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Home >> GMC >> 1983 >> Jimmy 5.0 H, Automatic >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc & Drum >> Bleeding >> Hydro-Boost System

Hydro-Boost System

NOTE: If power steering fluid has foamed, due to low fluid level, it will be necessary to park vehicle for approximately 1 hour (reservoir cap loose) so that foam can dissipate.
  1. Fill reservoir with steering fluid and leave undisturbed for at least 2 minutes. Start engine and run momentarily. Add fluid if necessary. Repeat until fluid level remains constant after running engine.
  2. Stop engine. Raise vehicle so front end is off the ground. Turn steering wheel right and left, lightly contacting stops. Add fluid if necessary.
  3. Start engine and depress brake pedal several times while turning steering wheel from stop to stop. Turn engine off and depress brake pedal several times to deplete accumulator pressure. Add fluid if necessary.
  4. If fluid is foamy, or has air in it, let vehicle stand several minutes, repeat procedures. The presence of air in the system will cause fluid level to rise with engine off. Continue to bleed system until all air is expelled.