Isolation/Dump Valve Assembly
Fig. 46 ECU & Control Valve Assembly Installation:
1. Disconnect brake lines from control valve, the plug lines and open fittings.
2. Remove bolts (25) securing control valve, Fig. 46, and support valve assembly. Do not allow valve assembly to hang from wiring.
3. Disconnect electrical connectors and remove control valve assembly.
4. Reverse procedure to install, then bleed brakes as needed.