E 150 V8-4.6L (2007)
Hydraulic Fluid Accumulator: Testing and Inspection
Accumulator
WARNING: Use of other than the approved DOT 3 brake fluid will cause permanent damage to the brake components and will render the
brakes inoperative.
NOTE: If a vehicle with a locked wheel must be moved, loosen the bleeder screw to relieve pressure.
Always check brake fluid level and, if necessary, fill with clean, specified brake fluid.
1. Start and run the engine.
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. If no power assist is felt, install a new Hydro-Boost(R) power brake booster and retest the system.