2014/01/03 Caterpillar


The Hydraulic Fan Lines Group Has Been Updated on Certain 793F Off-Highway Trucks {1386, 1387, 5057}

Usage:

793F AC EMD
Off-Highway Truck:
793F AC (S/N: EMD1-UP)
793F (S/N: SND1-UP; SSP1-UP; RBT1-UP)

Description of Change: The tube assembly in the hydraulic fan lines group has been improved with a saddle style boss. The new saddle style boss provides a stronger welded joint and better sealing.

Adaptable To:

Table 1
New Part List    
Item     Qty     Part Number     Description    
1     1     293-0742     Tube As    
-     1     235-2479     Rectangular Seal    
-     2     238-5084     O-Ring Seal    
-     1     6V-4590     O-Ring Seal    



Illustration 1g03482617

323-1176 Hydraulic Fan Lines Gp



Follow the below procedure to install the tube assembly in the hydraulic fan lines group.

  1. Prepare the machine for maintenance as per your machine OMM guidelines.

  1. Drain the fluid from the lines group.

  1. Remove the old 293-0742 Tube As. Discard the part.



    Illustration 2g03482619

  1. Install the improved tube assembly (1) with 235-2479 Rectangular Seal at location (A), 238-5084 O-Ring Seals at location (B), and 6V-4590 O-Ring Seal at location (C) as shown in the Illustration 2.

  1. Refill the fluid and ensure that there is no leakage in the tube assembly.
The new tube assembly is adaptable to machines and effective in production with machines that are listed in Table 2.

Table 2
Sales Model     Adaptable to Machines     Effective with Machines    
793F     S/N:SSP1-981     S/N:SSP982-UP    
793F AC     S/N:EMD1-77     S/N:EMD78-UP    
793F CMD     S/N:RBT1-171     S/N:RBT172-UP    
793F XQ     S/N:SND1-131     S/N:SND132-UP    

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