Heavy Equipment Mechanic how-to
How to Troubleshoot a Slow Hydraulic Function
Slow movement can come from the pump, valves, cylinders or fluid.
Quick answer
Slow movement can come from the pump, valves, cylinders or fluid. In short: talk; check; inspect, then complete the remaining steps below.
Step by step
Talk to the operator about when the problem occurs.
Check fluid level, condition and filters.
Inspect hoses and fittings for leaks or damage.
Connect pressure gauges at test ports and compare with specs.
Test pilot pressure and relief valve settings.
Isolate the faulty component and repair or replace it.
Safety reminders for heavy equipment mechanics
- Relieve hydraulic pressure before opening lines
- Block raised equipment and never work under unsupported loads
- Follow lockout/tagout procedures
- Wear PPE and stay clear of pinch points
Key terms
Hydraulic system · Hydraulic pump · Cylinder · Relief valve · Undercarriage · Final drive: see the full heavy equipment mechanic glossary.