PRODUCT SUPPORT PROGRAM FOR INSTALLING THE TIE ROD ASSEMBLY AND REPLACINGTHE MAIN DRIVESHAFT UNIVERSAL JOINTS ON CERTAIN 793F OFF-HIGHWAY TRUCKS Caterpillar


PRODUCT SUPPORT PROGRAM FOR INSTALLING THE TIE ROD ASSEMBLY AND REPLACINGTHE MAIN DRIVESHAFT UNIVERSAL JOINTS ON CERTAIN 793F OFF-HIGHWAY TRUCKS

Usage:

TEBE6754-00

23Oct2017


E500

 
Containment -
Before/After

 (Limited distribution) 
  

PRODUCT SUPPORT PROGRAM FOR INSTALLING THE TIE ROD ASSEMBLY AND REPLACINGTHE MAIN DRIVESHAFT UNIVERSAL JOINTS ON CERTAIN 793F OFF-HIGHWAY TRUCKS

3082 3281
PS90787
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 Containment Program can be administered either before or after a failure occurs. In either case the decision whether to apply the Program is made by the dealer and service rep. Obtain the service reps Goodwill Approver Code before completing the repair. EAME dealers should use their standard Industry Group specific goodwill approval codes. The Goodwill Approver Code must be included when submitting the claim.

NOTE:

When reporting the repair, use "PS90787" as the Part Number and "7777" as the Group Number. If administered before failure, use "56" as Warranty Claim Description and "T" as the SIMS Description Code. If administered after failure, use "96" as Warranty Claim Description Code and use "Z" as the SIMS Description Code.

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.


TERMINATION DATE

31Oct2019

PROBLEM

The existing universal joint can prematurely fail due to vibration on
certain 793F Off-Highway Trucks. If the existing universal joint fails,
it can fail leading to additonal machine damage, include transmission
case failures.

AFFECTED PRODUCT

Model Identification Number
793F  SSP00553, 672-673, 693, 769, 841-842, 861, 873, 990, 998, 1061

PARTS NEEDED

Qty

Part Number Description
2 8D3791 PIN
3 8T0360 BOLT
2 1508355 UNIV JOINT AS
16 1567993 BOLT-HEX HEAD
3 1984769 WASHER-HARD
3 2264192 WASHER - HARD
1 4598466 PLATE AS
2 4598467 PIN
1 4604882 PLATE AS
1 4649177 TIE ROD AS
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 32% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.


ACTION REQUIRED

Refer to the Service Manual if/as necessary. Replace the universal
joint per KENR8397.
Install the tie rod assembly and plates per Special Instructions SEHS0006 "Procedure to Install a Rear Axle Tie Rod Stiffener to the 793F Off-Highway Truck". The tie rod assembly will connect the rear axle and transmission.
This will create a stiffer drivetrain that will be less susceptible to vibration issue, which will extend u-joint service life.
Perform a visual inspection for cracks on the welded joint near the transmission case flange. A crack can possibly form in the weld between the gussets on the right and left side of the transmission case. Please see diagrams below. Clean the area and inspect for visible cracks or signs of oil leakage. If a crack is found, please work through your Dealer Technical Communicator to submit this information to the DSN(Dealer Solution Network) for information necessary to complete any repairs prior to proceeding.
Image1
Image2

SERVICE CLAIM ALLOWANCES

Product smu/age whichever comes first
Caterpillar
Dealer Suggested
Customer Suggested
Parts %
Labor Hrs%
Parts %
Labor Hrs%
Parts %
Labor Hrs%
0-50000 hrs,
0-85 mo 
33.0%
0.0%
0.0%
25.0%
50.0%
75.0%
 NOTE: This is a 9.0-hour job



PARTS DISPOSITION

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

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