Hydro-Boost Bleeding

NOTE: The power steering fluid level in the reservoir will rise and fall as the accumulator is charged and discharged. Fill to the MAX line when accumulator is discharged.

1. Deplete fluid in hydro-boost accumulator by depressing the brake pedal ten times with engine OFF.
2. Using Vacuum Pump D83L-7059-A, or equivalent, extract air from power steering fluid by applying 81-98 kPa (24-29 in Hg) vacuum to power steering reservoir for three minutes.
3. Loosen bleeder screw located on top of booster housing between dash panel and accumulator. Using vacuum pump, extract air from booster cavity. Tighten bleeder screw, then disconnect vacuum.
4. Add Mercon(r) or equivalent ATF to power steering reservoir to bring level to the FULL mark.

NOTE: The vehicle may be raised on a hoist to reduce steering wheel turning effort.

5. With engine OFF, disconnect vacuum, and turn steering wheel lock-to-lock twice, then return to center position.
6. Using Vacuum Pump D83L-7059-A, or equivalent, extract air from power steering fluid by applying 81-98 kPa (24-29 in Hg) vacuum to power steering reservoir.
7. Start engine and turn steering wheel lock-to-lock.
8. Deplete fluid in hydro-boost accumulator by depressing brake pedal ten times with the engine OFF.
9. Loosen bleeder screw located on top of booster housing between dash panel and accumulator. Using vacuum pump, extract air from booster cavity. Tighten bleeder screw, then disconnect vacuum.
10. Start engine, turn the steering wheel, and check the fluid level in the power steering pump reservoir. Install cap over bleed screw.