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.
- Fill the master cylinder reservoir to the full mark with the proper type of brake fluid from a fresh, sealed container.
- 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.
- Charge the bleeder ball to 7-25 psi (140-172 kPa).
- 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.
- Raise and safely support the vehicle.
Use one of the following two bleeding sequences, depending upon the year of your vehicle:
- 1987-90 vehicles: right rear, left front, left rear, then right front.
- 1991-99 vehicles: right rear, left rear, right front, then left front.
- Remove the bleeder valve cap, and place a proper size box end wrench, or suitable bleeder wrench, over the bleeder valve.
- 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.
- 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.
- Tighten the wheel cylinder bleeder valve to 88 inch lbs. (10 Nm) or the caliper bleeder valve to 115 inch lbs. (13 Nm).
- Repeat the bleeding steps until all of the calipers/cylinders have been bled. Then, install the bleeder valve caps.
- Carefully lower the vehicle. Check the brake pedal for sponginess. If the pedal is spongy, repeat the entire bleeding procedure.
- Remove the bleeder ball and adapter.
- Fill the master cylinder reservoir to the full mark.
- 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.