By Seb von Teichmeister, owner of Mobihose.
A fast fix is only half the job. The real value comes from diagnosing the root cause properly, repairing it with precision, and making sure it doesn’t happen again. There are key steps to take to diagnose the issue through verbal descriptions, visual inspections and mechanical test. Repairs can take the form of strip backs and rebuilds, machining new hoses or minor part replacements.
In this article we take a look at the step by step process used by Mobihose to get you up and working again as soon as possible.
How we diagnose & repair a hydraulic cylinder issue
When a hydraulic hose or ram fails, the knock-on effects can be serious – lost productivity, downtime, delayed projects, and added cost. We know that when leaks start, power is lost or moving parts seize up, time is of the essence.
But getting it working again isn’t just a matter of swapping seals and hoping for the best. A proper repair means a proper diagnosis. Here’s how we do it, step by step — the Mobihose way.
Step 1: Understand the symptoms from the customer
Every job starts with listening.
Whether it’s a site manager on a construction job or an operator running vintage ag machinery, the first clues usually come from the customer:
- A visible leak
- A loss of power or movement
- A pressure build-up
- Unusual noises or jerky motion
We’ll ask a few focused questions to get a better idea of what’s going on, how long it’s been happening, and how the equipment is typically used. This helps us identify the issue and remedy far quicker.
Step 2: Visual inspection & assessment
Once we’ve got a clear description of the issue from the customer, the next step is a hands-on inspection of the part in question — whether that’s a hose, a ram, or another component in the hydraulic system.
We’ll carry out a visual check for obvious faults like:
- Leaks or weepage
- Cracks, abrasions or surface damage
- Misalignment or poor installation
- Signs of overpressure or wear and tear
Where it’s safe and practical, we may also observe the part in action, which can reveal symptoms that aren’t obvious at rest, like surging, juddering, pressure drops or loss of movement.
This inspection helps us:
- Confirm the likely cause of failure
- Decide whether further strip-down or testing is needed
- Identify any underlying issues elsewhere in the system
If the fault is within a component like a cylinder or valve, we’ll remove it for a detailed strip and diagnose. If the issue is with a hose or fitting, we’ll assess the failure, replace with the correct spec part, and ensure the system is safe to run.
Through the description from the site operative, and the visual inspection we are able to diagnose 95% of issues and identify the best course of action. Only occasionally do we need to undertake further tests.
Step 3: Strip & diagnose the fault
If the part needs a full repair, like a hydraulic cylinder, valve block, or complex fitting, we’ll remove it and carry out a complete strip-down, if needs be. This will be carried out onsite in our mobile service vans, whenever practical.
This allows us to inspect internal components and look for:
- Worn or damaged seals
- Scored rods or barrels
- Contamination inside the system
- Distortion, corrosion or mechanical damage
Where hoses are concerned, we’ll cut back and inspect for:
- Internal blistering or delamination
- Incorrect crimping or fitting spec
- Damage from external factors like heat, abrasion, or movement
The goal is always the same: get to the root cause of the failure, not just treat the symptom and to resolve the issue within mere minutes.
Step 4: Repair or replace to spec
Once we’ve diagnosed the issue, we take action.
That might mean:
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Rebuilding a hydraulic cylinder with new seals, rods or barrels
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Replacing a hose with one correctly rated for the pressure and fluid type
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Custom machining parts if they’re not readily available
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Cleaning and flushing the system to remove contaminants
We use only high-quality parts and materials, fitted by experienced technicians who know how to get things right the first time. Where needed, we’ll upgrade parts to improve longevity or performance, not just replace like-for-like.
Step 5: Test under pressure
Before anything goes back into service, we run rigorous pressure testing to check:
- The fault has been properly resolved
- There are no leaks or pressure losses
- All movement is smooth and consistent
We test to, and often beyond, standard working pressures, making sure your system is safe, strong, and ready to go.
Step 6: Advice to prevent future failures
Once testing is complete, we’ll sign it off for use and give clear advice on any further action needed.
This might include:
- Recommended hose replacement schedules
- Better routing or support for hoses
- Upgrading fittings or materials for your working environment
- Checking for contamination, misalignment, or overpressure elsewhere in the system
We’re not just here to fix the problem, we’re here to stop it happening again.
Why it matters
Hydraulic systems don’t fail for no reason. At Mobihose, we use our years of experience, expert knowledge, and a bit of old-fashioned curiosity to figure it out and fix it properly.
Whether it’s a split hose, a leaking cylinder, or a pressure problem you can’t quite pin down – we’ve seen it, we’ve sorted it, and we’ll get you back to work.
