ACDelco
18A74
ACDelco 18A74 Rotor Assembly
EAN: 0707773393017
UPC: 036666662689
Rotors
ACDelco brakes are independantly tested and D3EA certified to meet the industry's highest level of braking performance
Follow original manufacturers' designs for dispersing heat, helping to prolong pad and rotor life and reduce noise and vibration
Quiet - You won't hear much from these high-quality brakes
12-month/12,000-Mile Limited Warranty
ACDelco is an Original Equipment (OE) supplier and has the experience engineering and manufacturing components that achieve the highest quality standards required by vehicle manufacturers
Features and Benefits
Coverage for most vehicles on the road today. D3EA tested and approved. Follow original manufacturers' designs for dispersing heat, helping to prolong pad and rotor life and reduce noise and vibration. Additional ACDelco Professional DuraStop brake parts: shoes, calipers, master cylinders, wheel cylinders, parking brake cables, brake lines and hoses.
Durability - ACDelcProfessional DuraStop Brakes are designed to help resist corrosion and premature wear
Quiet - You won't hear much from these high-quality brakes
Quality Assurance - ACDelcProfessional DuraStop Brakes are the most thoroughly, independently tested brakes on the aftermarket. ACDelcsubmits its brake products through a range of test methods, including D3EA, along with Noise/Vibration/Harshness (NVH) and durability/wear testing. This allows us t deliver the high quality product that an ACDelccustomer expects. No manufacturer tests or audits its replacement brake products to the level of ACDelco. Read about Dual Dynamometer Differential Effectiveness Analysis (D3EA) and SAE J2784.
Warranty - ACDelcProfessional DuraStop Rotors and Drums brake products carry a limited warranty of 12-months/12,000 miles from sale or installation *
*To the original retail purchaser. Parts only; installation not included. See your local retailer or independent service center that offers ACDelcparts for details.
Function & Signs of Wear
Find out more about ACDelcProfessional DuraStop Rotors/Drums and how they fit into the Brakes system with the product facts below.
Brake Rotor:
FUNCTION: A rotating disc that helps slow or stop the vehicle when the brake pads press against its surface (disc brakes).
SIGNS OF WEAR: Brake pedal pulsation (not to be confused with normal ABS operation), squealing or grinding noise, low brake pedal height, vehicle pulls to the left or right when brakes are applied.
Brake Drum:
FUNCTION: A drum attaches to the wheel that slows the rotation of the wheel when the brake shoes contact its surface
SIGNS OF WEAR: Reduced braking force, low brake pedal height, increased stopping distances, squealing or scraping noises, brake pedal pulsation (not to be confused with normal ABS operation)
Did You Know?
When you step on your brake pedal, you command a stopping force 10 times as powerful as the force that puts the car in motion. The brakes system can exert as much as 1,000 pounds (450 kg) of hydraulic pressure on each of the four brakes.
What It Does
The Brake System applies frictional force to the wheels to slow or stop the vehicle.
Service & Maintenance
The following inspections and maintenance procedures can help prevent potential brake problems:
Check brake fluid level at every oil change. Replace fluid according to Owner's Manual recommendations.
Calipers and wheel cylinders should be checked every brake inspection and serviced or replaced as required.
Inspect the brake lines for rust, punctures or visible leaks (you may be able to do this, but consult a qualified technician if necessary)
The following should be conducted by a qualified technician:
- Inspection of the brake hoses for brittleness or cracking
- Inspection of brake lining and pads for wear or contamination by brake fluid or grease
- Inspection of wheel bearings and grease seals
- Parking brake adjustments (as needed)New DuraStop rotors DO NOT need machining.
Before you machine rotors, make sure the lathe is clean, within specs and has sharp tool bits.
After completing the finish cut, sand both sides of the rotor for one minute per side using a sanding block and 130 to 150 grit sandpaper to obtain a non-directional finish.
After sanding, wash the rotor with dish soap and water. DO NOT clean the rotor with brake cleaner/solvent-based product.
Thoroughly clean the calipers, caliper slides and hardware. Remove all dirt, rust and grease.
DuraStop brake tech tips:
Lubricate caliper slides, shims and rubber components.
Use ACDelcsilicone-based lubricant or equivalent before installation. ACDelco lubricant is rated at 2,000F.
DO NOT use a petroleum-based or spray adhesive product:
Lubricate all hardware rubber components and all metal-to-metal contact points.
Give caliper slides and disc pad shims/insulators a thin film of lubricant. This will allow the shim to withstand normal brake pad movement without damage to the shim. Additionally, this helps dampen vibration. Make sure the disc pads are tight in the caliper and torque the caliper to the housing. Check the adjustment of the rear brakes. Adjust if necessary. After cleaning all wheel-hub mating surfaces, install the wheels. Make sure they are torqued to manufacturer's specifications.
Coverage for most vehicles on the road today.
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