Power Steering Boxes
Power Steering Box Repair & Reconditioning
Pro Power Steering repairs and reconditions hydraulic and manual steering boxes for classic, modern and commercial vehicles. We can assess your original unit, identify the likely cause of a fault and discuss repair, exchange or replacement options. Individual customers, garages, workshops and trade enquiries are welcome.
How a Power Steering Box Works
A steering box transfers movement from the steering wheel to the road wheels through the steering linkage. Inside the unit, the input or worm shaft moves a piston or recirculating-ball mechanism, which turns the sector shaft. In a hydraulic system, a control valve directs pressurised fluid to provide steering assistance.
Because steering-box designs, ratios, mounting points and shaft details vary, the original unit, vehicle registration or VIN and all casting and label numbers should be checked before supply or repair is confirmed. We do not match a steering box from the vehicle model alone.
Manual Steering Box Repair
Manual steering boxes use a mechanical worm-and-sector or recirculating-ball arrangement without hydraulic assistance. Wear in the worm shaft, sector shaft, bushes, bearings or adjuster can cause free play, stiffness, poor self-centring or uneven steering. We inspect the complete unit before recommending repair or reconditioning.
Common Steering Box Faults
Typical symptoms include fluid leaks, excessive play at the steering wheel, knocking, stiffness, uneven assistance, wandering, poor self-centring and noise when turning. Similar symptoms can also come from linkages, joints, bushes, the pump, hoses or suspension components, so correct diagnosis is important.
Our Repair and Reconditioning Process
Each steering box is cleaned and inspected before dismantling. We assess the shafts, housing, bearings, bushes, seals, valve and internal wear surfaces. Serviceable units are rebuilt with suitable replacement components, adjusted to the correct specification and tested before return. If major hard parts are damaged or unavailable, we will explain the available alternatives before work proceeds.
Correct Identification Matters
Vehicle manufacturers may use several steering-box variants within the same model range. Right-hand-drive specification, build date, steering ratio, mounting points, input and sector-shaft details, ports and OE numbers can all affect compatibility. Please send the registration or VIN, clear photographs and every number from the original unit.
Fitting, Bleeding and Maintenance
After fitting a hydraulic steering box, the system must be filled with the correct fluid and bled carefully to remove trapped air. Hoses, the pump, reservoir and steering linkages should also be checked. Final free play and alignment must be confirmed by a competent technician. Do not over-adjust a steering box: incorrect adjustment can cause stiffness, poor self-centring or internal damage.
