Bright Eyes (1934) An orphaned girl is taken in by a snobbish family at the insistence of their rich, crotchety uncle, even as her devoted aviator godfather fights for custody.
A loose parking brake is another symptom of bad or failing brake shoes. For vehicles equipped with drum brakes, the brake shoes are what hold the vehicle in place when the brake is engaged. If the shoes become worn or dusty, they may not be able to hold the weight of the vehicle without slipping.
Release of the brake shoes effected by energizing the 3 phase thruster which overcome the spring force & the shoe are moved clear off the drum by lever arm linkage system. The mechanism is balanced to give equal shoe clearance.