336D 2L and 340D 2L Excavators Machine Systems Final Drive and Travel Motor - Remove and Install Caterpillar


Final Drive and Travel Motor - Remove and Install
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1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
386-6031  Lever Puller Hoist Gp(1) 
439-3938  Link Bracket 
Loctite C5A Copper Anti-Seize 
(1) This part number complies with European requirements.

Note: Put identification marks on all hose assemblies, fittings, and ports so that all the components can be reassembled in the original configuration. Plug all the hose assemblies and cap all the fittings to prevent fluid loss and to keep contaminants from entering the system.


NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.

Dispose of all fluids according to local regulations and mandates.



NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.


------ WARNING! ------

Personal injury can result from hydraulic oil pressure and hot oil.

Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.

Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.


  1. Drain the final drive. Refer to Operation and Maintenance Manual, "Final Drive Oil - Change" for the correct draining and filling procedures.


    Illustration 1g06030788

  2. Remove bolts (1) and cover (2).

  3. Separate the track.


    Illustration 2g06030795

  4. Disconnect hose assemblies (3), (4), and (6). Remove fitting (5).


    Illustration 3g02108781

  5. Attach Tooling (A) and a suitable lifting device to final drive and travel motor (7). The weight of final drive and travel motor (7) is approximately 723 kg (1594 lb). Put a slight lifting tension on final drive and travel motor (7).


    Illustration 4g06032788

    Note: Mark the orientation of the final drive and travel motor assembly for installation purposes.

  6. Remove bolts (8).


    Illustration 5g06032791

  7. Use two bolts (8) to remove final drive and travel motor (7).

  8. Carefully remove final drive and travel motor (7).

  9. Remove bolts (8) from the frame.


    Illustration 6g06030846

  10. Remove bolts (9), counterbalance valve (10), and the O-ring seals.


    Illustration 7g02108794

  11. Attach Tooling (B) and a suitable lifting device to travel motor (11). The weight of travel motor (11) is approximately 88 kg (195 lb).

  12. Remove four bolts (12) and travel motor (11) from final drive (13).


    Illustration 8g02108914

  13. Remove coupling (14).

Installation Procedure

  1. Install final drive and travel motor (7) in the reverse order of removal.

    1. Tighten bolts (9) to a torque of 80 ± 8 N·m (60 ± 6 lb ft).

    2. Apply Tooling (C) to the threads of bolts (8). Tighten bolts (8) in an alternating sequence to a torque of 250 ± 25 N·m (184 ± 18 lb ft). Turn an additional angle of 45 ± 5 degrees. Refer to Service Magazine , M0083843 , "An Improved Bolt Tightening Procedure for the Critical Joints Is Now Used on all Excavators" for more detailed information.

    3. Tighten hose assembly (3) to a torque of 160 ± 16 N·m (120 ± 12 lb ft).

    4. Tighten bolts (1) to a torque of 130 ± 10 N·m (95 ± 7 lb ft).

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