Centric 134.77003 Drum Brake Wheel Cylinder - Rear Right Rearward

Reliable Drum Brake Wheel Cylinder for Precise Braking

The Centric Premium Wheel Cylinders 134.77003 is engineered to provide consistent hydraulic pressure for drum brake systems. Designed with a bolted attachment type and a 4-bolt mounting method, this wheel cylinder ensures secure installation and dependable performance for compatible vehicles.

• Bolted attachment type with 4 mounting bolts for secure fitment
• Dual slotted pistons for balanced hydraulic pressure
• 1.063 inch (1 1/16") bore diameter for precise brake actuation
• Inverted flare inlet fitting with 10mm thread diameter and 1.0 thread pitch
• Right-side position with integrated star wheel and adjuster assembly on one piston
• Lightweight design at approximately 2.7 lbs (1.23 kgs)

Centric Premium Wheel Cylinders Product Line Overview

The Centric Premium Wheel Cylinders line focuses on delivering high-quality brake hydraulics components that meet or exceed OEM specifications. This product line emphasizes durability and precise fitment, making it suitable for professional repairs and maintenance. The 134.77003 wheel cylinder is part of this line, offering reliable performance for drum brake systems requiring a bolted mounting method and dual piston design.

Technical Details and Specifications

This drum brake wheel cylinder features a bore diameter of 1.063 inches (approximately 26.99 mm), which is critical for maintaining proper hydraulic pressure within the brake system. It includes two slotted pistons, one equipped with a star wheel and adjuster assembly to facilitate brake shoe adjustment. The inlet fitting uses an inverted flare design with a 10 mm thread diameter and 1.0 mm thread pitch, ensuring compatibility with standard brake lines. The mounting method involves four bolts, providing a secure and stable attachment to the backing plate. This wheel cylinder is designed for the right side of the vehicle and does not include a bleeder screw.

Common Applications and Problem Resolution

• Replacement for leaking or seized drum brake wheel cylinders
• Restores proper hydraulic pressure to improve braking response
• Addresses uneven brake shoe wear caused by faulty pistons
• Eliminates brake fluid leaks at the wheel cylinder connection
• Corrects brake drag issues due to piston sticking or corrosion

Installation Notes and Tips

Ensure the mounting surface is clean and free of debris before installation. Use the four-bolt mounting method to secure the wheel cylinder firmly in place. Verify the correct orientation for the right-side position and confirm the inverted flare fitting matches the brake line connection. Since this part does not include a bleeder screw, use the vehicle’s existing bleeder for brake system bleeding. Properly adjust the star wheel and adjuster assembly to maintain optimal brake shoe clearance.

Quality Assurance and Warranty

Centric Premium Wheel Cylinders are manufactured to meet stringent quality standards, ensuring reliable performance and durability. While specific warranty details for part number 134.77003 are not provided here, Centric typically offers coverage against manufacturing defects. Refer to the product documentation or manufacturer for exact warranty terms.