PRODUCT IMPROVEMENT PROGRAM FOR CHANGING THE SOLENOID VALVES AND POWERTRAIN SOFTWARE IN THE TORQUE CONVERTER MODULATING VALVES ON CERTAIN 994 AND 994D WHEEL LOADERS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR CHANGING THE SOLENOID VALVES AND POWERTRAIN SOFTWARE IN THE TORQUE CONVERTER MODULATING VALVES ON CERTAIN 994 AND 994D WHEEL LOADERS

Usage:

SEBE8217-01

November 19, 2002
(Revised July 2003)
U-306
A-212
AU-225
S-224
H-223
O-249

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR CHANGING THE SOLENOID VALVES AND POWERTRAIN SOFTWARE IN THE TORQUE CONVERTER MODULATING VALVES ON CERTAIN 994 AND 994D WHEEL LOADERS
3016 3139 3030 7610		PI30426

NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI30426" 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 "PI30426" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "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.

NOTE: This Revised Service Letter replaces the November 19, 2002 Service Letter. Changes have been made to the Rework Procedure.

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COMPLETION DATE	TERMINATION DATE
May 31, 2003	November 30, 2003

PROBLEM

The solenoid valves and powertrain software need to be changed in the torque converter modulating valves on certain 994 and 994D Wheel Loaders. On 944 Wheel Loaders that have had the STIC upgrade package installed and on 944D Wheel Loaders, the solenoid valves and powertrain software need to be changed to avoid the possibility of premature torque converter failures and harsh shifting when the lock-up clutch is engaged.

AFFECTED PRODUCT

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Model	Identification Number
994	9YF10, 17, 47, 49, 54, 61, 62, 65, 84, 109, 127, 151, 177, 179, 182, 187, 190, 198, 205, 210, 216-219, 222, 226-227
994D	3TZ251-287

PARTS NEEDED

1 - 2165342 Modulating Valve (Torque Converter Lockup Clutch)
1 - 2172708 Modulating Valve (Torque Converter Impeller Clutch)
1 - 2242112 Powertrain Software (3TZ Only)
1 - 2246645 Powertrain Software (9YF Only)

ACTION REQUIRED

See the attached Rework Procedure.

OWNER NOTIFICATION

U.S. and Canadian owners will receive the attached Owner Notification.

SERVICE CLAIM ALLOWANCES

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Caterpillar		Dealer Suggested		Customer Suggested
Parts	Labor Hrs.	Parts	Labor Hrs.	Parts	Labor Hrs.
100%	2	0	0	0	0
NOTE: This is a 2-hour job.

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.

Attach. (1-Owner Notification)
(2-Rework Procedure)

COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - The Solenoid Valves And Powertrain Software Need To Be Changed In the Torque Converter Modulating Valves

MODELS INVOLVED - 994 and 994D Wheel Loaders

Dear Caterpillar Product Owner:

The solenoid valves and powertrain software need to be changed in the Torque Converter Modulating Valves on certain 994 and 994D Wheel Loaders. On 944 Wheel Loaders that have had the STIC upgrade package installed and on 944D Wheel Loaders, the solenoid valves and powertrain software need to be changed to avoid the possibility of premature torque converter failures and harsh shifting when the lock-up clutch is engaged. New solenoid valves and powertrain software need to be installed on the products listed below. You will not be charged for the service performed.

Contact your local Caterpillar dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service. Please refer the dealer to their Service Letter dated November 19, 2002 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 November 19, 2002 Service Letter

Rework Procedure

Replace the 1832047 Valve with 2165342 Valve. Replace the 1296303 Valve with 2172708 Valve. Flash the specific Powertrain Software into the machine, based on machine serial configuration (2242112 for 3TZ machines and 2246645 for 9YF machines). After installation of new Valves and Software, the Impeller Clutch must be recalibrated.

Illustration 1? Location of Valves