More than 15 Years of Experience in Hydraulic Repairs

Hydraulic Repairs Services

More than 15 years of experience in Hydraulic Repairs & Maintenance

Welcome to CJ Plant. We are one of the UK’s leading hydraulic repair specialists. We specialise in the repair and maintenance of all makes of hydraulic pumps, motors, final drives, swing gear boxes, centre swivel joints, control valve blocks, transmissions, and more!

Experience with over 20+ brands

Our Wide Range Of Hydraulic Services

Hydraulic Pump Repair
Hydraulic Motor Repair
Final Drive Repair
Swing Gearbox Repair
Centre Swivel Joint Repair
Control Valve Block Repair

Fast, efficient, and cost-effective quality service

We provide effective maintenance service with speedy evaluation, diagnosis and accurate quotes for quick turnaround times to get you back up and running.

If required we can arrange collection of your hydraulic unit for free, pick it up at expedited speed, and then carry out a full inspection. We then provide you with our report and quote to repair. We have an excellent network of parts suppliers, which helps us to keep machine downtime to a minimum and lets us offer cost-effective repairs.

We are a highly dedicated, skilled and professional team,  with our service engineers working from our custom-built workshop, with repair, testing and diagnostic facilities. Our engineers are highly skilled, and their focus is on quality, ensuring that all units are repaired back to OEM standards, repackaged as if it was new equipment and ready for new projects once more.

Our team of experts specialise in the repair, rebuilding and regular servicing and maintenance of a range of hydraulic equipment and parts, all to the leading makes of machinery/OEM’s; including JCB, Komatsu, Volvo, Caterpillar, Liebherr, Linde, Hitachi, Hyundai, New Holland, Terex, John Deere, Yanmar, Hamm, Kubota, Takeuchi, Kobelco and more.

Hydraulic repair servicing

Premium Hydraulic Pumps Repair Service

Our hydraulic repairing service covers all hydraulics. Whether you need hydraulic motor repairs or someone to fix your hydraulic pumps, look no further than CJ Plant. We service all things hydraulic, whether the parts are from family-owned businesses or leading manufacturers, we can handle them all.

Our pump strip and quote service is free, and you are under no obligation to take us up on the quote that our workshop provides – though no doubt you’ll find us the most competitive option for your business. We have an optimised and custom-built testing rig to thoroughly test all hydraulic repairs and we offer a 12-month written warranty for all work done.

Test Rig Facilities

We have optimised and custom design testing rig to aid our Hydraulic Repair Specialists ability to maintain and repair any hydraulic issue. The rig is capable of testing and fault finding at various speeds and pressures, simulating the actual working conditions, in line with OEM standards. The rig has filters to ensure that the fluid used during the test is extremely clean, preventing your unit from becoming contaminated.

Our investment in our state of the art facilities and equipment enables our customers to have complete peace of mind and confidence that their plant and machinery will be up and running in the shortest possible time. We provide exceptional service, and our customers know that our hydraulic and engineering service promises made are promises kept.

We collect, strip, and inspect all hydraulic units FREE of charge

Sectors We Work In

When you need reliable plant maintenance, Hydraulic Motor maintenance is vital for keeping your machinery up and running and avoiding expensive downtime. Amongst the machines whose hydraulic motors we service include Bulldozers, Crushers, Dump Trucks, Excavators, Forklift Trucks, Road Rollers, Road Planers, Skid steer Loaders, Telehandlers, Tractors, Tampers, Wheel Loaders.

We service hydraulic equipment, CJ Plant believes in taking the effort of the repair out of your hands, for convenience’s sake. No need to send anything to us, we will come and collect for free. We won’t go ahead until you’re happy with the highly competitive quote we provide.

Tree Surgery
Scrap Metal
Plastic Injection Moulding
Drilling and Piling
Material Handling
Mobile Plant
Civil Engineering

All our work is covered by a 12-Month written Warranty

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Hydraulic Repair Service FAQ's

Hydraulic Repairs make up the bundled processes of diagnosing, servicing and finally rectifying any and all issues within hydraulic components and/or systems. Over time, hydraulic components face wear and tear, and this damage spreads throughout the system.

The hydraulic repairs process involves taking apart and thorough examination of the hydraulic components in question, whether that be a hydraulic ram, hydraulic cylinders etc. Then, there will be an identification of the problem, followed by a thorough cleaning, repair and reassembly of parts.

Hydraulic pumps are a crucial component in hydraulic systems. They convert mechanical energy from power sources into hydraulic energy by generating a sufficient flow to overcome pressure caused by the load. When the pump achieves this, they’ve achieved its role in hydraulic system design.

Hydraulic pumps are vital components and you should call for hydraulic repairs if one ever becomes faulty.

These are some of the signs of faulty hydraulic pumps:

  • Excessive Noise or Vibration
  • Decreased Performance
  • Overheating
  • Leaking Fluid
  • Irregular Fluid Flow
  • Increased Energy Consumption

Hydraulic motor machinery is mechanical actuators that convert hydraulic or fluid energy into rotary motion. They are not to be confused with a hydraulic cylinder, which converts energy into a linear motion.

Call for hydraulic repairs when you notice the following:

  1. Loss of Power
  2. Abnormal Noises
  3. Overheating
  4. Leaks
  5. Irregular Movement

A hydraulic pump and motor are two key components in a hydraulic system, and while they operate based on similar principles, they have distinct functions.

  1. Hydraulic Pump: The primary function of a hydraulic pump is to convert mechanical energy (like from an electric motor or engine) into hydraulic energy by generating flow. This means it takes in a volume of fluid from a reservoir at low pressure and sends it to the hydraulic system at a higher pressure. The high-pressure fluid can then be used to perform work in the system, like moving an actuator.
  2. Hydraulic Motor: On the other hand, a hydraulic motor is a type of actuator that converts hydraulic energy back into mechanical energy. It takes in high-pressure fluid from the system, which causes it to rotate, and this rotational movement can be used to perform work, like driving wheels or a conveyor belt.

A hydraulic pump and motor differ due to pumps supplying the hydraulic fluid under pressure and hydraulic motors use that fluid to create motion. Although they are built similarly and operate based on similar principles, their roles in a hydraulic system are opposite to each other. Nonetheless, CJ Plant provides excellent service on both hydraulic pump and motor repair.

Maintaining your hydraulic motors is a matter of scheduling regular checks.

Hydraulic fluid checks: Regularly test the hydraulic fluid levels and maintain a proper level that is clear of contamination. Sample the fluid for any changes in colour and odour. If the water takes on a milky hue, then it may be contaminated.

Change the filters: Filters keep pollutants that will lead to some of the more common failures of a hydraulic motor. Considering it’s not easy to spot contamination when you see it, it may be a good idea to simply have filters on hand and schedule their changing.

Replace seals: Seals are responsible for keeping the motor from leaking. Over time they will degrade, especially if contamination has been in your motor for any period of time.

Hoses and fittings: All hoses and fittings should be checked for damage. This could be from fraying, stretching and kink. Anything with dents, or signs of corrosion, needs to be replaced. On top of that, ensure couplers are clean and secure any fittings that can be.

The temperature needs to be regulated within a motor to ensure its smooth function, and to avoid the following: 

Fluid Thickening – Viscosity is the resistance a liquid has to parting from itself. For example, when water gathers on a ceiling and drips slowly. This is gravity pulling away water. Low temperatures can increase the resistance of the hydraulic oil within the pump, leading not only to productivity issues but also to cavitation. 

Fluid Thinning: Meeting a certain heat threshold can cause a motor’s fluid to thin. This makes lubrication difficult, and it also makes escape in the form of leaks much easier. 

Fluid Oxidisation: Oxidisation is the process of a substance being mixed with oxygen. Whilst heat can cause fluid to thin, as explained in the last example, extreme heat can cause oxidisation, thereby thickening the fluid. Sometimes it becomes so thick that it blocks the flow of water, which also causes a buildup of heat due to the motor’s inability to dissipate and regulate its own temperature. 

Both air and water can pollute a hydraulic motor. The following are the three different types of contamination that can destroy a piece of machinery. 

Cavitation is the process of the separation and implosion of the dissolved air within hydraulic oil. The implosion results not only in a distinct whining sound but also causes damage to the pump over a period of time. This damage can also spread to other components within the motor. 

Aeration is the process of air invading the motor from the outside. This is almost always due to some sort of structural damage on the motor, such as loose connections, or even a leak. The contamination makes a knocking sound. 

Water Contamination is a fairly basic process. It relies on there already being structural damage to the machine. If the water receives too much oxygen (oxidation) or falls in temperature to the point of freezing, it will degrade the inner components of the motor over time. The fluid will then take on a milk-like look.