PLATE 5088082 - Caterpillar

Powerpack Assembly
The powerpack assembly consists of the engine, the pump drive gearbox and the hydraulic pumps.Power for the machine is supplied by a diesel engine coupled to a pump drive gearbox that drives three hydraulic pumps. The auxiliary pump provides hydraulic oil at a constant pressure to the hydraulic cylinders used for steering and elevation adjustment. The wheel drive pump and the cutter drive pump drive the wheel motors and the cutter motor, respectively.The engine is protected against dust and other foreign material by a dry-type induction air cleaner which has a dust collector cap and a main filter element. The dust collector cap protects the inlet against rain, snow and large foreign material such as straw, twigs and leaves.Any particles not removed by the cap are trapped by the main filter element. A service indicator shows when the element requires servicing. NEVER OPERATE THE ENGINE WITHOUT THE ELEMENT IN PLACE IN THE AIR CLEANER. An automatic shutdown system is installed on the engine to protect it against extensive damage from a malfunction in the cooling or lubrication system. The engine will automatically shut down anytime one of the following occurs:1. Low oil pressure.2. High coolant temperature.3. Low cooling system pressure.4. High hydraulic oil temperature.Shutdown because of low pressure in the cooling system is necessary because the coolant temperature sensor must be in contact with the coolant in order to shut the engine down. It would, therefore, be possible to lose all the coolant due to a blown hose and not have the engine automatically shut down if just a coolant temperature sensor were installed. A burst hose will relieve all the pressure in the cooling system and the pressure sensor will then shut the engine down.Automatic shutdown will not occur if overheating is caused by an extremely low coolant level with the cooling system still pressurized, normally only the result of poor maintenance. The temperature sensor will not shut the engine down because it will not be in contact with the coolant, and the pressure sensor will not be activated because the pressure will be as high or higher than normal. Even with an automatic shutdown system, it is very important to check the coolant level regularly. A TEMPERATURE SENSOR INSTALLED IN THE CUTTER DRIVE PUMP CASE DRAIN SYSTEM WILL AUTOMATICALLY SHUT THE ENGINE DOWN ANYTIME THE HYDRAULIC OIL REACHES 220-225°F.Controls And Instruments
The controls and instruments for machine operation are located in front of and to the right of the operator. See Section 2 for detailed descriptions of the controls and instruments.Hydraulic Oil Tank
The 40 gallon hydraulic oil tank is located just behind the right front leg barrel. In the upper forward portion of the tank is a 17 gallon replenishing tank that stores hydraulic oil until it is needed to replenish the hydraulic oil tank level. The hydraulic oil is transferred from the replenishing tank to the main tank by using the replenishing hand pump that is mounted on the main tank. When the hydraulic oil