PUMP GP-HYD 10R5277 - Caterpillar

This machine is equipped with spring applied, hydraulic oil pressure released brakes. If the engine or power train hydraulic system are inoperable, the brakes are applied and the machine cannot be moved unless a brake release pump is used.These towing instructions are for moving a disabled machine a short distance, only a few meters (feet) at low speed, no faster than 2 km/h (1.2 mph), to a convenient location for repair. These instructions are for emergencies only. Always haul the machine if long distance moving is required.This machine can be towed by removing the axle shafts from the final drives, but the machine brakes are inoperable and the machine is free to roll. See the Service Manual or contact your Caterpillar dealer for axle shaft removal.Shielding must be provided on the towing machine, to protect the operator if the tow line or bar should break.Do not allow an operator on the machine being towed, unless the operator can control steering and/or braking.Before towing, make sure the tow line or bar is in good condition and has enough strength for the towing situation involved. Use a towing line or bar with a strength of at least 1.5 times the gross weight of the towing machine, for a disabled machine stuck in mud or when towing on a grade.When towing, attach the tow line only to the tow eyes on the frame, if equipped.Do not use a chain for pulling. A chain link can break causing possible personal injury. Use a wire rope cable with loop or ring ends. Use an observer in a safe position to stop the pulling procedure if the cable starts to break or unravel. Stop pulling whenever the pulling machine moves without moving the towed machine.Keep the tow line angle to a minimum. Do not exceed a 30 degree angle from the straight ahead position.Quick machine movement could overload the tow line or bar and cause it break. Gradual and smooth machine movement works better.Normally, the towing machine should be as large as the disabled machine. Satisfy yourself that the towing machine has enough brake capacity, weight, and power, to control both machines for the grade and distance involved.To provide sufficient control and braking when moving a disabled machine downhill, a larger towing machine or additional machines connected to the rear could be required. This prevents it from rolling uncontrolled.The different situation requirements cannot be given, as minimal towing machine capacity is required on smooth level surfaces to maximum on inclines or poor surface conditions.To move the machine when the engine is not operable, a provision has been made to attach a brake release pump.The pressure hose from the pump connects to the brake valve. The pump takes oil from the sump of the brake release pump and pressurizes the brake valve to release the brake. This machine is free to roll and has no braking ability when both tracks have been separated. Towing Capacities are:D6H Series II Standard Machine (Power Shift) - 124.5 kN