IMPELLER-CONVERTER 6T0484 - Caterpillar

Before any hydraulic lines are disconnected from the quick drop check valve, release the pressure in the hydraulic system. Start the engine and move the ejector forward all the way. Lower the bowl all the way. Stop the engine and move all hydraulic control levers. Loosen the cap on the hydraulic tank slowly.
1. Put identification on the four hydraulic hoses that are connected to the quick drop check valve for correct installation.2. Disconnect four hydraulic hoses (1), (3), (4) and (6) from the valve.3. Disconnect tube assembly (5) from the valve.4. Remove the two bolts that hold the valve in position. Remove quick drop check valve (2). The following steps are for installing the quick drop check valve.5. Put quick drop check valve (2) in position on the bowl lift cylinder. Install the two bolts that hold it.6. Connect hydraulic hoses (1), (3), (4) and (6) to the valve. Make sure the hoses are in the correct position. Connect tube assembly (5) to the valve.Disassemble And Assemble Quick Drop Check Valves
Start By:a. remove quick drop check valve 1. Remove O-ring seal (5) from the valve body. Check the condition of the seal. If the seal has damage, use a new part for replacement.2. Remove hose fitting (1) and plugs (3), (4) and (2) from the valve body. 3. Remove spring (6) and vent valve (7) from the valve body.4. Remove spring (9) and quick drop valve (8) from the valve body.5. Remove spring (11) and check valve (10) from the valve body. The following steps are for the assembly of quick drop check valves.6. Make sure all the parts of the quick drop check valve are clean and free of dirt and foreign material. Put clean oil on all the parts.7. Install check valve (10), spring (11) and plug (4) in the valve body. Install vent valve (7), spring (6) and plug (3) in the valve body.8. Install quick drop valve (8), spring (9) and plug (2). Install fitting (1) and O-ring seal (5).End By:a. install quick drop check valve