PRODUCT SUPPORT PROGRAM FOR REPAIRING MID-FRAME CRACKS AT THE PUMP DRIVE MOUNT ON CERTAIN 793F, 793F CMD, AND 793F XQ OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPAIRING MID-FRAME CRACKS AT THE PUMP DRIVE MOUNT ON CERTAIN 793F, 793F CMD, AND 793F XQ OFF-HIGHWAY TRUCKS

Usage:

TEBE3586-02

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22Oct2015

(Revised 21Jul2016)

U-567

D-494

O-495

A-411

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After Failure Only	PRODUCT SUPPORT PROGRAM FOR REPAIRING MID-FRAME CRACKS AT THE PUMP DRIVE MOUNT ON CERTAIN 793F, 793F CMD, AND 793F XQ OFF-HIGHWAY TRUCKS
7050 7051 0679		PS53059

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NOTE:	Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.
NOTE:	This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS53059" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

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NOTE:

The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

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NOTE:	This Revised Service Letter replaces the 22Oct2015 (Revised 21Mar2016) Service Letter. Changes have been made to the Title, Termination Date, Problem, and Affected Product.

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TERMINATION DATE

31Dec2019

PROBLEM

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Frame cracking has been reported on the pump drive mount in the mid-frame area of certain 793F, 793F CMD, and 793F XQ Off-Highway Trucks. This program applies to cracks found in the fillet weld connecting the pump drive mount to the inside window plate of the right frame rail. Before applying this program please contact Large Off-Highway Truck Product Support for additional repair recommendations. Cracks that go unidentified or identified and left unattended can lead to invasive frame repairs and/or severe frame damage.

AFFECTED PRODUCT

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Model	Identification Number
793F	SSP00112, 114-123, 125-127, 129-162, 164-196, 198, 202, 205-243, 245, 247-255, 257-260, 262-270, 272-306, 308-351, 353-355, 357-361, 364-365, 367-396, 398-452, 454, 456-483, 485-499, 501-560, 562-593, 595-694, 696-706, 709-711, 714-719, 721-724, 726-740, 742-744, 746-753, 755, 757-759, 761-771, 773-883, 887-943
793F CMD	RBT00111-00123, 125-131, 133-140, 142-164
793F XQ	SND00100-00109, 111-131

PARTS NEEDED

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No parts needed for this program

ACTION REQUIRED

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If a crack is identified on the pump drive mount, excavate and repair crack per the specifications listed in the Rework Procedure.

Refer to Images 1&2 for pump drive mount location and Image 3 for an example of a crack on the pump drive mount at the upper rear corner.

Note: Refer to the machines Operation and Maintenance Manual for frame inspection frequency.

Note: Full frame inspection and repair guidelines can be found in Special Instruction REHS7193 - Procedure for the Inspection, Repair, and Component Replacement on the Frame of the 793F, 793F AC and the 793F Command For Hauling Off-Highway Trucks{0679, 7051}.

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Image1

Image2

Image3

SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-24000 hrs, 0-48 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
24001-40000 hrs, 49-80 mo	100.0%	50.0%	0.0%	0.0%	0.0%	50.0%

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NOTE: This is a 6.0-hour job
21 additional labor hours allowed if the pump drive is required to be removed to complete the repair. 1 additional labor hour allowed if the 2 blocks on the window plate are TIG dressed. It is required to attach pictures showing the cracking and all post-repair TIG dressed fillet welds to SIMSi when submitting the warranty claim. This program can be applied multiple times if necessary.

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PARTS DISPOSITION

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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Rework Procedure

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Refer to the "Procedure for Repairing Frame Cracks at the Pump Drive Mount and Inner Right-Hand Window Plate on the Mid Frame Section" section in Special Instruction REHS7995 "Procedure to Inspect and Repair the Center Section Frame on Certain 793F Off-Highway Trucks".