What causes foaming of power steering fluid?
Hydraulic power steering has a significant dependence on power steering fluid. When there is a problem with the power steering fluid, the impact can make the power steering stiff and uncomfortable to use.
But in general, problematic power steering will often show several signs before severe damage occurs. Damage to this type of hydraulic power steering usually indicates fluid seepage in the power steering system or foam's inside the fluid reservoir tank.
Yes, these two signs, if not corrected immediately, can cause more severe damage to the hydraulic power steering components. So, what causes the foaming of the power steering fluid? In this article, we will share information about the causes of foamy power steering fluid. See the information below.
1. Insufficient power steering fluid
The first cause of foamy power steering fluid that often occurs is insufficient power steering fluid. The insufficient fluid causes the power steering pump not fully to pump the power steering fluid.
There is empty air mixed with the fluid, which will enter the power steering pump. As a result, the fluid and air will blend and producing foam in the power steering fluid.
Foam in the power steering fluid will flow into the power steering rack and cause problems for the car's power steering, one of which is that the power steering becomes stiff or heavy when turning.
2. There is an air leak in the power steering system.
The next cause of foamy power steering fluid is an air leak that enters and flows into the power steering hydraulic lines. This air leak can occur in the pump section, especially in the o-ring and pump seal, connecting the power steering hose to the seal on the power steering rack.
Air leaks that occur are also often indicated by the seepage of power steering fluid in the leaking area. The power steering fluid that comes out is replaced with the incoming air. This condition will cause the power steering fluid to be deficient, resulting in foam and air bubbles on the power steering.
Also read:3. The power steering fluid specification is incorrect
The last thing that can cause foaming power steering fluid is to use a power steering fluid that does not match its specifications. Using a power steering fluid that does not meet these specifications will disrupt the power steering system's working process.
If the power steering fluid used is too thick, the power steering system's work will become stiff and heavy, whereas if it is too runny, it will cause the fluid to foam as the power steering fluid becomes hot and evaporates in the power steering channel.
Therefore, always use a power steering fluid that complies with the vehicle specifications to prevent the power steering system's problems, such as foamy power steering fluid.