Observe and correct braking effort during the initial period of dynamic brake application. The amount of braking effort obtainable varies with the position of the Dynamic braking handle for various speeds. Maximum braking effort is obtained in the 8th Notch at speeds of about 49 mph. Wheelslip warning may occur while in dynamic braking. This indicates wheels are sliding.
Sand is applied automatically to the wheels of sliding unit.
Reduce the Braking handle position until the warning stops. When necessary, the automatic air brake may be used in conjunction with the dynamic brake. Automatic air brakes will apply on the train but not on the locomotive. The independent air brake must not be used during dynamic braking, to avoid flat spots on the locomotive wheels caused by sliding.