14H Motor Grader Machine Systems Circle Drive - Remove Caterpillar


Circle Drive - Remove
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1.1. Removal Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
439-3940  Link Bracket 
1U-7505  Hydraulic Jack 

Start By:

  1. Remove the gerotor motor.


    Illustration 1g00929322

  1. Bend lock (1) from nut (2). Remove nut (2), lock (1), and washer (3).

  2. Remove O-ring seal (4). Remove nuts (5).


    Illustration 2g00929323

  3. Remove bolts (6).

  4. Remove bolts (7).


    Illustration 3g00929325

  5. Attach Tooling (A) to circle drive (8). Attach a suitable lifting device to Tooling (A). The weight of circle drive (8) is approximately 127 kg (280 lb).

  6. Use Tooling (B) to support pinion gear (9). Raise circle drive (8) and remove pinion gear (9) and thrust washer (10).

    Note: To avoid hand injuries, do not use your hands to support the pinion gear.



    Illustration 4g00929328

  7. Remove Duo-Cone seal (11) from circle drive (8). Remove circle drive (8).


    Illustration 5g00929332

  8. Remove Duo-Cone seal (12) from gear (9).

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