2013/10/17 Caterpillar


New Tube Assemblies are Available for the 797, and 797B Off-Highway Trucks {5056}

Usage:

797 5YW
Off-Highway Truck/Tractor:
797 (S/N: 5YW1-UP)
797B (S/N: JSM1-UP)
Service Magazine SEPD1627, 21 June 2013, "A New Tube Assembly is Now Used on the 797B Off-Highway Truck". Disregard this article. Refer to the article that follows.


Illustration 1g03479697

The new tube assembly design (1) uses radially slotted flanges and a flexible steel section. The new tube assembly design reduces cracking and improves service life. The new tube assemblies are available as service replacements for the current tube assemblies. The current tube assemblies are still serviced.

The new 377-9933 Tube As is service replacement for the 212-6156 Tube As, and the 209-6410 Tube As in the 205-0844 Hydraulic Tank Gp. The new 378-3447 Tube As is service replacement for the 212-6155 Tube As, and the 209-6410 Tube As in the 205-0844 Hydraulic Tank Gp .

The new 1H-0474 O-Ring Seal is used with the 377-9933 Tube As and the 378-3447 Tube As .

The new 377-9933 Tube As and the new 378-3447 Tube As are adaptable to machines JSM1-UP, and 5YW258-UP.

The new 439-8426 Tube As is service replacement for the 174-3654 Tube As, and the 195-5843 Tube As in the 195-6393 Hydraulic Tank Gp. The new 439-8429 Tube As is service replacement for the 174-3653 Tube As, and the 195-5843 Tube As in the 195-6393 Hydraulic Tank Gp .

The new 1H-0474 O-Ring Seal is used with the 439-8426 Tube As and the 439-8429 Tube As .

The new 439-8426 Tube As and the new 439-8429 Tube As are adaptable to machines 5YW1-257.

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