PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING THE PRESSURE REDUCING VALVE ON THE PISTON PUMP FOR THE HYDRAULIC FAN ON CERTAIN 793F OFF-HIGHWAY TRUCKS
Usage:
REBE6273-00
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| 10Aug2010 |
U-313
A-242
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| Priority | PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING THE PRESSURE REDUCING VALVE ON THE PISTON PUMP FOR THE HYDRAULIC FAN ON CERTAIN 793F OFF-HIGHWAY TRUCKS |
|
| 5467 5057 | PI31784 |
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| NOTE: | This Program must be administered as soon as possible. When reporting the repair, use "PI31784" 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 "PI31784" 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 |
| 28Feb2011 | 31Aug2011 |
PROBLEM
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| A pressure reducing valve, for the piston pump for the hydraulic fan, needs to be installed on certain 793F Off-Highway Trucks. The current hydraulic fan control system, which does not contain a pressure reducing valve, can cause the fan to not operate in machine applications above 3,000 meters. |
AFFECTED PRODUCT
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| Model | Identification Number |
| 793F | SSP00114-00116, 155-156 |
PARTS NEEDED
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Qty |
Part Number | Description |
| 1 | 1S0994 | CLIP-LOOP |
| 1 | 6V1572 | CLIP-HALF SLOT |
| 1 | 6V1573 | CLIP-HALF TAB |
| 1 | 6V1875 | GROMMET |
| 1 | 6V8636 | ADAPTER-STR |
| 1 | 6V8723 | ADAPTER-ELBOW |
| 4 | 6V8724 | ADAPTER-ELBOW 90 |
| 2 | 7X2563 | BOLT |
| 2 | 8T4121 | WASHER-HARD |
| 4 | 8T4123 | WASHER-HARD |
| 2 | 8T4131 | NUT-HEX |
| 1 | 8T4133 | NUT |
| 1 | 8T4195 | BOLT |
| 2 | 9X2480 | BOLT |
| 2 | 9X8256 | WASHER |
| 5 | 2147568 | SEAL-O-RING-STOR |
| 1 | 2260835 | VALVE GP-PRESS-B |
| 6 | 2287089 | SEAL-O-RING-ORFS |
| 1 | 2385080 | SEAL-O-RING-STOR |
| 1 | 3601516 | PLATE AS |
| 1 | 3601517 | HOSE AS |
| 1 | 3601518 | HOSE AS |
| 1 | 3601519 | TUBE 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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| Please refer to Special Instruction REHS5091 "Field Installation of the Pressure Reducing Valve on the Piston Pump for the Hydraulic Fan on Certain 793F Off-Highway Trucks". |
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OWNER NOTIFICATION
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| U.S. and Canadian owners will receive the attached Owner Notification. |
SERVICE CLAIM ALLOWANCES
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| NOTE: This is a 3.0-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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| COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS XYZ Corporation 3240 Arrow Drive Anywhere, YZ 99999 PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING THE PRESSURE REDUCING VALVE ON THE PISTON PUMP FOR THE HYDRAULIC FAN ON CERTAIN 793F OFF-HIGHWAY TRUCKS MODELS INVOLVED - 793F Dear Caterpillar Product Owner: A pressure reducing valve, for the piston pump for the hydraulic fan, needs to be installed on certain 793F Off-Highway Trucks. The current hydraulic fan control system, which does not contain a pressure reducing valve, can cause the fan to not operate in machine applications above 3,000 meters. 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 10Aug2010 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 10Aug2010 Service Letter |
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