Usage:
1. Start the machine, and position the bucket, stick and rod links as shown.
2. Remove retaining bolt (1) and two nuts (2) from bucket pin (3).
3. Be sure the threaded puller hole in the bucket pin is clean prior to installation of tooling (A). Fasten tooling (A) to bucket pin (3) as shown. Fasten a lifting strap and a hoist to tooling (A) to support it as shown.
4. Slide O-ring seals (5) off of the joints between the bucket and link assembly (4) and onto the flanges on the bucket.
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When bucket pin (3) is removed, link assembly (4) will swing forward and out of the bucket. To prevent possible personal injury, do not stand in front of link assembly (4) when bucket pin (3) is being removed. |
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5. Using tooling (A), remove bucket pin (3) far enough to free link assembly (4) from the bucket. Do not remove bucket pin (3) completely from the bucket. Link assembly (4) will swing forward when the bucket pin is removed.
6. Remove tooling (A) from bucket pin (3). Remove bucket pin (3) by hand. The weight of the bucket pin is 25 kg (55 lb). Remove O-ring seals (5) from the flanges on the bucket.
7. Fasten a hoist to link assembly (4) as shown, and raise it until it is in a horizontal position.
8. Remove two nuts (6) and retaining bolt (7) from pin (8). Remove pin (8) from the link assemblies and the rod end of the bucket cylinder. Remove link assembly (4). The weight of pin (8) is approximately 25 kg (55 lb). The weight of link assembly (4) is 129 kg (285 lb).
9. Fasten a hoist to left hand link assembly (9) as shown. Remove two nuts (10) and retaining bolt (11) from pin (12). Using a hammer and punch, drive pin (12) into the stick until the left hand link assembly is free. Remove the left hand link assembly.
The weight of the left hand link assembly is 26 kg (57 lb). Refasten the hoist to the right hand link assembly. Remove pin (12) from the stick and right hand link assembly. Remove the right hand link assembly. The weight of the right hand link assembly is 23 kg (50 lb). The weight of pin (12) is 18 kg (40 lb).
10. Remove six lip-type seals (13) from link assembly (4).
11. Remove two bearings (14) from the open end of the link assembly with tooling (B). Fasten tooling (B) to the link assembly as shown. Fasten a hoist to tooling (B) to support it, then remove the bearing. Remove the bearing on the other side of the link assembly the same way.
12. Remove the two bearings from the closed end of the link assembly with a chisel or by cutting.
13. Remove two lip-type seals (15) from the stick at the stick-to-bucket linkage pin joint.
14. Remove the two bearings from the stick at the stick-to-bucket linkage pin joint with tooling (C). Fasten tooling (C) to the bearing as shown. Fasten a hoist to tooling (C) to support it, then remove the bearing. Remove the bearing on the other side of the stick the same way.
NOTE: The following steps are for the installation of the bucket linkage group.
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Be sure the stick pin bore, link assembly bores, pins and O-ring seals are thoroughly clean and free of dirt prior to installation of the bucket linkage group. |
15. Install the two bearings in the stick at the stick-to-bucket linkage pin joint. Lower the temperature of the bearings, and install them in the pin bore until each one is 7.5 ± 0.8 mm (0.30 ± 0.03 in) below the outside surface of the stick.
16. Install the two bearings in the closed end of the link assembly (4). Lower the temperature of the bearings, and install them in the pin bore until each one is 7.5 ± 0.8 mm (0.30 ± 0.03 in) below the outside surface of the link assembly.
17. Install the two bearings (14) in the open end of the link assembly (4). Lower the temperature of the bearings, and install them in the pin bore until each one is 7.5 ± 0.8 mm (0.43 ± 0.03 in) below the outside surface of the link assembly.
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To prevent dirt and debris from entering the pin bores in link assembly (4) and the stick, install all lip-type seals (13) and (15) with the sealing lip facing toward the outside of the pin bores. |
18. Using tool (D), install the six lip-type seals (13) in link assembly (4). Install the seals with the sealing lip facing toward the outside of the pin bores and until each one makes contact with the bearing.
19. Using tool (D), install the six lip-type seals (15) in the stick. Install the seals with the sealing lip facing toward the outside of the pin bore and until each one makes contact with the bearing.
20. Put a thin coat of 5P0960 Multipurpose Grease on the bearings and seals in the stick and link assembly.
21. Put a thin coat of 5P0960 Multipurpose Grease on pin (12). Install the right hand link assembly, left hand link assembly (9) and pin (12) as shown. Align the retaining bolt hole in pin (12) with the retaining bolt hole in left hand link assembly (9). Temporarily install retaining bolt (11) and two nuts (10) which hold it.
22. Prior to installing link assembly (4), be sure the grease fitting in the rod end of the bucket cylinder is facing away from the stick.
23. Fasten a hoist to link assembly (4), and put it in position on the rod end of the bucket cylinder and between the right and left hand link assemblies. Put a thin coat of 5P0960 Multipurpose Grease on pin (8). Install the pin to hold the unit together. Align the retaining bolt hole in pin (8) with the retaining bolt hole in the left hand link assembly. Temporarily install retaining bolt (7) and two nuts (6) which hold it.
24. Temporarily install an O-ring seal (5) on each flange of the bucket at the bucket-to-link assembly pin bore.
25. Be sure the threaded puller hole in bucket pin (3) is clean. Put a thin coat of 5P0960 Multipurpose Grease on bucket pin (3). Install tool (E) in the end of the bucket pin (3). Push the link assembly in position in the bucket. Install bucket pin (3) with a hammer. Remove tool (E) from the bucket pin. Put the retaining bolt hole in bucket pin (3) in alignment with the retaining bolt hole in the bucket. Temporarily install retaining bolt (1) and two nuts (2).
26. Slide O-ring seals (5) over the joints between the bucket and link assembly.
27. Rotate pins (8) and (12) until the retaining bolt hole in each pin is in horizontal alignment as shown in the illustration.
28. Tighten retaining nuts (2), (6) and (10) as shown in the illustration. Tighten the outside nut until it is even or 0.5 mm (0.02 in) above the end of the retaining bolt. Tighten the inside nut against the outside nut.
29. Lubricate the bucket pins. See the Operation & Maintenance manual for the correct procedure.