2009/06/29 New Hardware is Available for Certain Wheel Tractor-Scrapers Draft Frames {6204, 7000, 7960} Caterpillar


New Hardware is Available for Certain Wheel Tractor-Scrapers Draft Frames {6204, 7000, 7960}
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Wheel Tractor-Scraper:
657G (S/N: W1B1-UP; W1C1-UP; A4G1-UP)

ReferenceDisassembly and Assembly, RENR9714, "Draft Arm Assembly - Install"

ReferenceSpecial Instruction, REHS2623, "Assembly Procedure for 657G Wheel Tractor-Scrapers"

Description of Change: New bolts, washers, and nuts are available for the machines that are listed above. The new hardware will improve the bolted joint on the draft frame. The improved bolted joint will have lengthened service life and increased durability.

Adaptable To: The new 299-3423 Nut, 334-4466 Washer, and 6C-3213 Bolt are effective on the following machines.

  • 657G (S/N: A4G1-100; W1B1-137; W1C1-282)

The new 299-3423 Nut, 334-4466 Washer, and 6C-3213 Bolt are already installed on the following machines.

  • 657G (S/N: A4G101-UP; W1B138-UP; W1C283-UP)




Illustration 1g01901004

(1) 299-3423 Nut

(2) 334-4466 Washer

(3) 6C-3213 Bolt

Refer to Table 1 for the amount of new bolts, nuts, and washers to use.

Table 1
Required Parts    
Part Number     Description     Quantity    
299-3423     Nut     72    
334-4466     Washer     144    
6C-3213     Bolt     72    
Be sure to use the proper tightening sequence on the new bolts. Refer to Disassembly and Assembly, RENR9714, "Draft Arm Assembly - Install" or refer to Special Instruction, REHS2623, "Assembly Procedure for 657G Wheel Tractor-Scrapers".

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