TOOL-RETRIEVER 4906503 - Caterpillar

Release the pressure from the hydraulic system before any liners are removed or disconnected.
1. Remove hydraulic tank filler cap (2) slowly to release any pressure in the hydraulic tank (1). 2. Loosen bolt (3). 3. Remove cover (4) and element assembly (5) from the hydraulic tank. 4. Remove spiral lockring (6). Remove spacer (7) and six springs (8) from the cover. 5. Remove spiral lockring (10). Remove bolt (3) from the cover. Remove the O-ring seal from the bolt.6. Remove O-ring seal (9).7. Do Steps 2 through 6 for the other filter.Install Hydraulic Oil Filters
1. Install O-ring seal (1) on the bolt.2. Install bolt (2) in the cover. Install the spiral lockring that holds it. 3. Install O-ring seal (6) on the cover.4. Install six springs (5). Install the springs in pairs with the outside diameters in contact with each other.5. Install spacer (4) and spiral lockring (3) on the cover. 5. Install element assembly (8) and cover (7) on the hydraulic tank.7. Do Steps 1 through 6 for the other filter.8. Put the right side platform in the "CLOSED" position.