PLATE AS-SEAL 5101970 - Caterpillar

Changing The Hydraulic Oil
LET THE MACHINE STAND IDLE UNTIL THE HYDRAULIC OIL HAS COOLED. THE OIL AT OPERATING TEMPERATURE CAN CAUSE SERIOUS BURNS. THE HYDRAULIC OIL TANK SHOULD BE COMFORTABLE TO TOUCH BEFORE DRAINING THE OIL.
When changing the hydraulic oil, cleanliness must be kept in mind at all times. Perform the work in a clean area, use clean tools, keep your hands clean and clean the outside of the hydraulic oil tank before starting. 1. Close the two hydraulic oil shutoff valves.2. Thoroughly clean around a hose connection at the rear shutoff valve, disconnect the hose from the valve, and immediately cap or plug the hose.3. Attach a clean hose long enough to reach a suitable container, place the other end of the hose in the container, then open the shutoff valve and allow the oil to drain.4. While the oil is draining, use the replenishing pump to empty the replenishing tank.5. After the oil has drained, disconnect the drain hose from the shutoff valve and connect the original suction hose to the valve.6. Unbolt the replenishing pump from the tank cover and move the pump to a place where it will be out of the way and will not be damaged. 7. Thoroughly clean the tank cover and surrounding area of the tank, remove the bolts from the tank cover and pull the cover from the tank.8. Remove the strainer from the pipe nipple.9. If there is dirt or sediment in the tanks or on the cover, thoroughly clean the tanks and/or cover.
DO NOT ALLOW ANY WATER, SOLVENT OR OTHER CLEANING AGENT TO ENTER ANY FITTINGS OR HOSES AND COMPLETELY REMOVE ANY FROM THE TANKS AND COVER. DO NOT USE RAGS THAT MAY LEAVE LINT OR THREADS IN THE TANK.
10. Wash the strainer in clean non-flammable solvent and blow it dry with clean air or allow it to drain dry. Also clean off the flexible magnets.11. Install the cleaned strainer on the pipe nipple.12. Thoroughly clean the mating surfaces of the tank and cover, coat both surfaces with a liquid sealant such as Permatex, position the gasket and install the cover.13. Install the replenishing pump on the main tank.14. Replace the elements in all the hydraulic oil filters (see pages 5-80 and 5-81.15. Refill the tank with clean hydraulic oil by pumping the oil from the replenishing tank and adding oil to the replenishing tank as needed. Use only hydraulic oil conforming to the specification on page 5-2.16. Open the two hydraulic oil shutoff valves. 17. Loosen the hose at the suction port of each pump until air-free hydraulic oil flows from the connection, then tighten the connection.18. Loosen the outlet connection on the control (auxiliary) system pump, leave the fuel switch at "Off", and crank the Caterpillar 3208 engine (engine B) with the starter until air-free hydraulic oil flows from the connection, then tighten the connection.19. Start the engine and run it at low idle for several minutes. Check for leaks and check the hydraulic oil