How power steering specialists Check Leaks
A power steering leak can start out small but soon become a large problem. By identifying the leak early on you can save time and money by finding the correct solution for the problem. Below is a step by step guide to identifying a power steering leak.
Visual Inspection First
Step 1 – Visual Inspection of Power Steering System Components. The first step in checking for leaks is to look for any signs of leakage while the engine is off. Check the reservoir cap for any signs of leakage. Look for any signs of leakage from the reservoir body. Check all the hoses and pipes for any signs of cracking or wet spots. Check underneath the car for any signs of leaked fluid. Power steering fluid typically is a reddish or clear liquid. A greasy looking substance around a fitting or pipe is also indicative of a leak.
Pressure Testing the System
With a pressure gauge attached to the power steering pump, the technician can check the system’s pressure at idle as well as under load. A typical hydraulic system should have around 1,000 to 1,500 psi of pressure at idle. If the pressure drops at idle, it usually indicates a worn power steering pump. However, if the pressure drops only when turning the wheel, it indicates a problem with the control valve or a failing rack and pinion.
UV Dye Tracing
UV Dye Tracing for Power Steering Leaks. When the leak is not evident, by adding a UV dye to the fluid and then running the vehicle for a short period of time, enables the exact location of the leak to be seen. Under UV light, the fluid with the added dye glows bright yellow-green. By following the colour with your eyes, you will be able to determine if the leak is around seal lips, a hose union or along the rack housing. The use of a UV dye is far more precise than depending on visual inspection for finding the source of leaks in power steering systems.
Rack and Seal Inspection
The steering rack leaks are another common place for leaks to occur. The inner seals of the rack can deteriorate and cause fluid to leak from the rack. When inspecting the rack for leaks, the first thing to do is to remove the rack gaiters. Once the gaiters are removed you can inspect the inner seals and the area where the rack rod goes through the housing for any signs of fluid leakage. Fluid leaking from the inner seals of the rack can sometimes be hidden from view by leaking down the exterior of the gaiter.
Once you have found the source of all leaks, you can begin to repair them. Only parts that are required to repair leaks should be replaced.
