D3K, D4K and D5K Track-Type Tractors Power Train Caterpillar

Installation Procedure

Note: Cleanliness is an important factor. Before assembly, thoroughly clean all parts in cleaning fluid. Allow the parts to air dry. Do not use wiping cloths or rags to dry parts. Lint may be deposited on the parts which may cause trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. Dirt and other contaminants can damage the precision component. Perform assembly procedures on a clean work surface. Keep components covered and protected always.

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Illustration 1	g06345148
Track Roller Location Dimensions for D3K and D3K2 Salt Undercarriage and D3K SystemOne Undercarriage (D1) 1278.1 mm (50.31 inch) (D2) 1044.1 mm (41.11 inch) (D3) 789.1 mm (31.07 inch) (D4) 489.1 mm (19.26 inch) (D5) 209.1 mm (8.23 inch)

1. Position the track roller assemblies according to the dimensions in the Illustrations above depending on the type of undercarriage. Position the first track roller (R1) and then position the other track rollers according to the appropriate dimensions.
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   Illustration 2	g01360799

2. Use Tooling (C) and a suitable lifting device to position track roller assembly (5). The weight of track roller assembly (5) is approximately 36 kg (80 lb).

3. Install bolts (6).

   Note: Refer to Table 2 for torque specifications for bolts (6).

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   Table 2

   BOLT SIZE	TORQUE SPECIFICATION
   M12	120 ± 20 N·m (89 ± 15 lb ft)
   M16	270 ± 40 N·m (199 ± 30 lb ft)

4. If necessary, repeat Steps 2 and 3 for remaining track rollers (5).
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   Illustration 3	g01410722

5. Install track guide guard (4).

6. Repeat Step 5 for the inside track guide guard.
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   Illustration 4	g01360774

7. Use two people to install track roller guard (3). The weight of track roller guard (3) is approximately 27 kg (60 lb).

8. Repeat Step 7 for the inside track roller guard.
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   Illustration 5	g01360714

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   Illustration 6	g01360724

9. Use Tooling (A) to raise the machine. Remove Tooling (B). Lower the machine with Tooling (A). Remove Tooling (A).
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   Illustration 7	g01360258

10. Turn relief valve (2) clockwise to close relief valve (2).

11. Adjust the track assembly. Refer to Operation and Maintenance Manual, "Track -Check/Adjust".
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    Illustration 8	g01360245

12. Install access cover (1).