F 250 4WD Super Duty V8-6.4L DSL Turbo (2008)
Hydraulic Fluid Accumulator: Testing and Inspection
Accumulator - Hydro-Boost(R)
1. Start the engine and turn the steering wheel to the left and right stops 1 time.
2. Stop the engine.
3. Apply the brakes. The accumulator in the Hydro-Boost(R) power brake booster should retain enough pressure for at least 2 power assisted brake
operations.
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If no power assist is felt, install a new Hydro-Boost(R) power brake booster.
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If power assist is felt, the accumulator is operating correctly at this time.
