2470C, 2570C and 2670C Wheel Feller Bunchers Machine Systems Caterpillar

Assembly Procedure

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Illustration 1	g02848932

1. Use the proper equipment to handle bearing cone (45). Raise the temperature of bearing cone (45). Install bearing cone (45) onto the shaft (40).

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Illustration 2	g02840993

2. Use the proper equipment to handle the bearing cup. Lower the temperature of bearing cup (44) and install the bearing cup in pump body (3) .

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Illustration 3	g02840991

3. Install plugs (43) and the O-ring seals. Tighten plugs (43) to a torque of 60 ± 6 N·m (45 ± 4.40 lb ft).

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Illustration 4	g02840990

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Illustration 5	g02849676

4. Install lip seal (42) and retaining ring (41) .

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Illustration 6	g02840987

5. Install shaft assembly (40) .

6. Use the following steps to determine the proper preload on the bearings of the pump assembly.
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   Illustration 7	g02848945

   1. Use the proper equipment to handle the bearing cup. Lower the temperature of bearing cup (21). Install bearing cup (21) in head assembly (18) .
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   Illustration 8	g02848952

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   Illustration 9	g02848953

   2. Install adjustment shim (24) and bearing cone (22) onto shaft assembly (40) .
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   Illustration 10	g02849010

   3. Position head assembly (18) onto pump body (3) .

   4. Use Tooling (G) to measure the distance between head assembly (18) and pump body (3) .

   5. Take measurements at three equal intervals on the surface between the head and the pump body.

   6. The average of the three dimensions should be between zero and 0.05 mm (0.002 inch).

   7. If necessary, grind shim (24) in order to obtain the correct dimension between head assembly (18) and pump body (45). It may be necessary to replace shim (24) with a new part.
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   Illustration 11	g02837059

   8. Install bolts (17) into the head assembly (18). Tighten bolts (17) to a torque of 51 N·m (38 lb ft).
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   Illustration 12	g02849051

   9. Use Tooling (D), Tooling (E), and Tooling (F) to check end play in shaft assembly (40). If end play exists in the shaft assembly, repeat Step 6 until the correct dimension between the head and the pump housing is reached.
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   Illustration 13	g02837059

   10. Remove bolts (17) and head assembly (18) .
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   Illustration 14	g02848953

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   Illustration 15	g02848952

   11. Remove bearing cone (22) and shim (24) from shaft assembly (40) .

   12. Proceed with the assembly of the fan drive pump.

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Illustration 16	g02840985

7. Install bearings (39) .

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Illustration 17	g02840984

8. Install spring (38) .

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Illustration 18	g02840982

9. Install swashplate (37) .

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Illustration 19	g02849260

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Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

Note: Note that there is a correct connection of the piston rod and the swashplate and spring (38) is properly located under swashplate.

10. Install piston rod (36) .

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Illustration 20	g02840980

11. Install control piston (35) .

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Illustration 21	g02840979

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Illustration 22	g02840978

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Improper assembly of parts that are spring loaded can cause bodily injury. To prevent possible injury, follow the established assembly procedure and wear protective equipment.

Note: There is spring force against retaining ring (31). When retaining ring (31) is not seated properly, the spring force will be released. Installation of the internal components in barrel assembly (29) should be performed in a suitable press. This is done in order to retain spring (34) and retaining ring (31) .

12. Install pins (32), guide (33) and spring (34) in barrel assembly (29) .

13. Use a suitable press and Tooling (A) to compress the spring (34) in barrel assembly (29) .

14. Install retaining ring (31) .

15. Slowly release compression on spring (34). Make sure that the retaining ring (31) is seated properly.

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Illustration 23	g02840976

16. Install retaining ball (30) on barrel assembly (29) .

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Illustration 24	g02840961

17. Install piston assemblies (27) and retainer (28) in barrel assembly (29) .

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Illustration 25	g02849310

18. Wrap pistons assemblies (27) with string but do not tie the string. Hold the string tight and carefully install rotating group (26) in pump body (3). The splines on shaft assembly (40) must engage with splines in rotary group (26) .

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Illustration 26	g02840958

19. Install plug (25) and the O-ring seal. Tighten plug (25) to a torque of 190 N·m (140 lb ft).

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Illustration 27	g00669731

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Illustration 28	g02840957

20. Install shim (24) that was determined in Step 6.

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Illustration 29	g02840916

21. Install bearing cone (22) .

22. Install O-ring seal (23) .

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Illustration 30	g02849153

23. Install O-ring seal (20) and port plate (19) on head assembly (18) .

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Illustration 31	g02837059

24. Install head assembly (18) and bolts (17). Tighten bolts (17) to a torque of 51 N·m (38 lb ft).

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Illustration 32	g02837058

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Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

25. Install spool (12), guide (13), springs (14), O-ring seal (15), and plug (16) in compensator valve (1). Tighten plug (16) to a torque of 21 N·m (186 lb in).

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Illustration 33	g02837057

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Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

26. Install spool (7), guide (8), springs (9), O-ring seal (10), and plug (11) in compensator valve (1). Tighten plug (11) to a torque of 21 N·m (186 lb in).

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Illustration 34	g02837056

27. Install plugs (5), plug (6) and the O-ring seals in compensator valve (1). Tighten plugs (5) to a torque of 23 ± 3 N·m (204 ± 27 lb in).

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Illustration 35	g02837037

28. Install seal (4) on compensator valve (1) .

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Illustration 36	g02837036

29. Install bolts (2) and compensator valve (1) to pump body (3) .

End By: Install the fan drive pump.