PARKING BRAKE DOES NOT DISENGAGE WHEN PARKING BRAKE SWITCH IS PULLED UP
Brake Control Valve Faulty.
· Remove all jewelry such as rings, dog tags and bracelets. If jewelry contacts
electrical connection a direct short may occur resulting in injury or death, and
damage to equipment.
· Ensure that parking brake is engaged and propel control lever is in neutral
position before turning engine start switch to ON position. If roller accidentally
starts or rolls, injury or death to personnel may occur.
Open left-side door assembly (TM 5-3895-379-10).
Move propel speed switch into high (hare) position.
Turn battery disconnect switch to ON position (TM 5-3895-379-10).
Turn engine start switch to ON position (TM 5-3895-379-10).
Place blade end of screwdriver approximately 1/4 inch (6 mm) from center hex nut on brake
Magnetic force should pull screwdriver to brake solenoid.
If magnetic force pulls screwdriver to brake solenoid, replace brake control valve
If magnetic force does not pull screwdriver to brake solenoid, go to next malfunction.