SEAL 5P7147 - Caterpillar

Start By:a. remove blade lift cylinders 1. Attach lifting slings and a hoist to the blade lift arm. Remove bolt (1) from plate (2). Remove plate (2) from the frame and the pin.2. Remove three bolts (3), the washers and the nuts from the arm assembly. Remove lock (4) from the frame and the pin. 3. Remove pin (5) that holds the top of the lift arm to machine frame (6). 4. Loosen bolt (7) and remove lock (8) from the blade lift arm. Remove pin (9) from the blade lift arm and center shift lock plate. Remove the blade lift arm from the machine. The weight of the blade lift arm is 97 Kg (214 lb). 5. Remove two bolts (10), the washers, retainer (11) and shims (13) from yoke assembly (12). Remove seal (14) from retainer (11). 6. Move yoke assembly (12) partially out of the arm. Remove three washers (15) from the arm. Put identification marks on washers (15) for installation purposes.7. Using a lifting sling and a hoist, remove yoke assembly (12) from the blade lift arm. The weight of yoke assembly (12) is 20 Kg (44 lb).8. Remove three washers (16) and two seals (17) from yoke assembly (12). Put identification marks on washers (16) for installation purposes. 9. Remove bearing sleeves (18) and (19) from the blade lift arm by putting a saw cut down the length of each bearing. Be careful not to cause damage to the inside surface of the lift arm. 10. Remove four lip seals (20).11. Support Tooling (B) with a lifting sling and a hoist. Use Tooling (B) in order to remove two bearing sleeves (21) from the frame. 12. Remove two lip seals (22) from bar assembly (25).13. Support Tooling (C) with a lifting sling and a hoist. Use Tooling (C) in order to remove bearing sleeve (23) from bar assembly (25). Note that the tooling is on face (24) for installation purposes.14. Repeat Steps 1 through 13 in order to remove the other blade lift arm. The following steps are for the installation of the blade lift arms.15. Be sure that all of the components of the blade lift arms and mating frames and bars are clean prior to installation. During installation of the blade lift arms, check the condition of all seals and lip seals used in the assemblies. If any of the seals are worn or damaged, use new parts for replacement. 16. Use Tooling (B) in order to install bearing sleeves (21) in the frame. Install bearings sleeves (21) until they are even with the lip seal counterbore faces.17. Use