Description: The recirculating ball
steering gear has been traditionally used on rear-wheel-drive cars
and many light trucks. This type of steering gear uses a worm gear
and ball bearings to rotate the sector shaft, which connects to the
pitman arm. The rack and pinion steering gear is usually found on
front-wheel-drive cars. A pinion gear moves a horizontal rack gear
connected to the steering linkage. Rack and pinion steering gears
are most common due to the popularity of front wheel drive. Their
compact design does way with the need for an idler arm, pitman arm and center link.
Purpose:
The steering gear
converts and multiplies rotational force from the steering wheel
into the force required to move the steering linkage, which steers
the vehicle.
Maintenance Tips/Suggestions: Check the power steering fluid level at
every oil change. This is also a good time to ensure that the power
steering drive belt is tight. Refer to your car’s owner’s manual for
specific recommendations on the type of power steering fluid to use.
Fluids need to be compatible with hoses and seals and in some cases
the recommended fluid may be automatic transmission fluids such as
Type F or Dexron®. The steering gear should be inspected closely at
least once a year, usually at the same time as a wheel alignment, or
more often as needed. The steering gear
should be checked for leaks, looseness, wear, and loose mounting bolts
and bushings. Symptoms of a worn steering gear include wandering, excessive
play in the steering wheel, no power assist when cold, and
fluid loss. If your car exhibits any
of these symptoms, have it checked out as soon as
possible by a qualified service technician.
