307B Excavator Machine Systems Caterpillar

Assembly Procedure

1. Thoroughly clean all parts of the track carrier roller prior to assembly.

   Note: Do not reuse bearings (12) and (13). Use new parts for replacement.

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   Illustration 1	g00547437

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   Illustration 2	g00547439

2. Lower the temperature of bearings (12) and (13). Install one in each end of the track roller with a press. Install each bearing until the bearing is 0.5 ± 0.5 mm (0.02 ± 0.02 inch) below the shaft counterbore in the track carrier roller. The outside bore can be identified by the three threaded holes (H) in the track carrier roller.
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   Illustration 3	g00547440

3. Use a press to install collar (11) on shaft (8). Install collar (11) until dimension (X) is 83 ± 0.2 mm (3.268 ± 0.008 inch).

4. Use the following procedure to determine shaft end play.
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   Illustration 4	g00547444

   Note: Do not install the Duo-Cone seal kit in the track carrier roller or collar (11) at this time.

   1. Install shaft assembly (8) in the track carrier roller without the Duo-Cone seal kit.

   2. Install retainer (7) and socket head bolts (5) and (6) on the end of shaft assembly (8).

   3. Use Tool (C) to measure the end play of shaft assembly (8). The end play of the shaft assembly must be 0.2 mm (0.008 inch) to 0.5 mm (0.020 inch).

   4. Disassemble the track carrier roller, but do not remove collar (11) from shaft (8).

   Note: Refer to Disassembly and Assembly, "Duo-Cone Conventional Seals - Install" in this manual for more information.

   Note: The rubber seal and all surfaces that make contact with the seals must be clean and dry. After installation of the seals, apply clean SAE 30 oil on the contact surfaces of the metal seals.

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   Illustration 5	g00547441

5. Install Duo-Cone seal kit (10) in collar (11) with Tool (B).
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   Illustration 6	g00547442

6. Install Duo-Cone seal kit (9) in the track carrier roller on the side without three threaded holes with Tool (B).
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   Illustration 7	g00547444

7. Carefully install shaft assembly (8) in the track carrier roller. Apply 9S-3263 Thread Lock Compound on the threads of socket head bolts (5) and (6). Install retainer (7) and socket head bolts (5) and (6). Tighten each bolt to a torque of 45 ± 5 N·m (33.2 ± 3.7 lb ft).
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   Illustration 8	g00547465

8. Check the condition of O-ring seal (4) that is used on cover (3). If the O-ring seal is damaged, use a new part for replacement. Apply clean oil on O-ring seal (4). Install the O-ring seal on cover (3).
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   Illustration 9	g00547467

9. Install cover (3) on the track carrier roller and three socket head bolts (1). Tighten three bolts (1) to a torque of 37 ± 4 N·m (27.3 ± 3.0 lb ft).

10. Put the track carrier roller in a vertical position. Fill the track carrier roller with 25 mL (0.85 oz) of clean SAE 30 oil. Apply a thin coat 5P-3413 Pipe Sealant on the threads of plug (2). Install plug (2).

End By:

1. Install the track carrier roller. Refer to Disassembly and Assembly, "Track Carrier Roller - Install" in this manual.