something, bring it up. I may have advanced CRAFT disease. (Can't Remember A F'ing Thing.)




Todd 04-04-2025
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Reed Pump Water System Troubleshooting

You're right about how the water pump system works on Reed pumps. Let me help you troubleshoot your water pressure issues with some specific steps:

Start with these cheap and easy checks:

  1. Check the water inlet filter/strainer

    • Remove and clean any debris that might be restricting water flow
  2. Examine the pressure relief valve

    • Look for proper operation - it may be sticking open
    • Clean and inspect for damage
  3. Inspect the hydraulic motor driving the water pump

    • Check for slow operation
    • Look for signs of internal bleeding (hydraulic fluid where it shouldn't be)
  4. Test the water pump itself

    • Listen for unusual noises during operation
    • Check for water leaking from seals

Advanced Troubleshooting:

If basic checks don't resolve the issue:

  • Test hydraulic pressure to the water pump motor
  • Inspect water pump impeller for damage or wear
  • Check all seals and gaskets in the water system

If all these checks look good, your water pump may be worn out, and replacement might be the only definitive solution.

Is there any specific symptom your Reed pump is showing that I can help address more precisely?