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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 68 (Brake System - General Information -- F250-F550 Super Duty) >> Diagnosis And Testing >> Brake System >> Component Tests >> Accumulator, Hydro-Boost® Only

Accumulator, Hydro-Boost® Only

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start and run the engine.
  2. Stop the engine.
  3. Apply the brakes. The accumulator in the Hydro-Boost® power brake booster should retain enough pressure for at least two power assisted brake operations. If no power assist is felt, replace the Hydro-Boost® power brake booster and retest the system.
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