Usage:
21Jul2016 |
After Failure Only | PRODUCT SUPPORT PROGRAM FOR REPAIRING MID-FRAME CRACKS AT THE COOLER MOUNTING BLOCKS ON CERTAIN 793F, 793F AC, 793F CMD, AND 793F XQ OFF-HIGHWAY TRUCKS |
|
7050 7051 0679 | PS53256 |
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 "PS53256" 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. |
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 |
31Dec2019 |
PROBLEM
Frame cracking has been reported on the cooler mounting blocks in the mid-frame area of certain 793F, 793F AC, 793F CMD, and 793F XQ Off-Highway Trucks. This program applies to cracks found in the fillet weld connecting the cooler mounting blocks to the inside left window plate of the 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
Model | Identification Number |
*******Group 1******* | |
793F | SSP00117-00123, 125-127, 129-154, 157-162, 169-186, 189, 191, 193-196, 198, 202, 205-210, 212, 214, 216-217, 219, 233, 237-243, 245, 247-255, 257-260, 262-266, 269-270, 272-278, 280-287, 291, 296-297, 304-306, 308, 312-314, 318-319, 321-326, 328, 330, 332-339, 341-345, 348-350, 353-355, 357-360, 365, 367-368, 375, 384-389, 393-394, 396, 398-438, 441-442, 444, 446, 448-450, 452, 454, 458, 460-483, 485-493, 496-499, 501-504, 506, 508-512, 515-516, 519, 521-525, 528-547, 550-560, 563-593, 595-603, 605, 610-622, 624-626, 633-634, 636-638, 644-653, 655, 658-661, 663, 665, 667-684, 687-694, 696-700, 702-706, 709-711, 714-716, 718, 721-724, 727-728, 730-732, 734-735, 737-740, 742-743, 746-747, 749, 751, 755, 757-758, 761-764, 766-769, 771, 773, 776-781, 784-785, 787-801, 803, 805, 807-810, 812-814, 816-819, 823-825, 829, 833, 837, 839-847, 850-859, 861-863, 865, 869-882, 887-888, 892-896, 898-900, 902, 904-907, 909-912, 914-915, 917-918, 921, 923-930, 932-936, 938-943 |
793F AC | EMD00075-00077 |
793F CMD | RBT00111-00123, 125-131, 133-140, 142-164 |
793F XQ | SND00100-00109, 111-131 |
*******Group 2******* | |
793F | SSP00112, 114-116, 155-156, 164-168, 187-188, 190, 192, 211, 213, 215, 218, 220-232, 234-236, 267-268, 279, 288-290, 292-295, 298-303, 309-311, 315-317, 320, 327, 329, 331, 340, 346-347, 351, 361, 364, 369-374, 376-383, 390-392, 395, 439-440, 443, 445, 447, 451, 456-457, 459, 494-495, 505, 507, 513-514, 517-518, 520, 526-527, 548-549, 562, 604, 606-609, 623, 627-632, 635, 639-643, 654, 656-657, 662, 664, 666, 685-686, 701, 717, 719, 726, 729, 733, 736, 744, 748, 750, 752-753, 759, 765, 770, 774-775, 782-783, 786, 802, 804, 806, 811, 815, 820-822, 826-828, 830-832, 834-836, 838, 848-849, 860, 864, 866-868, 883, 889-891, 897, 901, 903, 908, 913, 916, 919-920, 922, 931, 937 |
PARTS NEEDED
Qty |
Part Number | Description |
*******Group 1******* | ||
1 | 7X0752 | BOSS-WELD |
1 | 8T4935 | BOSS-WELD |
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 7% 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. |
||
*******Group 2******* | ||
8 | 5P1076 | WASHER-HARD |
1 | 7X0752 | BOSS-WELD |
10 | 8T4183 | BOLT-HEX HEAD |
4 | 8T4194 | BOLT-HEX HEAD |
4 | 8T4223 | WASHER-HARD |
6 | 8T4244 | NUT-HEX |
23 | 8T4910 | BOLT-HEX HEAD |
1 | 8T4935 | BOSS-WELD |
4 | 1729966 | BOLT-HEX HEAD |
51 | 1984778 | WASHER-HARD |
1 | 4931624 | PLATE |
1 | 4931627 | BRACKET AS |
1 | 4931628 | BRACKET AS |
1 | 4931629 | BRACKET AS |
1 | 4931630 | BRACKET AS |
1 | 4931631 | BRACKET AS |
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 7% 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
Excavate and repair any cracking per the specifications listed in the section "Repairing Frame Cracks at the Cooler Mounting Blocks and Inner Left-Hand Window Plate on the Mid Frame Section" in Special Instruction REHS7995 "Procedure to Inspect and Repair the Center Section Frame on Certain 793F Off-Highway Trucks". Update the window plate attachments, add post weld treatment, and update the auxiliary oil cooler mounting (if equipped) per the specifications listed in Special Instruction M0073048 "Procedure to Rework the Brake Oil Cooler Mounting on Certain 793F off-Highway Trucks". Refer to Images 1 and 2 for cooler mounting block location and Image 3 for an example of a crack on the cooler mounting block at the upper rear corner. |
Image1 |
Image2 |
Image3 |
SERVICE CLAIM ALLOWANCES
*******Group 1******* | ||||||
0-48 mo |
||||||
49-80 mo |
NOTE: This is a 16.0-hour job for Group 1 | ||||||
*******Group 2******* | ||||||
0-48 mo |
||||||
49-80 mo |
NOTE: This is a 19.0-hour job for Group 2 | ||||||
PARTS DISPOSITION
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling. |