PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND REPLACING THE STEERING ACCUMULATOR CLAMPS ON CERTAIN 789D, 789D XQ, 793D, 793F, 793F AC, 793F CMD, 793F XQ, AND 795F AC OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND REPLACING THE STEERING ACCUMULATOR CLAMPS ON CERTAIN 789D, 789D XQ, 793D, 793F, 793F AC, 793F CMD, 793F XQ, AND 795F AC OFF-HIGHWAY TRUCKS

Usage:

TEBE0804-03

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03Feb2014

(Revised 02Jul2014)

U-51

A-35

D-47

O-46

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND REPLACING THE STEERING ACCUMULATOR CLAMPS ON CERTAIN 789D, 789D XQ, 793D, 793F, 793F AC, 793F CMD, 793F XQ, AND 795F AC OFF-HIGHWAY TRUCKS
4331		PI32293

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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 as soon as possible. When reporting the repair, use "PI32293" as the Part Number and "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. Exception: If the repair is done after failure, use "PI32293" as the Part Number, "7751" as the Group Number, "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 03Feb2014 (Revised 09May2014) Service Letter. Changes have been made to the Affected Product.

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COMPLETION DATE	TERMINATION DATE
31Aug2014	28Feb2015

PROBLEM

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The 3025790/">302-5790 Steering Accumulator Clamps need to be inspected and potentially replaced on certain 789D, 789D XQ, 793D, 793F, 793F AC, 793F CMD, 793F XQ, and 795F AC Off-Highway Trucks. The existing steering accumulator clamps can fail, causing the steering accumulator to become unsecured. This can lead to an abrupt loss of steering pressure.

AFFECTED PRODUCT

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Model	Identification Number
*****Group 1*****
793F	SSP00112-00999
793F AC	EMD00075-00077
793F XQ	SND00100-00116, 118-131

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*****Group 2*****
795F AC	ERM00151-00293

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*******Group 3*******

793D

FDB00109-00119, 121, 155-157, 177, 181-182, 193, 198-202, 205-206, 219-226, 228-229, 250, 253, 266, 273, 277-278, 303, 305-310, 321-323, 330-331, 337-339, 341-342, 344-353, 360-364, 369-371, 376, 378, 381, 383, 390, 392, 396, 402, 409, 412, 416, 421, 427-429, 434-436, 441-446, 454-457, 465-468, 478-484, 486-488, 501, 510, 523, 525, 527, 539-544, 546-547, 549, 558, 560, 562, 564, 566-572, 581, 588, 590, 594, 600, 602-604, 606, 611-613, 615, 617, 619, 621-623, 627-629, 632, 634-635, 637-638, 640, 649, 661, 665-667, 669, 671, 676, 679-681, 683, 687, 689, 691-694, 696, 698, 701, 731, 738-739, 748-749, 754-757, 762, 764, 766, 768, 777-780, 782-784, 791-793, 795-801, 807-809, 811, 815, 822, 826-828, 833, 835, 842, 848, 851, 853-855, 857-858, 861-862, 864-875, 883-887, 894-895, 899-900, 902, 906-908, 931-936, 938-939, 963-966, 970-975, 977, 979-983, 986-988, 990-991, 995-998, 1001-1018, 1021, 1023-1030, 1034, 1036-1045, 1047-1053, 1057-1059, 1061, 1063-1070, 1072, 1074, 1077-1081, 1084-1085, 1087-1094, 1096-1099, 1101-1105, 1107-1108, 1111-1112, 1114, 1116-1118, 1120-1127, 1129-1139, 1142, 1145, 1148, 1158-1161, 1173-1185, 1187-1188, 1198-1201, 1208, 1217-1828

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*****Group 4*****
789D	SPD00166-00495, 497-644
789D XQ	SHH00288-00319

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*****Group 5*****
793F CMD	RBT00111-00171

PARTS NEEDED

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Qty	Part Number	Description
*****Group 1*****
6	3025790	CLAMP AS.
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 40% 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*****
6	3025790	CLAMP AS.
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 39% 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 3*****
6	3025790	CLAMP AS.
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 40% 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 4*****
6	3025790	CLAMP AS.
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 40% 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 5*****
8	3025790	CLAMP AS.
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 40% 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

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NOTE: This inspection should be repeated every 1000 hours until a permanent corrective action is identified.

Wash the unit in the area of the steering accumulators. See the image below for an example on a 793F Off-Highway Truck. Pay special attention to removing all material from the clamps. Visually, at close distance, inspect each clamp for signs of cracks, loosening or any other indications of failure. If no clamps have failed the unit may be returned to service. If any clamps are found to be cracked replace them with new parts. Only replace clamps that are broken. Unbroken clamp replacement is not covered by this Service Letter. Below are some examples of cracked clamps for reference.

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Image1

Image2

Image3

Image4

OWNER NOTIFICATION

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Owners in the following countries will receive the attached Owner Notification:
US
Canada

SERVICE CLAIM ALLOWANCES

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Caterpillar		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
*****Group 1*****
100%	100%	0%	0%	0%	0%

NOTE: This is a 2.0-hour job for Group 1
This inspection should be repeated every 1000 hours. The letter may be claimed each time the machine is inspected until a permanent corrective action is identified.

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Caterpillar		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
*****Group 2*****
100%	100%	0%	0%	0%	0%

NOTE: This is a 2.0-hour job for Group 2
This inspection should be repeated every 1000 hours. The letter may be claimed each time the machine is inspected until a permanent corrective action is identified.

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Caterpillar		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
*****Group 3*****
100%	100%	0%	0%	0%	0%

NOTE: This is a 2.0-hour job for Group 3
For machines S/N:FDB1-1216, the situation only applies if the machine has been updated to the piston style accumulators from the bladder style accumulators. This inspection should be repeated every 1000 hours. The letter may be claimed each time the machine is inspected until a permanent corrective action is identified.

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Caterpillar		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
*****Group 4*****
100%	100%	0%	0%	0%	0%

NOTE: This is a 2.0-hour job for Group 4
This inspection should be repeated every 1000 hours. The letter may be claimed each time the machine is inspected until a permanent corrective action is identified.

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Caterpillar		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
*****Group 5*****
100%	100%	0%	0%	0%	0%

NOTE: This is a 2.0-hour job for Group 5
This inspection should be repeated every 1000 hours. The letter may be claimed each time the machine is inspected until a permanent corrective action is identified.

PARTS DISPOSITION

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

MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.

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EXAMPLE COPY OF OWNER NOTIFICATION

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND REPLACING THE STEERING ACCUMULATOR CLAMPS ON CERTAIN 789D, 789D XQ, 793D, 793F, 793F AC, 793F CMD, 793F XQ, AND 795F AC OFF-HIGHWAY TRUCKS

MODELS INVOLVED - 789D, 789D XQ, 793D, 793F, 793F AC, 793F CMD, 793F XQ, and 795F AC Off-Highway Trucks

Dear Cat Product Owner:

The steering accumulator clamps need to be inspected on the products listed. The existing clamps can fail, resulting in the steering accumulator(s) becoming unsecured. You will not be charged for the service performed.

Contact your local Cat dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.

If you are no longer the owner of this product(s), please contact your local Cat dealer so that our records can be updated. Please refer the dealer to their Service Letter dated 03Feb2014 when scheduling this service.

We regret the inconvenience this may cause you, but urge you to have this service performed as soon as possible to prevent unscheduled downtime.

Caterpillar Inc.

Identification #(s)

Attached to 03Feb2014 Service Letter