vibration. Common methods used to absorb this shock are coiling the brake tubing or using a short length of purchased brake hose. Follow procedures outlined by the vehicle manufacturer or SAE specifications.

3.Connect the upstream line coming from the master cylinder to the fluid inlet port on one end of the actua- tor. Note that the actuator is not directional and does not have a front and rear. Connect the downstream line going to the rear brakes from the side outlet port on the same end of the dual actuator. See Figure 19.

From

Master Cylinder (port not shown)

FIGURE 19

To

Brakes

From

Master Cylinder To

Brakes

4.Repeat steps 1, 2 & 3 to install the front brake lines.

5.Determine the shape and length of a new piece of tubing to connect the power unit and dual actuator.

6.Connect one end of the new tubing to the dual actuator. See Figure 20.

Plug One of

These Ports

From

Power Unit

FIGURE 20

FIGURE 21

7.Connect the other end of the new tubing to the power unit. This connection can be made to either the side or top port. Remove the plastic shipping plug from the top port of the power unit. To install line in the side port use 3/16" hex key wrench to move the steel plug from side port to top port. Install the remaining brass adapter from the fitting package in the selected port prior to connecting the line. See Figure 21.

3 Channel Anti-Lock 691 Brake Lock System

3 Channel Anti-lock Brake System

The 3-channel anti-lock brake system uses both a single and a dual actuator. Follow the plumbing instructions for both the Single 691 Brake Lock System and the Dual 691 Brake Lock System to connect the appropriate lines. To connect the hydraulic line from the power unit to both actuators, either a tee can be added to this line or the plug in the unused port on the pressure switch manifold can be removed to accommodate the connection.

3 Channel Anti-lock Brake System with 691 System

4-Channel Anti-Lock 691 Brake Lock System

4 Channel Anti-lock Brake System

The 4-channel anti-lock brake system uses two dual actuators. Follow the plumbing instructions for the Dual 691 Brake Lock System to connect the appropriate lines. To connect the hydraulic line from the power unit to both actuators, either a tee can be added to this line or the plug in the unused port on the pressure switch manifold can be removed to accommodate the connection.

Dual Brake Systems with 691 System

4 Channel Anti-lock Brake System with 691 System

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