Hydro-Boost Unit

Use following list of symptoms to aid in diagnosing Hydro-Boost problems:

Brake pedal returns slowly:

• Check for restriction in return line between Hydro-Boost and power steering reservoir.
• Check for incorrectly connected return line.
• Reposition brake pedal or add return spring.
• Replace Hydro-Boost.

Brakes grab:

• Tighten power steering belt.
• Flush steering system while pumping brake pedal.
• Replace Hydro-Boost.

Hydro-Boost chatter/Pedal vibration:

• Tighten power steering belt.
• Check for low fluid level.

Accumulator leaks down/No reserve brake application:

• Replace Hydro-Boost.

High brake pedal effort:

• Tighten or replace power steering belt.
• Low fluid level.
• Replace Hydro-Boost.

Brakes apply by themselves:

• Restriction in return line.
• Return line not connected correctly.
• Replace Hydro-Boost.