Cummins: Complete brake repairs beat partial fixes before CVSA Brake Safety Week
Cummins says fleets should repair the entire brake system — not just the part that looks worn — to stay safe and avoid repeat downtime during CVSA Brake Safety Week.
- 7
- 3 (U.S., Canada, Mexico)
What Happened
Cummins says commercial vehicle brake systems work as a complete system, not as individual parts. In air disc brake systems, brake pads, rotors and calipers generate friction to slow the vehicle. In drum brake systems, brake shoes, drums, S-camshafts, slack adjusters and related hardware create and control braking force. When one component is worn enough to replace, the surrounding parts deserve a closer look, because replacing only the worn part may not restore the brake system to expected performance.
“At Cummins Inc., we approach brakes as a complete system because that is how they work on the vehicle.”
- Tapered pad wear on air disc brakes, pointing to caliper or slide pin issues
- Uneven shoe wear on drum brakes, signaling worn hardware, poor adjustment, S-cam wear or drum condition
- Vehicle pulls during braking; rotor shows blue discoloration from excessive heat; drum is scored
- Repeated noise, vibration or a brake that returns slowly after application
- Grease, moisture or debris contaminating friction material
- Repeat repairs on the same wheel end
- Replaces the visibly worn part only; may leave the cause of wear and lead to repeat shop visits, uneven braking, faster
- Inspects the full wheel end and repairs what is needed to restore reliable braking; helps new parts reach expected servi
Complete repairs also help replacement parts last longer because new friction material has a better chance of reaching its expected service life when surrounding components are in good condition. Pads depend on retainers, springs, bushings and calipers that move properly; shoes depend on drums, rollers, pins, springs, S-cams and slack adjusters that support consistent contact. For fleets, the payoff is reduced repeat work, improved uptime and less time chasing the same brake issue, ultimately reducing total cost of ownership. With inspectors focusing on drums and rotors during this year's Brake Safety Week, Cummins says it is an ideal time to evaluate the entire brake system and visit MeritorPartsXpress.com for more information on complete brake jobs.
Why this matters
Partial brake repairs can hide the cause of wear and lead to repeat shop visits, uneven braking, and longer stopping distances. Complete repairs help replacement parts last longer, reduce downtime, and lower total cost of ownership for fleets — and they matter more as inspectors target drums and rotors during CVSA Brake Safety Week.
Terms in This Story
- CVSA
- Commercial Vehicle Safety Alliance, which coordinates commercial vehicle inspections in North America.
- Air disc brake
- A brake system using a disc and caliper to create friction, common on heavy trucks.
- Drum brake
- A brake system using shoes pressing against a rotating drum.
- Slack adjuster
- A component that automatically maintains the correct clearance between brake shoes and drum.
Summarised from the linked release; details can be imperfect — always verify against the original source.