Continental, Mark IV, Mercury, T-Bird Vacuum Release Parking Brake (1973)

Visually check operation of brake linkage as pedal is depressed. Then, Check operation of brake linkage when manual release lever is activated. During the following check, ensure a minimum of 10 in. vac. is available at all points where vacuum is applied.

CAUTION: Under no circumstances should air pressure be applied to vacuum system as diaphragm in vacuum motor may be damaged.

Perform check with engine at idle. Place transmission in "N" and depress parking brake lever. Shift transmission to "D" and observe that lever moves upward and parking brake releases. If it does not release, check for proper vacuum in system. Replace components, as necessary.