TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
Page 78 of 1176
TM 9-2320-361-24-1 0003 00 0003 00-16 THEORY OF OPERATION (Contd) 0003 00-16 PARKING BRAKE SYSTEM Parking Brake System Operation: The parking brake system consists of a brake drum and an inner and outer brake shoe assembly, mounted on the transfer case. It is manually controlled by a cable and control lever mounted on the cab floor. The major components of the parking brake system are as follows: PARKING BRAKE CONTROL LEVER – Applies parking brake when pulled to raised position. When lowered, parking brake is released. ADJUSTING KNOB – Permits operator to make minor tension adjustment in parking brake cable. PARKING BRAKE CABLE – Links parking brake lever to actuating lever. BRAKEDRUM – Provides surface for brakeshoes to press against when parking brake is applied. ACTUATING LEVER – Forces inner and outer brakeshoes against brakedrum when parking brake control lever is raised. PARKING BRAKE ADJUSTING SCREW – Used to ensure full contact of brakeshoes with brakedrum. BRAKESHOES – Both apply friction to brakedrum when parking brake control lever is raised. ECCENTRIC PIN – Equalizes distance between brakeshoes and brakedrum. H G F E D C B A D E F G H C B A