Some C/K models have a hydraulic booster. The hydraulic booster provides power assist using fluid pressure from the power steering pump. The booster assembly is located on the left front cowl. The master cylinder mounts onto the booster assembly.

The power steering pump supplies the hydraulic pressure needed to operate the brake booster. The pump is belt-driven. The pump mounts to the engine. The pump provides a continuous fluid flow to the booster when the engine is running.

Three flexible hoses route power steering fluid through the hydraulic booster system.

Notice: Hydraulic brake systems use two distinct and incompatible fluids. Power steering fluid is used in the hydraulic brake booster system. Brake fluid is used in the master cylinder and brake pipes. Use extreme care when selecting brake system fluids, or seal damage can result. Refer to General Information to select the correct fluid.

Use the correct fluids. The master cylinder and brake system use brake fluid. The hydraulic booster system uses power steering fluid.

Do not reuse brake system fluids. Do not mix power steering fluid with brake fluid. Fluid contamination may result in swelling and deterioration of rubber parts. This can lead to reduced brake performance and the eventual loss of braking capability.

If contamination occurs, flush the hydraulic booster system. Flushing the system involves draining the old fluid and replacing that fluid with clean fluid. Refer to Power Steering System Flushing in Power Steering System.

Service booster components in a clean work area separate from the brake servicing area. Wash hands before changing work areas. Do not use the same containers for brake and power steering fluids.