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Hydraulic Pump Losing Pressure During Operation? Check These 5 Critical A8VO160 Components!

2023-04-15

Latest company news about Hydraulic Pump Losing Pressure During Operation? Check These 5 Critical A8VO160 Components!

Background:

On construction sites using concrete pump trucks, excavators, or rotary drilling rigs, a sudden drop in hydraulic pressure can paralyze operations. The Rexroth A8VO160 hydraulic pump, widely used in CAT Diesel 330/345 series, Daewoo DH370, and SANY rotary drills, plays a central role. Failures in its core components can lead directly to pressure instability.

5 Key Components to Inspect During a Pressure Drop:

  1. Piston Wear or Breakage
    Worn or broken pistons cause internal leakage and disrupt pressure output.

  2. Valve Plate Damage or Warping
    A damaged valve plate compromises oil distribution, leading to unstable pump performance.

  3. Cylinder Block Surface Wear
    A worn cylinder block results in poor piston sealing, increasing internal leakage.

  4. Drive Shaft Deformation or Wear
    Overload conditions can cause shaft misalignment or bending, reducing transmission efficiency.

  5. Control Piston or Center Pin Sticking or Aged
    Faulty control pistons cause delayed response to load changes, triggering momentary pressure drops.

Recommendation:

If you notice any abnormal pressure during operation, stop the equipment immediately and inspect the components listed above. Replace with genuine or high-precision aftermarket parts to restore full functionality.

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