Step by step guide on how to replace an automotive power steering pump, this
articles pertains to most vehicles though configurations may be slightly different
depending on application.
Before replacing a power steering pump make sure you have diagnosed the problem
properly. There are two components involved in the power steering system, the power
steering pump and the power steering gear box or rack and pinion. Always check the
power steering fluid level with the engine off. Flush the system completely with
new fluid on a regular basis to ensure longevity of the system. Running a hydraulic
pump without fluid can permanently damage the unit. Inspect the power steering fittings,
hoses, reservoir, cooler and pump for leaks. The power steering pump of a vehicle
supplies hydraulic pressure to the power steering box or rack via the power from
the engine. This pressure is then transferred through the high pressure hose and
then fluid returns to the pump through the low pressure hose. This system re-circulates
its fluid continuously, and when the pump fails it can make a moaning noise or make
the car difficult to steer.
Tools and Supplies Needed
Replacement power steering pump
Pulley removal tool
Pulley installation tool
Power steering fluid
Screw driver set
Safety eye wear and gloves
Inspect the serpentine belt when replacing the power steering pump.
Make sure all mounting hardware is tight to the engine block or cylinder
Flush the power steering system with new fluid. (Note: If there are metal
flakes in the fluid multiple flushes are needed.)
Never use a hammer to install or remove pulley or damage will occur.
Step 1 - Once the vehicle is safely positioned,
open the hood and remove the negative battery cable, this will avoid a short circuit
while performing repairs.