Power Steering FAQ's

These are some of the most common questions that our customers ask. If you have a question that is not answered on this page, please contact us and we will do our best to assist you! 

What is different about a Turn One pump compared to my factory pump?

Turn One starts with a new OEM pump and modifies the internal components to reduce horsepower consumption. This, in turn, also reduces fluid temperatures.

Why does my pump expel fluid out of the cap during high performance driving events (autocross, road racing, oval track racing, etc)?

This is caused by the pump overheating. The reservoir has a calculated air volume to compensate for fluid expansion. Under normal driving conditions, the fluid will only reach a certain temperature and a given amount. When the system is run too hard, the pump overheats the fluid and the fluid expands beyond the calculated air volume in the reservoir. This causes the system to purge the fluid out of the valve in the cap.

How do I fix my system over heating problem?

All Turn One pumps are designed to reduce horsepower consumption, which in turn reduce fluid temperatures. In most applications, fluid temperatures will be significantly reduced to alleviate over heating issues and problems.

What is a flow restrictor and what does it do?

The flow restrictor reduces the output flow of the pump by decreasing the orifice size in the fitting. By doing this, it reduces the steering effort and gives you a more positive feel in the steering wheel. When done properly, reducing the flow does not adversely affect pump operation.

How do I install a flow restrictor?

The Turn One flow restrictor is designed to replace the factory restrictor. To install the restrictor, you first must remove the factory restrictor. The factory restrictor is the unit which the high pressure line interfaces with the pump. Using a 22mm socket/wrench, unscrew the factory restrictor and install the Turn One flow restrictor in its place. Tighten the new restrictor to 40 ft-lbs.
CAUTION: When removing the factory restrictor, there is a spring loaded plunger behind the restrictor. If the plunger and spring fall out of the pump, install the spring first and then install the plunger with the hex-nut end first.

What is the maximum steering system operating temperature?

Turn One recommends 275º F as a maximum fluid temperature.

What power steering fluid should I use?

Turn One recommends a brand name synthetic power steering fluid, such as Joe Gibbs Racing Power Steering Fluid.

How do I bleed the power steering system?

Turn One recommends purging the power steering system of any old fluid when replacing any old steering components. For more information on how to purge the system of old fluid, see "How do I purge the power steering system." To bleed the power steering system, first lift the vehicle so that the front wheels are off the ground. Add fluid to the reservoir so that the fluid level registers on the dipstick. Without the engine running, cycle the steering from lock to lock, making sure the reservoir doesn't go dry. Continue this process until no air is present in the fluid. With the front wheels off the ground, start the engine and make sure the reservoir level doesn't drop significantly. If it does, add fluid so that the fluid registers on the dipstick. Cycle steering from lock to lock, again until no air is present in the fluid. Shut engine off and set the reservoir fluid level to the "cold" setting on the dipstick. The power steering bleeding procedure is now complete. If you have problems with this process, please contact us for further assistance.

How do I purge the power steering system?

Start by lifting the front wheels of the vehicle off the ground. Remove power steering hoses from the pump or steering unit. Place drain pan under front of vehicle. Cycle steering from lock to lock until system is purged of the majority of fluid.
NOTE: There will still be residual fluid left in the system. This will mix with the new fluid, and will not cause any adverse side affects.