Start the engine. Apply the service brake. Unlock the
transmission control lever. Move it to the reverse
The back-up alarm, at the rear of the scraper, should
Low Air Pressure Warning Horn
Start the engine. Allow the air pressure to reach the
normal range on the gauge.
Stop the engine.
Leave the disconnect switch on. Pump the service
brake slowly. When the air pressure drops to 60 psi (415
kPa), the electric warning horn should sound.
Make any necessary repairs before operating the