PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING A NEW OIL PUMP BEARING IN THE TRANSMISSION OF CERTAIN 735 ARTICULATED TRUCKS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING A NEW OIL PUMP BEARING IN THE TRANSMISSION OF CERTAIN 735 ARTICULATED TRUCKS

Usage:

SEBE9229

June 23, 2005
U-203
O-169

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING A NEW OIL PUMP BEARING IN THE TRANSMISSION OF CERTAIN 735 ARTICULATED TRUCKS
3066		PI30817

NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI30817" 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 "PI30817" 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.

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COMPLETION DATE	TERMINATION DATE
December 31, 2005	June 30, 2006

PROBLEM

The bearing in the transmission oil and scavenge pump may fail on certain 735 Articulated Trucks because of incorrect assembly. A new bearing must be installed in the oil pump to prevent a failure.

AFFECTED PRODUCT

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Model	Identification Number
735	AWR00723-730, 733, 735, 736, 740, 742, 746, 750, 770

PARTS NEEDED

Dealers will need to order parts for this Program.

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Quantity	Part Number	Description
1	8H9789	BEARING-BALL
1	2190606	SEAL-LIP TYPE

ACTION REQUIRED

Refer to the 735 Articulated Truck Power Train Disassembly And Assembly Service Manual, RENR5138 as necessary to perform this rework.

1. Follow "Torque Converter And Transmission-Remove" to remove the transmission from the vehicle.

2. Follow "Torque Converter Housing-Remove" to separate the torque converter group from the planetary group.

3. Remove the torque converter from the housing in order to get to the transmission oil pump.

4. Remove the transmission oil and scavenge pump.

5. Follow the instructions "Transmission Oil And Scavenge Pump-Disassemble" to remove the 8H9789 Bearing from the pump shaft. Inspect the 1403666 Shaft and the 1423350 Needle Bearings for any unusual wear.

6. Use the 1P0510 Driver Group to install a new 8H9789 Bearing on the shaft

NOTE: Make sure the bearing is supported on the inner race. As an extra precaution, use as little press as possible when pressing the shaft into the bearing. Approximately 1 ton or less should be required to properly seat the shaft into the bearing. 7. Assemble the oil pump and install it on the torque converter by following the instructions "Transmission Oil And Scavenge Pump-Assemble" and "Transmission Oil And Scavenge Pump-Install".

8. Follow "Torque Converter Housing-Install" to assemble torque converter planetary. Be sure to install a new 2190606 Lip Seal before the housing is installed.

9. Follow the instructions "Torque Converter And Transmission-Install" to install the transmission into the vehicle.

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%	37	0	0	0	0
NOTE: This is a 37-hour job.
NOTE: U.S. and Canadian Dealers Only - Eligible dealers may enter a Type 2 SIMS Report.

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)

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

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999 PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING A NEW OIL PUMP BEARING IN THE TRANSMISSION OF CERTAIN 735 ARTICULATED TRUCKS MODELS INVOLVED - 735 ARTICULATED TRUCKS

Dear Caterpillar Product Owner:

The bearing in the transmission oil and scavenge pump may fail on the products listed below because of incorrect assembly. A new bearing must be installed in the oil pump to prevent a failure.

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 June 23, 2005 when scheduling this service. You will not be charged for the service performed.

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 June 23, 2005 Service Letter