PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING NEW POWER TRAIN (DRIVETRAIN) AND PROPULSION (MOTOR) SOFTWARE ON CERTAIN 795F AC OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING NEW POWER TRAIN (DRIVETRAIN) AND PROPULSION (MOTOR) SOFTWARE ON CERTAIN 795F AC OFF-HIGHWAY TRUCKS

Usage:

TEBE3645-00

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14Sep2015

U-487

A-350

D-416

O-420

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Priority	PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING NEW POWER TRAIN (DRIVETRAIN) AND PROPULSION (MOTOR) SOFTWARE ON CERTAIN 795F AC OFF-HIGHWAY TRUCKS
7610 7620 4800 4808 7490		PI32544

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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 "PI32544" 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 "PI32544" 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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COMPLETION DATE	TERMINATION DATE
31Mar2016	30Sep2016

PROBLEM

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The existing traction motor can fail on certain 795F AC Off-Highway Trucks. If the existing traction motor fails it can/will cause AC ground fault events and disable machine propulsion.

AFFECTED PRODUCT

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Model	Identification Number
795F AC	ERM00153, 155-156, 158-160, 163-164, 168, 174, 176, 180-181, 184-190, 193, 195-196, 198, 202, 205, 209-210, 216-217, 221, 225-227, 229-231, 233-244, 249-250, 253, 255-262, 264-269, 273-278, 280-285, 288-289

PARTS NEEDED

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Qty	Part Number	Description
1	4801926	SFWR GP-A5011
1	4805560	SFWR GP-A5000
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 45% 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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Install the latest Power Train (Drivetrain) and Propulsion (Motor) Software that is available on SIS Web.

Propulsion (Motor) Software
Previous Software: 439-2329
New Software: 480-1926

Power Train (Drivetrain) Software
Previous Software: 458-0317
New Software: 480-5560

**NOTE*
The Power Train (Drivetrain) and Propulsion (Motor) control software must be loaded together on the machine. Failure to do so will cause a software mismatch diagnostic.

The new software has the following improvements:

? Reduction of traction motor transient voltages.
? Reduction of engine speed to 1150 RPM on a 795F AC during retarding.
? Increased the event threshold for activating the generator bearing temperature events.
? Improved flight recorder data functions and information.

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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%
100%	100%	0%	0%	0%	0%

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NOTE: This is a 1.0-hour job

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PARTS DISPOSITION

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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 INSTALLING NEW POWER TRAIN (DRIVETRAIN) AND PROPULSION (MOTOR) SOFTWARE ON CERTAIN 795F AC OFF-HIGHWAY TRUCKS

MODELS INVOLVED - 795F AC OFF-HIGHWAY TRUCKS

Dear Cat Product Owner:

The drivetrain and propulsion software needs to be installed on the products listed below. The existing traction motor can fail on certain 795F AC Off-Highway Trucks. If the existing traction motor fails it can/will cause AC ground fault events and disable machine propulsion. 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 14Sep2015 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 14Sep2015 Service Letter