Updated: 04 september 2026

Published: 22 April 2020

Guide to effective maintenance of hydraulic hoses

Hydraulic hoses operate under high pressure and are a critical part of any hydraulic system. Safety and operational reliability depend to a large extent on the hoses being selected correctly, inspected regularly and replaced in good time.

If maintenance is neglected, a failing hose can lead to serious personal injury, fire risk, environmental problems and costly downtime. Fortunately, many problems can be prevented with fixed routines, correct installation and attention to temperature, cleanliness and protection.

Maintain hydraulic hoses with regular inspections, correct temperature and pressure matching, clean installation and preventive hose protection. Replace immediately in case of leakage, cracks, bulges, rust or twist – and reorder easily via the PTS label at Hymatik.

Why maintenance is critical

Effective maintenance is about safety, economy and the service life of your equipment.

Safety: High-pressure oil can cause serious injury, fire and slippery surfaces.
Operating economy: Fewer unplanned stops, lower oil consumption and fewer emergency purchases.
Equipment life: Less wear on pumps, valves and cylinders.

Quick overview – a checklist you can use right now

To keep track of maintenance, you can use the following simple routine:

Daily/weekly: Look for leaks, oil on surfaces and unusual noises.
Monthly: Visual inspection for cracks, wear, bends, twist and loose couplings.
Quarterly: Check hose clamps, bend radius and hose routing.
During service: Measure operating temperatures and compare them with the hose specifications.
Always during installation: Keep the hose clean, blow through and plug the ends, avoid twist and over-tightening.
Replace immediately in case of: Dripping or spraying, blisters, rusted reinforcement, cover damage or visible kinks.

Frequently asked questions (FAQ)

How often should I inspect hydraulic hoses?
At least monthly under normal operation, and more often in harsh environments with dust, heat, chemicals or vibration.

How can I tell if my hose is running too hot?
If it is too hot to hold for about 5 seconds, the operating temperature is probably too high.

May I tighten a dripping coupling instead of replacing the hose?
Only if the leak clearly comes from the coupling and the seal is intact. If the hose is damaged, it must be replaced.

Can I crimp and fit the hose myself?
Yes, provided you follow the manufacturer's instructions, ensure cleanliness and test for leaks.

Which hose protection should I choose?
That depends on the type of wear, temperature and environment. Contact Hymatik for advice.

Inspection routines and intervals

How to establish a fixed routine

Start by assigning responsibility for the inspections and record the date, findings and any actions taken. Set intervals based on environmental conditions such as dust, chemicals, vibration and operating hours.

A simple checklist, ideally combined with photo documentation, makes it easier to follow developments over time.

What to look for

At every inspection you should pay attention to:

Leakage in the form of an oil film, drops or wet areas at hoses and fittings.
Wear or damage to the outer cover, including cracks and visible reinforcement.
Twist and overly sharp bends, which can significantly shorten service life.
Corrosion at couplings and metal reinforcements.
Thermal effects such as discolouration, hardness or brittleness.

Leakage – find the cause and stop the damage

If you discover a leak, always switch off the system and release the pressure before inspecting at close range.

First check the couplings for looseness and seal wear. Clean the area, wipe it dry and restart briefly to locate the seepage.

If the hose itself is damaged, it should be replaced – sealing alone is rarely a durable solution.

Contamination – keep the hose clean from production to installation

Cleanliness is crucial for both hoses and the components of the hydraulic system.

The hose should be blown through from both ends before installation and fitted with plugs or caps so that dirt cannot enter. Installation should take place in as clean an area as possible.

If there has been a breakdown or heavy contamination, flushing the system is recommended. Remember that dirt particularly damages valves, pumps and cylinders – not just the hose itself.

Temperature and operating conditions

The hose's temperature rating must always match the actual operating temperature of the oil.

A simple rule of thumb: if you can't hold on to the hose for about 5 seconds without discomfort, the temperature is probably too high compared with the specification.

Excess temperature leads to micro-cracks in the inner tube, loss of flexibility and a significantly shorter service life. In hot zones, heat shields, revised routing or hoses with a higher temperature rating may be necessary.

Correct installation and routing

To minimise the load on the hoses, you should:

Respect the minimum bend radius and avoid sharp kinks at the couplings.
Avoid twist during installation and ensure the correct angle on fittings.
Allow the hose sufficient slack for movement and vibration.
Keep clear of sharp edges and use protection where contact cannot be avoided.

Hose protection in tough environments

In environments with heavy wear, extra protection can extend the hose's service life considerably.

Spiral sleeves, textile sleeves and spring guards are often used at wear points and on moving parts.

If your hose is exposed to very heavy wear, consider buying protection for it. See our range of hose protection here.

Replacement – when and how (safety first)

When should you replace the hose?

The hose should be replaced in case of:

Visible oil leakage.
Blisters or bulges.
Breaks in the outer cover with exposed reinforcement.
Severe corrosion.
Clear twist or kinks.
Recurring temperature problems.

Step-by-step replacement

Shut down the system and fully relieve the pressure. Cover the area and use suitable protective equipment.

Mark the hose and preferably take photos of the routing and fittings before dismantling.

Keep the new hose plugged until installation, tighten couplings according to the manufacturer's data and test at low pressure first to check for leaks.

Fast reordering via the PTS label

If the old hose has a PTS number, you can call or e-mail the number to Hymatik.

We then produce an identical hose, ready for collection or shipping, without you having to hand in the damaged hose.

Stock, planned maintenance and total economy

By scheduling replacement during periods of low load, you can minimise downtime.

Keep critical hoses in stock based on consumption and delivery time, and record service life as well as fault types to continuously optimise your choices and preventive measures.

Buy your hose here