Engine Improvements Need To Be Performed On Certain Lexion 450, Lexion 460, And Lexion 465 Combines Caterpillar

NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI3291" as the Part Number, "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 "PI3291" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

Completion Date

Termination Date

Problem

Several improvements need to be made to the 3126 Engine in certain Lexion 450, Lexion 460, Lexion 465, Lexion 480, Lexion 485 Combines. The ATAAC needs to be replaced to lower the air inlet temperature, the water temp sender needs to be relocated to correct false readings, and the throttle control hydraulic line is being replaced with a more durable line.

Affected Product
Model & Identification Number

LEXION 450 (8YW462-466)

LEXION 460 (9FW11-520)

LEXION 465 (3HZ11-477)

Parts Needed

Dealers will need to order parts for this Program.

1 - 1739226 ATAAC KIT

1 - 1743679 TEMP SENDER

1 - 1743789 LINES KIT-HY

Action Required

Parts Stock

Remove all 154-8602 Tube As. and 154-9163 Temp Sensors from Parts Stock.

Affected Product

See the attached procedure.

Owner Notification

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

Service Claim Allowances

Parts Stock

Submit one claim for all 154-8602 Tube As. and 154-9163 Temp Sensors removed from Parts Stock.

Affected Product

NOTE: This is a 3.0-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.

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

Attach.

(1-Owner Notification)

(1-Rework Procedure)

Copy Of Owner Notification For U.S. And Canadian Owners

Rework Procedure

Lexion 450, 460, 465 Installation Instructions
Replacing The Air-to-Air Aftercooler

173-9226 ATTAAC Kit

Consisting of:

1. Remove tubes from turbo to air-to-air aftercooler (pos. A) and from air-to-air aftercooler to engine (pos. B).

2. Rotate radiator screen open and fasten in this top position. Unbolt radiator screen bracket (pos. C).

3. Unbolt bracket (pos. D) plust stop angle (pos. E). Lift oil cooler out of lower turning point and swivel to side as far as possible.

4. Remove lhs and rhs bracket (pos. F). Take aftercooler out of cooler housing.

5. Fit existing rubber mounts (pos. G) to new aftercooler 173-1269.

6. Put new aftercooler into cooler housing and fasten with new brackets 173-1270 (pos. F).

7. Reassemble machine in opposite sequence.

NOTE: When installing aftercooler make sure hoses and aftercooler are clean. Do not damage aftercooler during installation process.

174-3789 Lines Kit

Install new line and secure it exactly the same way as the removed line.

174-3679 Kit - Temp Sender

Consisting of:

1. Preassemble new temperature sender 174-3680 as well as seal ring 148-0393, adapter 154-9080 and O-Ring 154-7606.

2. Drain appr. 5 liters of radiator coolant.

3. Remove old temperature sender (pos. A). Plug threaded hole with 174-3681. NOTE: Use Teflon-tape

4. Remove plug (Pos. B) and install new temperature sender 174-3680.

5. Reconnect wire harness and secure with existing clips.

6. Refill radiator with coolant.

7. Start engine and check system for leakages.