The REMAN journey of a hydraulic pump

For more than 50 years, TVH has been remanufacturing used parts. Through vast technical knowledge, robust processes and continuous training, our company has earned a reputation for high-quality remanufactured parts. Rebuilding hydraulic pumps is an essential activity of the electromechanical REMAN workshop in Waregem, Belgium. To illustrate TVH’s way of working, Joffrey Deylgat (Manager Remanufactured Spare Parts) guides us through the remanufacturing journey of a hydraulic pump.

1. Inspecting

“Everything starts with the core,” Joffrey explains. “We only select the best units to ensure a reliable end product. The process involves two stages. First, we check the pump upon arrival to confirm all components are present and the wear is within normal limits. Once it reaches the technician's bench, they perform a deeper assessment. For hydraulic pumps, this includes a visual assessment of the shaft and splines, as well as any other physical damage, before we proceed.
 

2. Dismantling

When a pump passes inspection, the technician strips it down to the bare bones and continues the visual inspection. “Our technicians use an extensive library of technical manuals and exploded views to ensure everything is removed correctly. We’ve spent decades building this database,” says Joffrey. “It includes original manufacturer specs and decades of internal notes from our experts.” This ensures the technician handles every pump with total precision.

3. Cleaning

A used hydraulic pump often arrives covered in years of grime. Once dismantled, every single internal part undergoes thorough cleaning. “The technician also laps and polishes components such as plungers, mirrors and plunger blocks to ensure perfect power transfer. They complete this process using both hand-finishing and precision machining. All parts need to be in perfect condition. If there’s any doubt, we simply fit a new one.”

4. Repairing

Once the technician has all the necessary parts, they start reassembling the core according to its original specifications. Every detail is important: the order of assembly, the right tools, the alignment, the correct torque settings, etc. Some assemblies even require custom-made tools. “This is where we go beyond a simple repair,” says Joffrey. “We don’t just fix what’s broken, we remanufacture. That means we replace all high-wear components by default, including seals, filters and bearings. If another non-default part shows any signs of wear, we replace it as well. Every REMAN pump must meet the original specifications of the brand-new part. 

5. Testing

“No pump leaves the workshop without proving its worth,” Joffrey concludes. “We invested heavily in state-of-the-art test benches that allow us to replicate real-life working conditions. These test benches are the ultimate judge. We subject the pumps to demanding pressures, flows and temperatures to ensure flawless performance. Because we are confident in our process, every remanufactured pump comes with the same one-year warranty as any new part.”