Signs Your Hydraulic System Needs Attention

Hydraulic systems are the lifeblood of most modern plant machinery — powering everything from excavator arms to telehandler booms. But like any system under pressure, things can go wrong. Recognising early signs of hydraulic trouble can prevent costly breakdowns, reduce downtime, and keep your machines running at peak efficiency.

At Hamstead Plant, we’ve seen first hand how small issues can snowball if left unchecked. Here are some of the most common signs your hydraulic system needs attention:

1. Unusual Noises

If your machine starts making whining, banging, or grinding sounds, it could indicate aeration or cavitation in the hydraulic fluid — usually caused by air or vapour entering the system. Left unchecked, these issues can cause serious internal damage.

2. Sluggish Performance

Slow or unresponsive movements are a red flag. Whether it's a bucket taking longer to lift or an arm hesitating mid-operation, this could be due to low hydraulic pressure, fluid contamination, or worn components.

3. Hydraulic Fluid Leaks

Puddles or drips around the machine are never a good sign. Leaks not only reduce system efficiency but can also be a major safety hazard. Common culprits include damaged hoses, loose fittings, or cracked seals.

4. Overheating

Excessive heat can lead to fluid breakdown, component wear, and eventual system failure. If your machine is running hotter than usual, it may be due to restricted flow, dirty filters, or improper fluid levels.

5. Erratic Operation

Inconsistent or jerky movements often point to air trapped in the system or fluid contamination. If your machine suddenly behaves unpredictably, don’t ignore it — it’s likely warning you of an underlying issue.

6. Unusual Smells or Discolouration

Burnt smells or dark, milky hydraulic fluid often signal fluid degradation or contamination. Healthy hydraulic oil should be clean and consistent in appearance. If it’s not, it’s time to flush the system and replace the fluid.

Don’t Wait Until It’s Too Late

Ignoring these warning signs can lead to serious breakdowns and unexpected repair costs. Regular servicing and preventative maintenance are the best ways to extend the life of your machinery.

At Hamstead Plant, our expert team offers full hydraulic inspections and servicing — helping you catch issues before they become expensive problems.

Need your hydraulics checked?

Call us on 01384 270888 or email info@hamsteadplant.com to book a service.