GSV520 and GSV525 Orange Peel Grapples Hydraulic Rotator - Remove and Install Caterpillar


Hydraulic Rotator - 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 
439-3939  Link Bracket 
439-3938  Link Bracket 

Start by:

a. Remove the head assembly and bushing.

Note: Cleanliness is an important factor. Before you begin the removal procedure, the exterior of the components should be thoroughly cleaned to prevent dirt from entering the internal mechanism.


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.




    Illustration 1g06022878


    Illustration 2g06032588

  1. Disconnect hose assemblies (1). Use a suitable socket to remove adapters (2). Remove adapters (2) from the distributor assembly.


    Illustration 3g06022884
    Typical example


    Illustration 4g06022886


    Illustration 5g06022887

  2. Attach Tooling (A) and a suitable lifting device to hydraulic rotator (3). The weight of hydraulic rotator (3) is approximately 250 kg (551 lb).

  3. Remove plug assembly (4).

  4. Rotate hydraulic rotator (3) to access bolts (5) to remove. Remove bolts (5) and hydraulic rotator (3).


    Illustration 6g06022909

  5. Remove bolts (6) and distributor assembly (7).


    Illustration 7g06022912

  6. Remove O-ring seals (8).


    Illustration 8g06022922

  7. Position the hydraulic rotator onto a suitable blocking. Use Tooling (A) to remove housing assembly (10) from swivel (11). The weight of housing assembly (10) is approximately 215 kg (474 lb). Remove bolts (9) and housing group (10).


    Illustration 9g06022944

  8. Remove O-ring seals (12) from the swivel.


    Illustration 10g06022952


    Illustration 11g06022958

  9. Attach Tooling (A) and a suitable lifting device to housing assembly (10). The weight of housing assembly (10) is approximately 145 kg (320 lb). Remove bolts (13) and remove housing assembly (10) from gear assembly (14).

  10. Remove O-ring seals (15) from the gear.

Installation Procedure

Table 2
Required Tools 
Tool  Part Number  Part Description  Qty 
Loctite 243 

  1. Install hydraulic rotator (3) in the reverse order of removal.

    1. Apply Tooling (A) to the threads of bolts (13). Tighten bolts (13) to a torque of 520 ± 70 N·m (384 ± 52 lb ft).

    2. Apply Tooling (A) to the threads of bolts (9). Tighten bolts (9) to a torque of 105 ± 20 N·m (77 ± 15 lb ft).

    3. Apply Tooling (A) to the threads of bolts (6). Tighten bolts (6) to a torque of 105 ± 20 N·m (77 ± 15 lb ft).

    4. Apply Tooling (A) to the threads of bolts (5). Tighten bolts (5) to a torque of 520 ± 70 N·m (384 ± 52 lb ft).

End by:

a. Install the head assembly and bushing.

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