PUMP GP-GEAR 4962253 - Caterpillar

Downhill Operation
Before you start down a hill or grade, select the proper gear to maintain a proper ground speed. Select a speed that is slow enough for the grade and conditions. In most situations, the proper gear will be the same gear that is required to drive up the grade. The proper gear should allow the machine to maintain the appropriate speed without continuous use of the brakes. Use the right service brake pedal or the engine brake (if equipped) in order to slow the machine until a lower gear can be selected. The engine speed should be in the mid range to maintain proper cooling and lubrication of the machine systems and not over speed the engine. If the machine builds up excessive speed, the engine can over speed. Engine over speed can result in damage to the engine, the hydraulic pump and /or the power train. Using the right service brake pedal continuously to control travel speed of the machine on a grade can cause the brake discs and axle oil to overheat. This use of the service brake can result in significant wear and /or damage to the service brakes and final drives.Note: The left impeller clutch/brake pedal should not be used for downhill braking. Using the left impeller clutch/brake pedal will disengage the engine from the power train. This action will increase the load on the service brakes, increasing the risk of significant wear and/or damage to the service brakes and final drives.