| Rexroth A10VSO hydraulic pump |
| 1. What are the possible causes and solutions for insufficient or
no oil output from the hydraulic pump? |
| • Reason: |
| Excessive resistance in the oil suction pipeline (such as clogged
oil filter, low oil tank level, or air leakage in the inlet pipe). |
| Internal leakage of the pump (scratches on the oil distribution
plate, poor sealing, sand holes, etc.). |
| The inclination angle of the inclined plate is too small and the
displacement is insufficient. |
| Motor reversal (requires adjustment of phase sequence). |
| • Solution: |
| Clean the oil filter, add oil to the normal liquid level, and check
the sealing of the pipeline. |
| Replace worn parts (such as plungers, oil distribution plates) or
grind mating surfaces. |
| Adjust the variable piston to increase the inclination angle of the
inclined plate. |
| 2. How to adjust if there is still traffic output at the median
level? |
| Reason: Deviation, looseness, or wear of the control mechanism
(such as wear of the inclined plate ear shaft). |
| Solution: Reset the controller, tighten or replace damaged parts,
and check the angle holding force. |
| How to troubleshoot the high vibration and noise during pump
operation? |
| • Mechanical reasons: |
| The pump and motor shaft are not concentric, the coupling is
damaged, or the bolts are loose. |
| Wear of bearings or variable head bearings (dry friction or
impurities in the oil during start-up). |
| • Hydraulic reasons: |
| The oil inlet pipe is too thin, the oil filter is clogged, or the
oil viscosity is too high. |
| • Solution: |
| Reinstall and replace worn parts. |
| Select appropriate oil to ensure smooth fuel tank design and
piping. |
| What are the causes and solutions for overheating of the pump body? |
| • Reason: |
| Mechanical friction (such as improper clearance between moving
parts) or liquid friction (high-pressure oil leakage converted into
thermal energy). |
| Filter blockage leads to excessive back pressure in the return oil. |
| • Solution: |
| Adjust the gap and increase the capacity of the cooler or fuel
tank. |
| Clean or replace the filter. |
| How to solve the problem of oil leakage? |
| • Common oil leakage points: |
| Damaged spindle oil seal, internal leakage (high oil seal
pressure), loose external pipeline or aging sealing gasket. |
