Power Steering Hoses
High and low-pressure hoses that carry power steering fluid between the pump, reservoir, and steering gear.
Power steering hoses are flexible lines that transport hydraulic fluid throughout the power steering system. The system typically uses two distinct hoses: a high-pressure hose that carries pressurized fluid from the pump to the steering rack or gear, and a low-pressure return hose that routes fluid back to the reservoir.
The high-pressure hose is reinforced with heavy-duty fabric and metal wire braiding to withstand pressures that can exceed 1,500 PSI. It also absorbs pressure pulsations from the pump. The low-pressure hose is simpler, designed to guide fluid under low pressure back to the reservoir.
Because they are located near hot engine components and flex with steering movements, power steering hoses can dry rot, crack, or leak over time. A leak in the high-pressure hose can spray highly flammable fluid onto hot exhaust manifolds, creating a fire hazard. A leak also leads to a loss of steering assistance.
Replacing a leaking power steering hose involves draining the fluid, unbolting the line fittings, routing the new hose securely away from hot or moving engine parts, and bleeding air from the hydraulic steering circuit.