Normal Operation

A ratcheting mechanism in the parking brake control keeps the parking brake applied until the release handle is pulled. When the release handle is pulled, the ratcheting mechanism in the parking brake control is released and the return springs in the parking brake shoes, and on the parking brake cables, return the system to the released position.

This pinpoint test is intended to diagnose the following:

• Front parking brake cable and conduit
• Intermediate parking brake cable and conduit
• Rear parking brake cable and conduit
• Parking brake control
• Parking brake control release handle
• Parking brake shoes and hardware