OEM Dodge Durango Wheel Cylinder

Dodge Durango Wheel Cylinder Parts and Q&A

• Wheel Cylinder
  4088899
  Q: How to Service and Repair a Wheel Cylinder on Dodge Durango?

  A:

  Its best to start by removing the wheel and tire assembly then take out the Brake Drum to repair and service the wheel cylinder. Remove the line from the wheel cylinder brake, then remove the springs and move the shoes aside from their contact with the cylinder rods. After that, take out the cylinder attaching bolts and lift the cylinder off the support plate. Remove the push rods and boots, push the Pistons and cups through the cylinder and expander out of the silencer before you remove the bleed screw. Since you don't want lint left on the cylinder or pistons, use clean fluid or a brake cleaner and dry the parts with a blast of compressed air. Seeing some light and dark areas of discoloration in the bore is normal and it won't harm operation, but if the bore is pitted, scored or heavily corroded, the cylinder must be changed. A little crocus cloth can be used to clean the bore. Make sure the pistons are smooth and clean from scratches or marks and change those that are damaged. Throw out the piston cups and the spring and expander since they don't last, but keep the original dust boots if they're still intact. When assembling, the wheel cylinder bore, pistons, piston cups and spring and expander should be treated with clean brake fluid. The first movable cup goes into the cylinder, sitting within the triangular space formed by the lips of the first piston. After that, set up the spring and expander, then both the remaining piston cup and piston. Place the boots over both ends of the cylinder, put in the push rods and install the cylinder bleed screw afterward. When installing the elastomeric bushing, apply a sealant around the mounting surface, then bolt the cylinder in place and tighten all the bolts to 20 Nm (15 ft. lbs.). Link the Brake Line to the cylinder, assemble the brake return spring, attach the brake drum next, add the wheel and tire and bleed the base brake system last.
• Wheel Cylinder
  4088898
  Q: How to Maintain and Fix a Wheel Cylinder on Dodge Durango?

  A:

  When servicing or repairing a wheel cylinder, begin with the push rods and boots, then push the Pistons, cups and spring and expander out, then remove the bleed screw. Lubricate each wheel cylinder bore, piston, piston cup and spring and expander with clean brake fluid before assembly. Set in the first piston and the first cup so that the piston cup's lip is pointing toward the spring and expander, resting its flat side against the piston. Following that, place the spring and expander and then install the remaining piston cup and piston. After that, set the boots at each cylinder end, push the rods through and tighten the bleed screw once more.