Liebherr grab cylinder repair becomes necessary when hydraulic cylinders begin leaking oil, binding during operation, or moving unevenly.
These grab attachments are widely used in scrap yards, recycling plants, and material handling operations around the world.
Models such as the Liebherr GM65 and GM70 multi-tine grabs rely on several hydraulic cylinders working together in sequence. Each cylinder plays an important role in opening and closing the grab evenly.
When one cylinder begins to fail, the entire attachment can quickly become unstable or difficult to operate.
At A1 Hydraulic Engineering, we regularly repair Liebherr grab cylinders used in recycling and heavy material handling equipment. Over the years we have seen the same patterns of failure appear again and again.
In this article, our team explains some of the most common signs that a Liebherr grab cylinder needs repair, what typically causes these problems, and what you can do to restore reliable grab operation.
The First Warning Signs of a Failing Grab Cylinder
One of the earliest signs of a problem is hydraulic oil leaking from the cylinder.
Operators usually notice oil appearing around the rod eye or dripping from the cylinder guards. While a leak is already a clear indication that something needs attention, the mechanical behaviour of the grab usually changes before the leak becomes severe.
A common symptom is that the tines stop closing in perfect unison.
Instead of moving smoothly together, one or two tines may:
- hesitate slightly
- lag behind the others
- struggle to close completely
In scrap handling or recycling operations, this quickly becomes noticeable because the grab begins to lose its ability to hold material securely.
In many cases, the issue is caused by internal wear or damage within one or more cylinders.
What Happens When One Cylinder Starts Failing
Liebherr grabs depend on multiple cylinders working together.
If one cylinder develops internal damage, the entire grab system becomes uneven.
Operators may notice:
- uneven tine movement
- delayed closing action
- loss of gripping power
- visible oil leakage
Continuing to operate the grab in this condition can place additional stress on the remaining cylinders.
Over time this can lead to further failures across the attachment.
Another Common Problem: Worn or Failed Spherical Bearings
Another failure we frequently see is collapsed spherical bearings.
These bearings allow the grab cylinder to pivot slightly as the grab moves through its working range.
When spherical bearings wear out or disintegrate, the cylinder can begin to move excessively inside its mounting points.
Operators often notice:
- cylinders moving too freely between mounting points
- visible play around the pin locations
- damage around the rod eye or barrel eye housings
If this continues, the movement can cause serious damage to the cylinder mounting areas and surrounding components.
Why Grab Cylinders Often Fail in Recycling Operations
Liebherr grab attachments operate in some of the harshest environments in heavy industry.
Scrap metal handling places significant stress on hydraulic cylinders because the grab regularly encounters:
- uneven loads
- shock forces
- abrasive debris
- continuous operating cycles
Over time, this can lead to wear or damage in key components such as:
- rods
- seals
- pistons
- spherical bearings
- barrels
Without proper repairs, these issues can escalate into larger mechanical failures.
In many cases, early Liebherr grab cylinder repair can prevent further damage to the grab attachment and surrounding components.
When Liebherr Grab Cylinder Repair Becomes Necessary
When hydraulic cylinders begin leaking oil, binding during operation, or showing excessive movement in their mounting points, Liebherr grab cylinder repair is usually required to restore proper operation.
Liebherr Grab Cylinder Repair: The Correct Way To Fix These Cylinders
When a Liebherr grab cylinder begins to fail, the most reliable solution is to inspect and repair the cylinder properly rather than attempting temporary fixes.
At A1 Hydraulic Engineering, we specialise in repairing grab cylinders used in attachments such as:
- Liebherr GM65 grabs
- Liebherr GM70 grabs
During the repair process, cylinders are inspected to determine the condition of their internal and external components.
Where required, we repair or replace damaged parts such as:
- rods
- pistons
- glands
- barrels
- spherical bearings
- seals
All machining and repair work is completed in-house at our workshop.
This ensures you get quality repairs and service.
For Fitters Who Want To Do The Reassembly
Many of our customers are experienced fitters and mechanics who want to handle part of the job themselves.
In these situations, the cylinder can be dismantled before being brought to us.
We can then inspect and repair the required components so the fitter can reassemble the hydraulic cylinder with confidence.
This approach allows our customers service flexibility while ensuring top quality parts and repairs.
When It Makes Sense to Bring the Complete Grab Hydraulic Cylinder
Most of our customers prefer to bring in the complete grab cylinder assembly.
In these cases our team can:
- dismantle the cylinder
- inspect all components
- identify worn or damaged parts
- provide a clear repair recommendation
To make the process easier, we offer a FREE dismantle, inspection and quote before any repair work proceeds.
This allows you to understand the condition of the cylinder and decide on the best course of action, without the stress.
Need Help With Grab Cylinder Repair?
If your Liebherr grab attachment is showing signs of cylinder failure, it is worth addressing the issue early before further damage develops.
Our team at A1 Hydraulic Engineering has more than 33 years of experience repairing hydraulic cylinders used across heavy equipment industries.
You can learn more about our dedicated repair service here:
Written by The A1HE Team
Date: 10.03.2026
Liebherr grab attachments are widely used in recycling and material handling operations worldwide according to equipment manufacturer Liebherr.
