2008/07/07 Caterpillar


A New Pinion Assembly Updates the Differential Group {3258}

Usage:

793B 1HL
Off-Highway Truck:
793 (S/N: 3SJ1-UP)
793B (S/N: 1HL1-UP)
793C (S/N: CBR1-UP; 4AR1-UP; ATY1-UP; 4GZ1-UP)
793D (S/N: FDB1-UP)

Description of Change: A new pinion assembly is now used in the differential group. The former pinion assembly had a tooth profile with a spline that had a full radius. The new design of the new pinion assembly has a tooth profile with a spline that has a flat root. This improves the lubrication to the spline joint. This will increase the service life of the pinion assembly in the field.

Adaptable To:




Illustration 1g01527359

The new 308-7792 Pinion As (1) is a direct replacement for the former 104-4701 Pinion As in the 282-1775 Differential Gp. The new pinion assembly is adaptable back to the beginning of production of the machines. The new pinion assembly became effective in production with the machine FDB650-UP.

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