Tech Feature: Disc Brake Caliper Service Fresno CA
Modern disc brake calipers are either floating or fixed designs. To allow the brake pads to align themselves with the brake rotor, most late-model vehicles incorporate a single-piston, floating caliper assembly that moves in relation to the wheel spindle. In contrast, the fixed calipers used in many high-end and high-performance vehicles are firmly attached to the steering knuckle and spindle.
Kragen Auto Parts
(559) 225-1396
4323 N Blackstone Ave
Fresno, CA
Kragen Auto Parts
(559) 271-0658
4425 W Ashlan Ave
Fresno, CA
Kragen Auto Parts
(559) 264-4827
2995 E McKinley Ave
Fresno, CA
Kragen Auto Parts
(559) 486-4763
510 Olive
Fresno, CA
Fresno Chrysler Jeep Inc
(559) 225-5442
Fresno, CA
Mugen Enterprises Inc
(559) 237-1853
155 Van Ness Ave
Fresno, CA
Carquest Auto Parts Store
(559) 222-2421
4378 N Blackstone Ave
Fresno, CA
Brian's Parts Shop
(559) 233-2123
3558 E Butler Ave
Fresno, CA
Carquest of Fresno
(559) 266-6802
3515 E Tulare St
Fresno, CA
Autozone
(559) 229-6515
4031 Marks Ln
Fresno, CA
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Disc brake service has become routine for most import repair shops and, for the most part, offers very few surprises for the service writer and technician alike. Many shops service disc brake calipers by simply replacing them with loaded caliper assemblies, which makes sense in rust-belt areas. In drier climates, calipers can last for many years and may require only routine inspection during a disc brake pad replacement.
Nevertheless, in order to appreciate some of the fine points of disc brake repair, it’s important to review the basic elements of caliper service. In the following text, I’ll use a typical caliper service to illustrate some of the issues involved in disc brake service.
CALIPER DIAGNOSIS
Most disc brake services begin with a routine maintenance inspection or with a customer complaint, such as a brake pull or noise. Many caliper failures result in brake-pull complaints because the caliper piston fails to retract. To allow free rotation of the wheel, a very small air gap must exist between the rotor and brake pad. When the pads on one wheel drag against the rotor, the pad may glaze or the brake assembly temperatures may sufficiently increase to change the coefficient of friction between the driver- and passenger-side disc brake assemblies. A change in the coefficient of friction will obviously cause a brake-pulling complaint.
Last, but not least, a low master cylinder reservoir fluid level might indicate that the brak... |
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