Hey guys, today we’re gonna show you how to
correctly fill and bleed the power steering system. Lets go! When you’re replacing a steering
component it’s really important to make sure you bleed all the air out of the system. So
lets get started. First raise the wheels of the vehicle off the ground and support the
vehicle with jack stands. Fill the reservoir to the cold line with OE approved power steering
fluid. With the engine NOT running, turn the steering wheel lock to lock 10 to 15 times.
This will normally purge most of the air from the system. Check and refill fluid as necessary.
Then start the engine and again, turn the steering wheel lock to lock 10 to 15 times.
Check and refill the fluid as necessary. All air should now be bled out of the system.
Some vehicles are more difficult to bleed than others. If you can seem to get all the
air out of the system or you’re noticing the pump is still noisy or fluid spews out of
the reservoir when the engine is shut off, vacuuming bleeding should get the job done.
Be sure the fluid is filled to the cold line and take a vacuum pump such as this and apply
15 to 18 inches of vacuum to the reservoir. You can modify an old power steering cap by
drilling a hole and installing a fitting that will connect up to your vacuum pump. Some
guys just use a tapered rubber stopper with a fitting to do the job. Keeping the reservoir
under this vacuum and cycling the steering wheel left and right for 5 minutes with the
engine running should be enough to purge the remaining air out of the system. You’ll notice
the fluid level may have dropped as you displaced an air pocket. Recheck and top off the reservoir.
One other important thing to remember, never use engine vacuum as your source of vacuum! You can seriously
damage the engine! That’s all for now. I hope this information has been helpful. Thank you
for your time and I’ll see you on our next edition of ProTech.