Definition: A means of hydraulically assisted steering. A belt-
driven power steering pump creates system pressure. The
pressurized fluid is then routed into a cylinder that helps push
the wheels one-way or the other when the steering wheel is
turned. The two most common power steering complaints are noise
and leaks. A slipping drive-belt on the power steering pump can
produce a loud squeal, especially when turning sharply. A bad
valve or bearings in the pump itself can make a growling noise.
Leaks most often occur at hose couplings or on the power
cylinder seals. In power rack & pinion steering units, internal
leaks can be a major problem (which require replacing the entire
unit with a new or rebuilt assembly). The only required
maintenance for this system is to check the level of the power
steering fluid periodically. If low, check for possible leaks,
then add fresh fluid to the pump reservoir. Running the system
low can ruin the pump. © 2000 - 2002 Vincent T. Ciulla