Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1986K 20 P/U 4WD V8-350 5.7LREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLHYDRAULIC SYSTEMBRAKE CALIPERSERVICE AND REPAIRBENDIX SINGLE PISTON SLIDING CALIPERINSTALLATION
1986 Chevrolet K 20 P/U 4WD V8-350 5.7L
Installation
1986 Chevrolet K 20 P/U 4WD V8-350 5.7LSECTION Installation
For additional information see Installation Notes. Fundamentals and Basics
1. Clean and lubricate sliding surfaces of caliper and the anchor plate with Delco Silicone Lube, P/N 5459912, or equivalent.
2. Install inboard brake pad anti-rattle spring on brake pad rear flange, and ensure looped section of clip is facing away from rotor.
3. Install inboard brake pad in steering knuckle.
4. Install outboard brake pad in caliper. Ensure pad flange is seated fully into outboard arms of caliper. It may be necessary to use a C-clamp to seat the pad.
5. Place caliper assembly over rotor and position in steering knuckle. Ensure dust boot is not torn or improperly positioned by inboard brake pad during caliper installation.
6. Align caliper with steering knuckle abutment surfaces, then insert support key and spring between abutment surfaces at the trailing end of caliper and steering knuckle. With a hammer and brass drift, drive caliper support key and spring into position, then install and torque support key retaining screw to 16.2-24.3 Nm (12-18 ft lb).
7. Refill master cylinder to within one inch of rim. Press brake pedal several times to seat pads.
8. Install front wheels and lower vehicle.
Fig. 6 Exploded View:
1. Clean and lubricate sliding surfaces of caliper and the anchor plate with Delco Silicone Lube, P/N 5459912, or equivalent.
2. Install inboard brake pad anti-rattle spring on brake pad rear flange, and ensure looped section of clip is facing away from rotor.
3. Install inboard brake pad in steering knuckle.
4. Install outboard brake pad in caliper. Ensure pad flange is seated fully into outboard arms of caliper. It may be necessary to use a C-clamp to seat the pad.
5. Place caliper assembly over rotor and position in steering knuckle. Ensure dust boot is not torn or improperly positioned by inboard brake pad during caliper installation.
Installing The Caliper Key:
Brake Caliper:
6. Align caliper with steering knuckle abutment surfaces, then insert support key and spring between abutment surfaces at the trailing end of caliper and steering knuckle. With a hammer and brass drift, drive caliper support key and spring into position, then install and torque support key retaining screw to 16.2-24.3 Nm (12-18 ft lb).
7. Refill master cylinder to within one inch of rim. Press brake pedal several times to seat pads.
8. Install front wheels and lower vehicle.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.