If you’re looking for steps on how to flush your power steering pump, look no further.
In automobiles, power steering (also power assisted steering (PAS) or steering assist system) helps drivers steer by augmenting steering effort of the steering wheel.
Hydraulic or electric actuators add controlled energy to the steering mechanism, so the driver can provide less effort to turn the steered wheels when driving at typical speeds, and reduce considerably the physical effort necessary to turn the wheels when a vehicle is stopped or moving slowly. Power steering can also be engineered to provide some artificial feedback of forces acting on the steered wheels.
Representative power steering systems for cars augment steering effort via an actuator, a hydraulic cylinder that is part of a servo system. These systems have a direct mechanical connection between the steering wheel and the linkage that steers the wheels. This means that power-steering system failure (to augment effort) still permits the vehicle to be steered using manual effort alone.
MadeInJapan shows us how to do a valuable power steering fluid flush.
Evidently the Toyota Camry uses about the same pump as a Volvo does as well as same type of fluid. Someone over on VS posted this and I thought it was worth sharing. Sorry that the pictures are of a Camry. If someone wants to try this, take pictures and update this later, that would be nice!
First jack up the front end. Do this so you won’t have to start the engine. Lifting the front end means you can simply turn the steering wheel and pump out the fluid.
Don’t allow the fluid to drop too much in the reservoir. Cautiously top up quickly. Cos if air enters the PS system, you’ll have to turn the wheels with the engine running to get the air out later and it makes a screeching noise…also I’m sure it’s not good for the steering rack. Once you start the fluid flowing, you shouldn’t have to turn the steering wheel any more, the fluid should just flow out by itself from the ‘siphon effect’. Within a minute, fresh fluid should be coming out the return side. The PS system only has about 1L of fluid in it. The total amount of new fluid to use is only about 1.5L. More than that would be a waste. When finished, remove the connectors and reconnect the return hose to the reservoir. There will be some small spillage cos new fluid will be coming out the reservoir inlet. This is where the rags (or underwear) comes in handy. Covered the reservoir area very well cos you don’t want it to get on the the belts. The amount that spills however will be very little. This entire process takes less than 30mins to do the DIY flush. This flush is as simple as doing an oil change. The connectors and hose cost about $5 at a hardware store. 1.5L or quarts of Dex III is also not very much.
MVS Forum Member Volgrrr replied:
Thanks for the well thought out and illustrated step-by-step procedure.
I don’t know if my PS fluid needs changing, (as the vehicle is regularly serviced), but I’m going to do mine in the next couple of days just to assure myself I can do it.
Anyway, if me and the Volvo maintenance crew both change the fluid, I think it is better to have the fluid changed too often than not often enough.
The job should be relatively straight forward following your clear instructions.
Thanks once again – much appreciated.