ParkAvenue 1997-1999

Pressure Bleeding


Specific to:

Buick LeSabre 1986-1999

Buick Park Avenue 1996-1999

Oldsmobile 88 1992-1999

Oldsmobile Delta 88 1986-1988

Oldsmobile LSS 1996-1999

Pontiac Bonneville 1987-1999

The pressure bleeding equipment you use MUST be of the diaphragm type. It must have a rubber diaphragm between the air supply and the brake fluid to prevent air, moisture, oil and all other contaminants from entering the system.

  1. Fill the master cylinder reservoir to the full mark with the proper type of brake fluid from a fresh, sealed container.
  3. Install bleeder adapter tool J 29567, J 35589 or equivalent, to the master cylinder. The proper adapter must be installed on the master cylinder to avoid damaging the reservoir.

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Fig. Pressure bleeding adapter used on 1987-90 vehicles

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Fig. Later model vehicles use a different type of pressure bleeding adapter

  1. Charge the bleeder ball to 7-25 psi (140-172 kPa).
  3. Connect the line/hose to the adapter, then open the line valve. The bleeder adapter has a bleed valve on top of the adapter to help eliminate air from the adapter.
  5. Raise and safely support the vehicle.
  7. Use one of the following two bleeding sequences, depending upon the year of your vehicle:
    1. 1987-90 vehicles: right rear, left front, left rear, then right front.
    3. 1991-99 vehicles: right rear, left rear, right front, then left front.

  9. Remove the bleeder valve cap, and place a proper size box end wrench, or suitable bleeder wrench, over the bleeder valve.
  11. Attach a transparent bleeder hose to the bleeder valve, and submerge the other end of the of the hose in a clean container partially filled with clean brake fluid.
  13. Open the bleeder valve 1 / 2 to 3 / 4 of a turn, then allow the fluid to flow until no air is seen in the fluid.
  15. Tighten the wheel cylinder bleeder valve to 88 inch lbs. (10 Nm) or the caliper bleeder valve to 115 inch lbs. (13 Nm).
  17. Repeat the bleeding steps until all of the calipers/cylinders have been bled. Then, install the bleeder valve caps.
  19. Carefully lower the vehicle. Check the brake pedal for sponginess. If the pedal is spongy, repeat the entire bleeding procedure.
  21. Remove the bleeder ball and adapter.
  23. Fill the master cylinder reservoir to the full mark.
  25. For 1994-99 vehicles, use a Tech 1® or equivalent scan tool to pressure bleed the brake system, using the "Auto Bleed" sequence. Then, repeat the wheel cylinder and caliper bleeding sequence.