Meritor R4133379 is a hydraulic brake wheel cylinder. In a hydraulic drum brake, it takes the pressure sent from the brake pedal and turns it into outward push on the brake shoes, pressing the lining against the drum. When one starts to leak, brake fluid tends to turn up on the drum's inner surface or on the plate behind the shoes, and the pedal can go soft. A torn dust boot can let fluid weep out with little visible dripping. A genuine Meritor part from Pro Gear and Transmission. Call us to confirm proper fit for your brake.
Features
Hydraulic brake wheel cylinder
Genuine Meritor part
Pushes the brake shoes out against the drum
A leak tends to show as fluid on the drum surface or the plate behind the shoes
