OPERATION 3.2 CONSTRUCTION OF THE SHOVEL Engine Oil Management System The engine oil management system of each engine combines the automatic engine oil supply system "Reserve" and the oil burning system "Centinel" in connection with the "Eliminator" oil filtra- tion system. Reserve System Oil Flow Schematic, illust. Z 22452A. Front engine -2- shown.
Rear engine -1- is connected to the reserve tank in the LH side member of the main frame (3) Oil filters for the engine oil reserve system (4) Suction line from reserve tank (5) Suction line to pumping unit (6) Supply line from pumping unit to crankcase (7) Withdrawal oil line from engine oil pan to pump (8) Ventilation line for reserve tank (11) Oil feed-back line to reserve tank (12) Pumping unit, located in the cross member opposite of the oil filters (3). The pump unit works automatically as soon as the engine speed is above 300 RPM. The pump unit consists of a pumping element for feeding oil from tank (13) into the engine oil pan.
The second pumping element with- draws oil from the engine oil pan and feeds it back into the reserve tank when the oil level in the oil pan exceeds the maximum running oil level. The combined operation of the pumping elements maintains an optimal oil level in the engine oil pan. Oil drawn off by the Centinel burn system is also replaced through the supply system "Reserve". (13) Reserve oil tank. The reserve oil tank for the rear engine -1- is an inte- grated part of the LH main frame side member. The reserve oil tank for the front engine -2- is an integrated part of the RH main frame side member.
(14) Drain plug (15) Machinery house frame cross member (16) RH side member of main frame (17) Oil level sight gauge (18) Connector for refilling line from swing down service arm 65