D8R TRACK-TYPE TRACTOR 9EM00001-UP (MACHINE) POWERED BY 3406...
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  Product: TRACK-TYPE TRACTOR
  Model: D8R TRACK-TYPE TRACTOR 9EM
  Configuration: D8R TRACK-TYPE TRACTOR 9EM00001-UP (MACHINE) POWERED BY 3406C Engine
 Disassembly and Assembly
 D8R Track-Type Tractor Power Train
 Media Number -SENR8327-12              Publication Date -01/05/2019            Date Updated -20/05/2019
                                                                                               i01022202
 Track - Assemble
 SMCS - 4170-016
 Assembly Procedure
                            Table 1
                       Required Tools
  Tool    Part Number             Description            Qty
   A      8S-9906           Ratchet Puller                 1
   C      2S-8215           Guide Pin                      2
          9U-6600           Manual Pump                    1
   D
          6V-3170           Double Acting Cylinder         1
    F     4C-8619           Seal Installer                 1
          9U-6600           Manual Pump                    1
          150-6624          Track Tool Arrangement         1
   G      6V-4103           Forcing Pin                    1
          6V-4105           Forcing Pin                    1
          6V-4108           Offset Adapter                 1
          9U-6600           Manual Pump                    1
          150-6624          Track Tool Arrangement         1
   H
          8T-5133           Receiver                       1
          8T-7783           Cap                            1
    J     8T-3115           Track Lubricator               1
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D8R TRACK-TYPE TRACTOR 9EM00001-UP (MACHINE) POWERED BY 3406...                        Page 2 of 7
   K      5P-7419          Plug Installer                  1
 Reference: Refer to Specifications, SENR8324, "Tracks" in the Service Manual for your machine.
 Note: Inspect all the components of the track for wear or damage. Replace the worn components
 and the damaged components. The components must be clean and dry before assembly.
       Illustration 1                              g00619713
       Note: Maintain some clearance between the link and tool (G) at location (Y).
    1. Apply SAE 90W gear oil to each end of bushing (12) for a minimum length of 6.5 mm
       (0.25 inch).
                                                 NOTICE
                 Use a maximum force of 660 kN (148500 lb) when the track is
                 assembled.
    2. Use tool (G) to install bushing (12) in the link.
    3. Install the bushing in the link until the bushing makes contact with the 6V-4108 Offset
       Adapter in tool (G). The track bushing must extend 1.76 ± 0.13 mm (0.069 ± 0.005 inch)
       above the surface of the link.
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D8R TRACK-TYPE TRACTOR 9EM00001-UP (MACHINE) POWERED BY 3406...                         Page 3 of 7
       Illustration 2                               g00619715
    4. Position link (5), bushing (12), and link (6) in tool (G).
    5. Install tool (C) in order to align links (6) and (5).
    6. Install bushing (12) in link (5) until the bushing makes contact with the 6V-4108 Offset
       Adapter in tool (G). The track bushing must extend 1.76 ± 0.13 mm (0.069 ± 0.005 inch)
       above the surface of the link.
       Illustration 3                               g00619717
                                                   NOTICE
                 The seal must be completely sealed in the link counterbore. The load
                 ring of the seal must make a minimum amount of contact with oil. Oil
                 expands the load ring. This expansion is not desired until after
                 assembly.
    7. Use tool (F) to install seals in links (6) and (5).
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D8R TRACK-TYPE TRACTOR 9EM00001-UP (MACHINE) POWERED BY 3406...                           Page 4 of 7
       Illustration 4                                                   g00619746
       (L) Track link
       (M) Load ring
       (N) Track link
       (P) Track bushing
       (R) Seal
       (S) Thrust ring
       (T) Track pin
       (X) Contacting surface
                                               NOTICE
                 Make sure there is contact at area (X) between the seal and load ring.
    8. Install the thrust ring in the links.
       Illustration 5                           g00619747
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D8R TRACK-TYPE TRACTOR 9EM00001-UP (MACHINE) POWERED BY 3406...                              Page 5 of 7
    9. Apply clean oil to stoppers (13) and install the stoppers in the track pins. The stopper must
       be installed to a depth of 8 ± 4 mm (0.32 ± 0.16 inch) below the surface of the track pin.
        Illustration 6                             g00619748
   10. Position tool (D) between the track links. Use tool (D) to force apart the links enough to
       install link assembly (10).
   11. Attach a hoist to link assembly (10). Position the link assembly and install tool (C) in order
       to hold the link assembly in place.
        Illustration 7                             g00619749
   12. Position tool (D) between links (5) and (6). Use tool (D) to force apart the links enough to
       install link assembly (7).
   13. Attach a hoist to the link assembly. Position the link assembly on link assembly (7).
       Note: If necessary, use tool (A) to pull the track links together until tool (C) can be
       installed.
   14. Install tool (C) in order to hold the link assemblies together.
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D8R TRACK-TYPE TRACTOR 9EM00001-UP (MACHINE) POWERED BY 3406...                                   Page 6 of 7
        Illustration 8                              g00619750
   15. Attach a hoist to tool (H). Position tool (H) and track pin (4) on the track links.
       Note: The hole end of the pin must be installed on the same side of the track for the entire
       length of the track. The oil cross hole in the pin must be within 20 degrees of the vertical
       centerline of the pin bore. The oil cross hole in the pin must be closest to the rail of the link.
       The track pins are marked on the end for the location of the oil cross hole. The pin must be
       installed with a minimum amount of force in order to obtain a maximum of 0.20 mm
       (0.008 inch) of end play between the bushing and the thrust ring.
   16. Use tool (H) to install track pin (4). Install track pin (4) until the track pin extends
       2.9 ± 0.8 mm (0.11 ± 0.03 inch) beyond the link assembly.
   17. Repeat Steps 15 and 16 in order to install the remaining track pin.
        Illustration 9                              g00619751
       Note: If the joint fails the vacuum test or the pressure test, the joint must be disassembled
       and repaired.
   18. Use tool (J) to evacuate the joint. Release the button that controls the evacuation of the joint
       when the maximum vacuum is reached. Observe the gauge reading for ten to fifteen
       seconds. No reduction in vacuum should be observed.
   19. Press the button that controls the oil in order to fill the joint with SAE 90W gear oil. Fill the
       joint until the needle on the gauge stabilizes. Release the button that controls the oil and
       observe the gauge reading. No pressure drop should be observed. If a pressure drop occurs,
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D8R TRACK-TYPE TRACTOR 9EM00001-UP (MACHINE) POWERED BY 3406...                                  Page 7 of 7
        press the button that controls the oil for ten to fifteen seconds. Fill times will vary for seal
        cavities. Oil must seep by the small grooves in the thrust rings. Repeat the procedure in
        order to fill the joint with oil until no pressure drop is observed.
   20. Press the button that controls the evacuation of the joint and hold the button for five seconds
       before removing tool (J).
   21. Apply clean oil to the plug.
   22. Use tool (K) to install the plug in the stopper in the end of the track pin. Install the plug in
       the stopper until the plug is flush with the end of the stopper.
        Note: The track shoe weighs 28 kg (62 lb).
   23. Use two persons to position the four track shoes on the track.
   24. Apply clean SAE 30W oil to the washer face and the threads of the track shoe bolts.
   25. Install the track shoe bolts.
   26. Tighten the track shoe bolts to a torque of 650 ± 70 N·m (480 ± 50 lb ft). Tighten the bolts
       by another 1/3 turn.
 End By:
    a. Adjust the track. See the procedure in Disassembly and Assembly, "Track - Connect" in this
       module.
 Copyright 1993 - 2025 Caterpillar Inc.                                     Fri Mar 7 14:50:05 UTC+0300 2025
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