TRAILER EMERGENCY CONTROL VALVE
This task covers:
Wrench, open-end, 7/16-inch
Wrench, open-end, 9/16-inch
Wrench, open-end, 15/16-inch
Tags, marking (item 29, appendix C)
Drain air from system before removing lines or fittings to avoid personnel injury from compressed air.
Be careful of wires and other components when working behind the dash panel to avoid equipment
Tag lines before removal to aid in installation.