D11T Track-Type Tractor Machine Systems Ladder Hinge - Assemble Caterpillar

Assembly Procedure

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Illustration 1	g01976017

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Illustration 2	g01976015

1. Reduce the temperature of bearing cup (19) and bearing cup (24) to a maximum of −55° C (−67° F).

2. Use a suitable press to install bearing cup (19) into coupling housing (8) and bearing cup (24) into the gear housing.
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   Illustration 3	g01974555

3. Press bearing cups (13) into caps (9). Press lip seals (12) into caps (9).
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   Illustration 4	g01976013

4. Install pin (23) into coupling (21). Ensure that the ends of pin (23) are flush with the outside diameter of coupling (21).
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   Illustration 5	g01977499

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   Illustration 6	g01977500

5. Raise the temperature of bearing cones (22) to a maximum of 150° C (302° F). Install bearing cones (22) onto shaft (20). Ensure that bearing cones (22) have been pressed firmly against the shoulders of shaft (20).
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   Illustration 7	g01977502

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   Illustration 8	g01992254

6. Install shaft (20) into the gear housing. Make sure that the splined end of shaft (20) protrudes from the gear housing. Do not install the O-ring seal at this time.
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   Illustration 9	g01992555

7. Use Tooling (A) to install coupling housing (8) and shim pack (17) over the end of shaft (20). Adjust the thickness of shims (17) so that there is no gap between shims (17), the gear housing, and coupling housing (8). Tighten Tooling (A).
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   Illustration 10	g01977503

8. Rotate shaft (20) by at least 5 full rotations in order to ensure that the bearing cones are fully seated in the bearing cups.

9. Measure the end play of shaft (20). Add or remove shims (17) in order to achieve an end play of 0.0254 to 0.1270 mm (0.001 to 0.005 inch). Ensure that shaft (20) spins freely.
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   Illustration 11	g01974633

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   Illustration 12	g01974654

10. Install gear (16) through the large opening in the gear housing. Install shaft (14) through gear (16). Install thrust bearings (15) onto each end of shaft (14).
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    Illustration 13	g01974554

11. Install O-ring seals (11) onto caps (9).
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    Illustration 14	g01956024

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    Illustration 15	g01979874

12. Apply a thin coat of oil to the outside diameters of caps (9). Position caps (9) over shaft (14) and onto both sides of the gear housing. Install shims (10) between caps (9) and the gear housing.

13. Tighten the bolts onto one of caps (9). Do not overtighten the bolts. Install the bolts onto the remaining cap (9).

14. Use a dial indicator to measure the end play of shaft (14). Adjust the end play by adding or removing the same number of shims (10) from each side. Establish the end play between 0.05 to 0.15 mm (0.002 to 0.006 inch).
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    Illustration 16	g01956020

15. Remove coupling housing (8) from the gear housing. Install O-ring seal (18) onto coupling housing (8). Discard Tooling (A).
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    Illustration 17	g01979961

16. Press coupling (21) onto shaft (20).
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    Illustration 18	g01956019

17. Install coupling housing (8), the gasket, and hydraulic motor (7).
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    Illustration 19	g01956018

18. Install lip seals (6) onto couplings (4).
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    Illustration 20	g01956017

19. Install plugs (5) and the O-ring seals onto couplings (4). Install couplings (4) onto both sides of the gear housing. Make sure that the splines of the shaft are engaged with the splines on couplings (4).
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    Illustration 21	g01976493

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    Illustration 22	g01956014

20. Install plate (2) and the gasket onto the gear housing. Do not install plug (3) into plate (2) at this time.

21. Install plug (1) and the O-ring seal into the gear housing. Position the gear housing into the orientation of final installation onto the machine. Fill the oil into the gear housing through the hole in plate (2). Fill the oil into the gear housing until the oil is at the same level as the hole in plate (2). Install plug (3) and the O-ring seal into plate (2).

End By:

1. Install the hinge assembly. Refer to Disassembly and Assembly, "Ladder Hinge - Install".