The brake calipers admit rubber brake lines bolted to them.
The 1983 GMC 1500's front brakes are fed fluid nailed down a rubber hose called a brake hose. Over era, this hose can develop into brittle and disjunction. The hoses and chalk up yet been certified to break down internally, though this doesn't happen express regularly. When the brake path becomes brittle, moderate it before it causes any also damage to your braking transaction. Doing the business on a 1983 GMC 1500 is not terribly crucial for most habitation mechanics. It one requires a unusual tools and the support of an assistant.
Instructions
1. Loosen, on the other hand create not remove, the lug nuts from the shove the hose Testament be replaced on. Up thrust the front of the GMC, using the floor jack. Secure it by placing jack stands subservient the frame rails and lowering the Motor lorry until its weight is exclusive on the stands. Linger loosening the lug nuts and pull the turn from the GMC.
2. Place the rubber brake hose connected to the rear of the brake caliper. Pour about 3 inches of DOT 3 brake fluid into the clean container and put the free end of the 1/4-inch rubber hose in the fluid. Make certain the end of the hose stays submerged in the fluid.11.
Pull the hose from the caliper and let it hang over the bleed pan.
4. Hint the hose upward and establish where it connects to the Motor lorry's iron brake lines, approximately 12 inches up the hose. Corner one combination wrench on the aficionado last of the hardened path and one on the stone extreme of the rubber hose. Turn the wrench holding the hose counterclockwise to remove the hose from the line.
5. Many auto parts stores will properly dispose of or recycle the brake fluid.
Press the bolt through the hole at the end of the new hose. Place the second new brass washer on the end of the banjo bolt and hand-tighten the bolt into the rear of the caliper.
7. Tighten the banjo bolt to 18 to 30 foot-pounds, using the torque wrench and a socket.
8. Open the truck's hood and locate the master cylinder reservoir, which is the plastic container on the driver's side of the firewall. Pull the lid off of the reservoir and fill it with fluid. Press the lid back on the reservoir.
9. Locate the bleeder valve on the rear of the brake caliper. It is the small brass valve at the top of the caliper. Press the 2-foot long piece of 1/4-inch hose on the bleeder valve's tip.
10. Compass the extract pan directly below the brake hose.3. Loosen and remove the bolt holding the hose to the rear of the caliper. This bolt is called the banjo bolt.
Have your assistant press and release the brake pedal three to four times, then hold the pedal down. Loosen the bleeder valve, using a combination wrench, while the pedal is held down. Watch as air bubbles come from the hose and into the fluid. Tighten the bleeder valve after the bubbles have stopped coming from the hose.
12. Repeat Step 11 until no bubbles come from the hose when the bleeder valve is opened.
13. Remove the rubber hose from the bleeder valve and pull the drain pan from under the truck.
14. Place the wheel back on the GMC and hand-tighten the lug nuts. Raise the truck from the jack stands, using the floor jack. Remove the jack stands from under the truck and lower the truck to the ground.
15. Tighten the lug nuts to 120 foot-pounds, using the torque wrench and a socket.
16. Open the master cylinder reservoir's lid and check the fluid in the reservoir. It must be between the "Min" and "Max" lines on the reservoir. Add DOT3 brake fluid as needed and press the lid back on the reservoir. Close the GMC's hood.
17.Pour the old brake fluid from the drain pan into the small container and dispose of the fluid properly. Place the new hose on the hard line and tighten it using two combination wrenches--one to turn the hose, and the other to hold the nut on the hard line.6. Place one new brass washer on the banjo bolt (washers are included with the new hose).
