1. Hydraulic Leaks
Leaks are one of the most frequent hydraulic issues and can lead to reduced efficiency, system contamination, and eventual equipment failure.
How to Diagnose:
– Look for visible fluid pooling around hoses, fittings, or cylinders.
– Check for wet spots or drips under your machine after it’s been parked.
– Monitor fluid levels — a sudden drop indicates a possible leak.
How to Fix:
– Tighten loose fittings carefully (but avoid over-tightening, which can damage threads).
– Replace worn or damaged hoses and fittings.
– Wipe down leaks to pinpoint the source and ensure it’s not coming from a secondary component.
When to Call a Pro:
If leaks persist after tightening or if you spot cracks in cylinders or fittings, it’s time for professional hydraulic repair. Persistent leaks may point to deeper issues within pumps or seals.
2. Pressure Loss
Pressure loss reduces equipment performance, making it sluggish or unable to lift or move loads effectively.
How to Diagnose:
– Use a pressure gauge to check system pressure against manufacturer specs.
– Listen for unusual whining or cavitation noises from pumps.
– Inspect for leaks, loose connections, or collapsed hoses.
How to Fix:
– Top off hydraulic fluid to the proper level.
– Replace clogged filters that may be restricting flow.
– Inspect hoses for kinks or internal collapse and replace if necessary.
When to Call a Pro:
If pressure remains low after these steps, it may indicate pump wear or valve malfunctions that require specialized diagnostics.
3. Overheating
Overheated hydraulic systems can cause fluid breakdown, reduced performance, and serious component damage.
How to Diagnose:
– Check fluid temperature (most systems shouldn’t exceed 180°F–200°F).
– Inspect cooling components like heat exchangers or fans for blockages.
– Look for signs of fluid discoloration or burnt smell, indicating heat damage.
How to Fix:
– Clean or replace clogged cooling fins or fans.
– Use the correct grade of hydraulic fluid for your machine.
– Reduce system load if you’re working beyond equipment capacity.
When to Call a Pro:
Persistent overheating may be caused by internal pump inefficiencies, blocked flow paths, or failing cooling systems that need expert repair.
4. Hose Wear and Damage
Hydraulic hoses endure constant pressure and environmental exposure, leading to wear over time.
How to Diagnose:
– Inspect for cracks, bulges, or exposed reinforcement wires.
– Look for rubbing or abrasion points along the hose route.
– Check for kinks or flattened areas that restrict flow.
How to Fix:
– Replace damaged hoses immediately — temporary patching isn’t recommended.
– Add protective sleeves or reroute hoses to avoid abrasion.
– Secure loose hoses with proper clamps to reduce vibration damage.
When to Call a Pro:
If multiple hoses show wear or if damage keeps recurring, have a technician assess for underlying alignment or pressure issues.
Preventive Maintenance: Stop Problems Before They Start
Preventive maintenance is the best way to avoid costly hydraulic failures:
– Schedule regular fluid checks and changes to maintain optimal performance.
– Replace filters on time to prevent contamination.
– Have hoses and fittings inspected for wear during routine servicing.
– Monitor operating temperatures and avoid overloading the system.
Proactive care keeps your equipment running efficiently and reduces the risk of unexpected breakdowns.
Partner with BFS Fleet Services for Expert Hydraulic Care
If troubleshooting doesn’t resolve the issue or if you uncover complex damage, our expert team at BFS Fleet Services is here to help. We provide comprehensive hydraulic diagnostics, hose replacement, and system repairs — on-site or in-shop — to get your equipment back to peak performance quickly. Learn more about our hydraulic services or book an appointment today.
