Things You'll Need:
- Tube nut wrench
- Catch pan
- Fresh brake fluid
- Shop rags
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Step 1
Slide the tube nut wrench over the brake line at the proportioning valve and orient the wrench so that it will fit over the tube nut that secures the brake line to the proportioning valve. The proportioning valve is normally located on the passenger's side of the vehicle, but the exact location will vary depending on the model of Chrysler vehicle.
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Step 2
Place a catch pan underneath the brake proportioning valve. Brake fluid will eat through paint, so you will also want to use a rag to help control any brake fluid spray by placing the rag over the brake line to proportioning valve connection.
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Step 3
Have an assistant apply steady and firm pressure on the brake pedal.
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Step 4
Loosen the brake line with the tube nut wrench by turning the tube nut counterclockwise. Check the connection as you do this. You may or may not notice bubbles forming on the threads of the brake line. Make sure your assistant keeps firm pressure on the brake pedal so that air does not get introduced into the brake line. Loosen the brake line just enough so that any trapped air and brake fluid are allowed to escape, but do not remove the brake line. When the brake pedal falls to the floor, retighten the brake line and have your assistant pump the brakes again to build up more pressure in the lines.
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Step 5
Repeat steps 3 & 4 for all outgoing lines connected to the proportioning valve. The outgoing lines are the lines running to each wheel on the vehicle. Periodically check the brake fluid level in the master cylinder on the driver's side of the vehicle (on the firewall, labeled "brake fluid") and refill the master cylinder to the full line as necessary. Don't let the fluid drop below the lowest mark on the reservoir tank or you may introduce air into the brake lines.
