Ford YL8Z-2128-BA
Wheel Cylinder Overhaul Kit

Always start servicing or repairing a wheel cylinder by taking off the rear wheel cylinder from its mount. Filling the brake system or cleaning assemblies with denatured alcohol can lead to rubber component failure therefore their use must be strictly avoided. Protect the brake hydraulic system from contact with any petroleum products or mineral oil because these substances deteriorate natural rubber seals. Flushing the system with new brake fluid together with replacing all rubber seals and flex hoses becomes essential when contamination occurs. High Performance DOT 3 Motor Vehicle Brake Fluid C6AZ-19542-AB and equivalent brands under Ford specification ESA-M6C25-A, DOT 3 meets the requirements. The wheel cylinder requires disassembly through removal of the bleeder screw cap and bleeder screw as well as dust boots and pistons and piston seals and spring. Examine the rear wheel cylinder bore for wear damage since any unwanted conditions require using a new wheel cylinder. During the assembly process use brand new piston seals and dust boots while feeding the bore with fresh brake fluid. You can finish the assembly by performing the reverse steps of disassembly.

Beginning the wheel cylinder service requires first taking out the brake shoes. When fitting the brake line disconnect the nut but re-tighten it to 15 Nm (11 ft. lbs.) for reinstall. The wheel cylinder removal process requires removing its two bolts before extracting the wheel cylinder component then torquing the bolts to 12 Nm (9 ft. lbs.) during reinstallation. When the installation completes follow the removal process backward to bleed the brake hydraulic system. The use of DOT 3 motor vehicle brake fluid alone represents the safest approach because alternative types will permanently harm brake components and make brakes stop working which increases the risk of injuries to vehicle operators. Handle brake fluid carefully because it contains polyglycol ethers and polyglycols which represent potential health risks to human bodies even though skin irritation can happen and requires medical attention. Brake fluid produced through braking causes immediate damage to painted and plastic vehicle components and owners should therefore wash off all fluid spills right away with water.

Begin wheel cylinder repair-work by removing the rear wheel cylinder and the bleeder screw cap then remove the bleeder screw before setting the reinstalled screw to 8 Nm (71 inch lbs.). First separate the two dust boots before removing the two pistons which will be accompanied by their associated piston seals. Apply clean brake fluid for lubrication on the new piston seals before assembly. Check the wheel cylinder bore for wear and corrosion or pitting after removing the spring because advanced conditions demand a new wheel cylinder installation. Recovery of the design involves following the reversal of previous disassembly procedures. Using DOT 3 fluid approved for motor vehicles stands as the only safe brake fluid since alternative fluids damage brakes irreparably to a point where their operation becomes impossible thus putting users at risk for injury. When working with brake fluid people should exercise caution because it contains polyglycol ethers and polyglycols that can be dangerous to the body; containing your eyes and washing your hands completely after use and looking for medical care if irritation becomes problematic. Any brake fluid spills must be cleaned quickly with water because they damage painted and plastic materials.

Begin by removing the rear wheel cylinder.

Begin by removing the rear brake drum.

Only approved DOT 3 motor vehicle brake fluid.

Utilize the Brake/Clutch/Service Vacuum.

The bleeder screw should be tightened to 8 Nm (71 inch lbs.) upon reinstallation.

Brake fluid can harm painted and plastic surfaces; if spilled, it should be washed off immediately with water.