Pallet Jack Repairs, Manual Stackers & Hydraulic Equipment Maintenance
Trolley Clinic brings mechanical engineering standards to warehouse asset maintenance. We provide hydraulic overhauls, structural repairs and rebuilds, and bearing and wheel repairs for the full spectrum of manual and electric material handling equipment in Gauteng—including standard 2, 2.5, 3 and 5-ton pallet jacks, high-lift jacks, manual economy stackers, vehicle jacks, and specialised low-profile fleet units.
What Goes Wrong:
At Trolley Clinic, we see the same equipment faults every day—here is a simple breakdown of what actually goes wrong on the warehouse floor.
Frame & Shaft
Forklift Crashes: Warehouses are busy places. Forklifts or vehicles frequently ram straight into the sides of pallet jacks, bending the heavy steel frame out of shape.
The Main Pivot Shaft (The Backbone): This is one of the most important parts of a pallet jack. If this shaft is dry and has no lubrication, the jack will freeze and refuse to lift at all. If the shaft slips slightly out of its holding brackets on one side, the jack will lift unevenly, leaving you with one “lazy”, sagging fork.
Bent Push Rods: The metal rods hidden under the forks take a massive beating. Chronic overloading or off-centre loading bends them out of shape until they are ready to snap.
Wheel & Bearing Collapse
- Rusted Bearings: Water, cleaning chemicals, and moisture on the floor get inside the wheels, causing the internal bearings to rust, seize up, and completely fall apart.
- Grinding Wheels: Once the bearings disintegrate, the outer wheel collapses on itself and starts grinding directly against its holding shaft. This makes the jack incredibly heavy and difficult to push.
- Debris Choking: Warehouse floors are often littered with plastic shrink-wrap, nylon strapping, and wood splinters. These fragments get tightly wound around the wheel axles, creating massive friction and eventually locking the wheels up completely.
Hydraulic Pump Issues & DIY Mistakes
Trapped Air (The Invisible Fault): Often, a pump is not actually broken—it simply has air bubbles trapped inside the hydraulic system. This stops the pump from building pressure to lift, but it can usually be resolved by a quick system bleed.
Wrong-Order Assemblies: Fixing a hydraulic pump can be very overwhelming. We often see cases where people try a DIY fix but put the internal & seals back in the wrong sequence.
Oil Contamination & Stuck Valves: Dirty or contaminated hydraulic oil is a massive problem. If dirt, dust, or tiny debris particles get into the fluid, they block the narrow internal pathways and cause the valves to get stuck. This leads to frustrating issues—like a jack that lifts up perfectly fine but refuses to come back down.
The Biggest Culprit: Missing Basic Care
- Ignoring the Manual: The single biggest cause of premature breakdowns is improper maintenance by the users. Manufacturer guides explicitly recommend checking and lubricating the wheels and moving parts regularly, but operators often ignore these recommendations. Without basic care, parts dry out, freeze, and break down long before they should.
Our Professional Pallet Jack Repairs Process
At Trolley Clinic, our repair process applies true mechanical engineering standards to get your equipment operational again. We perform complete teardowns to overhaul faulty hydraulic pumps, clear and rebuild seized pivot mechanisms, and replace worn bearings and wheels using high-quality components. For structural damage, we utilise heavy-duty MIG welding to straighten and reinforce bent steel frames, backed by the unique capability to use CAD systems to custom-remanufacture components from scratch when parts are unavailable. Contact our team today to get your material handling equipment rolling again.
In-House Machining & Structural Pallet Jack Rebuilding
We don’t just swap out parts; we apply real mechanical engineering to your warehouse equipment. At our local facility, we handle heavy-duty structural fabrication and in-house MIG, TIG, and arc welding. For precision machining, we work directly with a trusted network of local partner machine shops and turners to custom-manufacture replacement pins, bushes, and axles that match OEM specifications perfectly.
Whether your team operates standard manual pallet jacks or complex stackers, we tackle the technical hydraulic and structural tasks other shops turn down. From structural chassis alignment to industrial welding on cracked steel frames, we ensure your equipment returns to the floor structurally sound, safe, and ready for warehouse operations.
Frequently Asked Questions
We can do both! We offer on-site servicing for standard maintenance and quick fixes to get you moving right away. However, it depends entirely on the severity of the damage. If a unit has severe hydraulic issues or requires heavy structural welding, it will need to come to our Randburg workshop. To help keep your warehouse running, we can provide a temporary loan unit while we fix yours. Please note that our loan units are limited and subject to availability, so we arrange them on a first-come, first-served basis.
Yes. Because we utilise official technical diagrams to precisely match component sizes, we can source and fit the correct seals, wheels, and mechanical parts for almost all major makes and models of manual pallet jacks and lifting stackers.
This is a classic symptom of an internal hydraulic pressure loss. It usually means the rubber oil seals have worn out, a valve is jammed, or the fluid level has dropped. Because the system can’t trap the hydraulic fluid properly, it can’t build the pressure required to raise the forks. Stripping the pump down to replace the seals and refilling it with fresh fluid fixes this completely.
Yes! Very often, if a pallet jack was tilted, left on its side, or sat idle for a long time, an air bubble can get trapped inside the hydraulic valves (called an “air lock”). You can easily bleed the system yourself right on the warehouse floor:
Pull and hold the handle control lever all the way up into the “Lower” position.
While holding that lever up, pump the main handle up and down vigorously 10 to 15 times.
This forces the trapped air bubbles out of the pumping chamber and pushes the hydraulic oil back where it belongs. If you flip the lever back down to “Lift” and it still won’t pump up, then you know it is a genuine mechanical issue like a broken seal or a fluid leak that needs to come to our workshop.