See Figures 1 and 2
REMOVAL & INSTALLATION
Flexible hoses are usually installed between the frame-to-front calipers and the frame-to-rear differential, although they may be used elsewhere on some applications. Commonly, flexible hoses are used at points on the vehicle where suspension travel would damage or break a solid pipe. Hoses should be replaced if they show signs of softening, cracking or other damage.FRONT HOSE
- Raise and safely support the vehicle.
- Remove the wheel and tire assembly from the rotor mounting face. Be careful not to damage or interfere with the wheel cylinder bleeder screw during removal.
- Disconnect the front brake hose from the caliper. Remove the hollow retaining bolt that connects the hose fitting to the caliper. Remove the front brake hose assembly from the caliper, then plug the hose to avoid dirt or contamination from entering the hose.
- Remove the front brake hose from the brake fluid distributor tube, then remove the brake hose clip and the brake hose.
- Connect the front brake hose to the fluid distributor tube, then install the hose clip.
- Remove the plugs, then install the brake hose on the caliper using a new copper washer on each side of the fitting outlet. Insert a retaining bolt through the washers and fittings, then tighten the bolts to 30-40 ft. lbs. (41-54 Nm).
- Bleed the brake system. For details, please refer to the procedure later in this section. Make sure to replace the rubber bleed screw after bleeding the system.
- Install the wheel and tire assembly, then carefully lower the vehicle. Tighten the lug nuts to 85-105 ft. lbs. (115-142 Nm).
See Figure 3
- Raise and safely support the vehicle.
- Remove the wheel and tire assembly.
- Remove the rear wheel brake hose from the rear disc brake caliper assembly.
- Remove the rear wheel brake hose from the rear shock absorber.
- Remove the brake hose clip from the bracket, then remove the rear hose from the brake fluid distribution tube.
- Seat the brake hose into the bracket, then install the hose clip.
- Connect the hose to the brake fluid distributor tube.
- Using new washers, connect the rear wheel brake hose to the rear disc caliper. Tighten the retaining bolt to 30-40 ft. lbs. (41-54 Nm).
- Bleed the brake system, as outlined later in this section.
- Install the wheel and tire assembly, then carefully lower the vehicle and final tighten the lug nuts to 85-105 ft. lbs. (115-142 Nm).
See Figure 4
When replacing steel brake pipes, always use the double-walled steel piping which is designed to withstand high pressure and resist corrosion. Also, it is important to make sure that the pipe is of the same size to assure both a proper fit and proper brake operation.
Whenever possible, try to work with brake lines that are already cut to the length needed. These lines are available at most auto parts stores and have machine made flares, the quality of which is hard to duplicate with most of the available inexpensive flaring kits.
When the brakes are applied, there is a great deal of pressure developed in the hydraulic system. An improperly formed flare can leak with a resultant loss of stopping power. If you have never formed a double-flare, take time to familiarize yourself with the flaring kit; practice forming double-flares on scrap tubing until you are satisfied with the results.
- Obtain the recommended bulk 3 / 16 in. double wall steel brake tubing and the correct standard tube nuts for 3 / 16 in. tubing.
The outside diameter of the line is used to specify size.
- Using a tubing cutter, cut the tubing to the proper length. Clean burrs after cutting. The correct length may be determined by measuring the line to be replaced using a length of cord, then adding 1 / 8 in. (1.2mm) for each flare.
Make sure the fittings are installed and oriented correctly before flaring both ends of the line.
- Place a tube nut onto the tube in the correct direction, then flare the tube with an SAE inverted flare or a metric ISO flare using Brake Line Flaring Tool D81L-2269-A, or equivalent. Carefully follow the instructions included with the tool. Repeat on the opposite end of the tube.
- Bend the replacement tube to match the removed tube using a tubing bender. When the replacement brake tube is installed, maintain adequate clearance to metal edges and moving or vibrating parts.
- Clean the brake tube by flushing with clean brake fluid. Install the brake tube, then tighten the tube nuts to specification using an inch lb. torque wrench.
- Bleed the brake system.