Hydraulic System Junction Block: Service and Repair
JUNCTION BLOCKREMOVAL
1. Disconnect and isolate the negative battery connection at the left front strut tower.
2. Using a brake pedal holding tool such as shown (Fig. 45), depress brake pedal past its first 1 inch of travel and secure in this position. This will isolate the master cylinder reservoir from the brake hydraulic system, not allowing the brake fluid to drain out of the reservoir.
3. Remove the air cleaner housing.
4. Clean any debris away from the fittings on top of the junction block.
5. Remove the two brake tubes coming from the primary and secondary master cylinder ports at the junction block (Fig. 46).
6. Remove the four chassis brake tubes going to each brake, mounted across the front top of the junction block (Fig. 46).
7. Remove the bolts fastening the junction block mounting bracket to the lower radiator support (Fig. 44).
8. Remove the junction block and bracket from the vehicle.
INSTALLATION
1. Install the junction block with mounting bracket onto the lower radiator support. Install and tighten the mounting bolts to 38 Nm (28 ft. lbs.) torque.
2. Install the four chassis brake tubes (going to each brake) to the junction block (Fig. 46). Tighten the tube fittings to 17 Nm (145 inch lbs.) torque with the aid of a crow foot wrench.
3. Install the two brake tubes coming from the primary and secondary master cylinder ports to the top rear corners of the junction block (Fig. 46). Tighten the tube fittings to 17 Nm (145 inch lbs.) torque with the aid of a crow foot wrench.
4. Install the air cleaner housing. .
5. Remove the brake pedal holding tool.
6. Reconnect the battery negative cable.
7. Bleed the base brake system.