How to Adjust the Parking Brake for Rear Wheels?
2 Answers
First, mark a reference line on both the brake shaft and the fixed outer disc of the brake shaft. The reference line on the brake shaft will be offset from the one on the fixed outer disc. Then, adjust the brake screws based on the same direction the brake shaft rotates when the left and right brake pedals are depressed.
Adjusting the parking brake on the rear wheels is something I've gained years of experience with while working in auto repair shops. The first step is to park the vehicle on level ground, turn off the engine, shift to neutral, and firmly engage the parking brake for safety—don't forget wheel chocks to prevent rolling. Locate the adjustment arm on the rear brake drum—usually near the S-cam—and use a wrench to turn the adjustment nut or screw, aiming for a gap of about 5 to 10 millimeters. Too loose, and braking performance suffers; too tight, and it risks overheating and locking up. Test as you go: gently push the brake arm to check if it returns smoothly. After adjustment, it's crucial to road-test the braking force by pressing the pedal to ensure even braking. I've seen many vehicles involved in accidents due to inadequate braking from lack of timely adjustment, especially heavy-duty trucks with high loads and rapid wear. All you need are a standard wrench and a feeler gauge. Doing it yourself saves money but carries risks—if you're not familiar, it's best left to professionals. The air system is complex, and regular checks can prevent major issues.
