336D 2L and 340D 2L Excavators Machine Systems Swing Motor - Remove and Install Caterpillar


Swing 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 
138-7574  Link Bracket 

Start By:

a. Release the hydraulic system pressure.


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.


Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. Prevent fluid loss and helps to keep contaminants from entering the system.



    Illustration 1g06031224

  1. Disconnect hose assemblies (1), (2), (3), and (4).


    Illustration 2g06031232

  2. Disconnect hose assemblies (5), (6), and (7).


    Illustration 3g06031237

  3. Disconnect hose assemblies (8) and (9). Remove bolts (10). Disconnect harness assembly (11).


    Illustration 4g01210264

  4. Attach Tooling (A) and a suitable lifting device to swing motor (12). The weight of swing motor (12) is approximately 77 kg (170 lb). Remove bolts (13). Remove swing motor (12).

Installation Procedure



    Illustration 5g01210264

  1. Attach Tooling (A) and a suitable lifting device to swing motor (12). The weight of swing motor (12) is approximately 77 kg (170 lb). Install swing motor (12). Install bolts (13).


    Illustration 6g06031237

  2. Connect harness assembly (11). Install bolts (10). Connect hose assemblies (8) and (9).


    Illustration 7g06031232

  3. Connect hose assemblies (5), (6), and (7). Tighten hose assemblies (5) to a torque of 150 ± 15N·m (110 ± 12lb ft). Tighten hose assemblies (6) and (7) to a torque of 76 ± 4 N·m (56 ± 3 lb ft).


    Illustration 8g06031224

  4. Connect hose assemblies (1), (2), (3), and (4). Tighten hose assemblies (1) to a torque of 150 ± 15 N·m (110 ± 12 lb ft). Tighten hose assemblies (2), (3), and (4) to a torque of 190 ± 20 N·m (140 ± 15 lb ft).

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