OEM Jeep Liberty Wheel Cylinder

Jeep Liberty Wheel Cylinder Parts and Q&A

• Wheel Cylinder
  5066158AA
  Q: How to Service and Repair a Wheel Cylinder on Jeep Liberty?

  A:

  You should start by loosening and removing the wheel and tire and the Brake Drum before handling the wheel cylinder. Add a brake pedal prop rod and after that, remove the brake line from the wheel cylinder. Take out the return springs and pull the shoes off the cylinder push rods. Afterward, take out the cylinder bolts and lift off the cylinder from the support plate. For fuse blowing, first remove the push rods and their boots, then push the Pistons, cups and spring, press expander out of the cylinder bore and lastly remove the bleed screw. Clean your cylinder and pistons with either clean brake fluid or brake cleaner, not with cleaning agents designed for other uses and dry everything with compressed air. Check the stroke of the cylinder for areas of light and dark coloring, as that is normal and has no effect on its function; only replace the cylinder if the bore is scored, pitted or heavily corroded. You may polish the inside of the barrel with crocus cloth. Inspect the piston surfaces to ensure they are smooth and without scratches, scoring or corrosion and change out those that appear damaged or worn. Replace the old piston cups and spring and expander since they cannot be used again, but your existing dust boots may be kept if they are in fine shape. When assembling, use clean brake fluid to grease the wheel cylinder bore, pistons, piston cups and spring and expander. Placing the first piston in the cylinder, add the first cup afterwards, making sure the lip of the cup faces toward the center and the flat side is on the piston. After that, insert the spring and expander and then put in the additional piston cup and main piston. Put the boots onto the cylinder ends, put the push rods inside the boots and then add the cylinder bleed screw. When installing, secure the mounting bolts for the cylinder at 20 Nm (15 ft. lbs.), attach the new brake hose to the cylinder and fasten it at 14 Nm (124 inch lbs.) and fit the brake shoe springs. Take out the brake pedal prop rod, fit the brake drum and then put the wheel and tire assembly back on, before starting on the base brake bleeding process.