PRODUCT SUPPORT PROGRAM FOR REWORKING THE 257-9910 SUPPORT AS AND 311-7746 SUPPORT AS ON CERTAIN 777F AND 777G OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REWORKING THE 257-9910 SUPPORT AS AND 311-7746 SUPPORT AS ON CERTAIN 777F AND 777G OFF-HIGHWAY TRUCKS

Usage:

TEBE3689-01

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07Oct2015

(Revised 01Dec2015)

K02A
K02C
K030
K031
K040
K042
K070
K113
K230
K311
K313
K314
K319
K350
K380
K410
K430
K590
K602
K630
K632
K645
K646
K680
K690
Q630
Q632
Q637
Z800
Z850

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Before/After (Limited distribution)	PRODUCT SUPPORT PROGRAM FOR REWORKING THE 257-9910 SUPPORT AS AND 311-7746 SUPPORT AS ON CERTAIN 777F AND 777G OFF-HIGHWAY TRUCKS
7755 7051 0679		PS44877

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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 must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS44877" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "96" as the Warranty Claim Description Code, and "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 07Oct2015 Service Letter. Changes have been made to the Affected Product.

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TERMINATION DATE

31Oct2017

PROBLEM

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The existing support assemblies can develop a fatigue crack on certain 777F and 777G Off-Highway Trucks. If the existing support assembly fails a fatigue crack will develop in the fillet weld toe at the D-ring plates.

AFFECTED PRODUCT

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Model	Identification Number
777F	JRP02307-02310, 2321, 2329, 2343-2345, 2352-2353, 2360-2361, 2374-2376, 2379-2380, 2384-2393, 2421, 2424-2429, 2431, 2443-2444, 2456, 2499-2500, 2507, 2509, 2511, 2515-2516, 2524-2525, 2553-2554, 2557, 2560-2561, 2569, 2574-2575, 2577, 2579, 2593, 2597, 2600, 2614-2616, 2619-2620, 2623, 2626-2627, 2629, 2631-2632, 2637, 2639, 2641, 2643, 2646, 2648, 2651, 2653, 2656, 2660-2662, 2664, 2666, 2668, 2670, 2676, 2680, 2700-2702, 2715, 2717, 2720, 2722, 2724, 2745, 2747-2748, 2751, 2753-2754, 2809, 2811, 2813, 2899-2901, 2906, 2908, 2910, 2912, 2914, 2916, 2918, 2925-2927, 2929-2931, 2933-2934, 2941-2942, 2963-2964, 2995-2996, 3014, 3016, 3018, 3025, 3036-3038, 3043, 3045, 3057, 3059-3060, 3063, 3076-3078, 3089-3092, 3100, 3102, 3104, 3108, 3118, 3120, 3122-3123, 3126, 3129-3131, 3133, 3135, 3139, 3143, 3148, 3151-3155, 3158-3160, 3169, 3171-3176, 3184, 3186-3191, 3194-3196, 3199, 3201, 3207, 3209, 3211-3212, 3214, 3216, 3218, 3220, 3222-3224, 3226, 3228, 3230, 3243, 3245, 3249, 3254, 3256, 3268, 3270-3273, 3289-3297, 3322, 3325-3326, 3329, 3331, 3333-3337, 3340
777F OEM	JXP00173, 175, 179-180, 219-220, 225, 230-232, 236-237, 253-256
777G	TNM00112, 114, 118-120, 122, 124, 135, 137, 139, 141, 159-162, 164, 166, 195, 197, 199, 201, 203, 234-236, 238, 241, 243, 255, 257, 259, 261, 263, 275, 282, 284, 286, 288, 290-291, 293, 295, 297, 300-302, 311-313, 340-341, 346, 349, 351, 353, 355, 360, 390-392, 419, 421, 423, 557, 563, 583, 589-600, 604-606, 608-611, 639-640, 659-668, 670-671, 673-674, 765-767
777G OEM	M6J00119-00120 T4Y00138-00139, 149, 156-157, 166-169, 176, 190-191

PARTS NEEDED

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No parts needed for this program

ACTION REQUIRED

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Refer to the Service Manual if/as necessary and see Special Instruction SEHS0324 "Procedure to Repair the Center Tube Assembly on Certain 777 Off-Highway Trucks" for rework procedure. If a fatigue crack is present failure to adhere to rework procedure may result in a crack reoccurring.

Provide a picture of any crack found with the following information: machine serial number, machine hours and identify crack as "left side crack" or "right side crack". E-mail information to obrien_todd@cat.com.

If a horizontal or diagonal fatigue crack is found in the tube similar to as shown in Image 1 e-mail pictures to Product Support at obrien_todd@cat.com for further review.

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Image1

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%
0-35000 hrs, 0-72 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 10.0-hour job
This is an 10 hour job, including time required for disassembly, TIG dress and reassembly. An additional 6 hours will be allowed to repair a single "partial through thickness" crack that is present in either of the outer D-ring welds in the support assembly. A maximum of 20 hours will be allowed if both outer D-ring welds require a "partial through thickness" repair. This includes the time required for disassembly, TIG dress and reassembly. An additional 25 hours will be allowed to repair a single "through thickness" crack that is present in either of the outer D-ring welds in the support assembly. A maximum of 60 hours will be allowed if both outer D-ring welds require a "through thickness" repair. This includes the time required for disassembly, TIG dress and reassembly.