AIR COMPRESSOR GP 1668307 - Caterpillar

TECHNICAL INFORMATION BULLETIN MAY 19, 2004
WHEEL TRACTOR SCRAPERS 611 (6SZ237), 615C (9XG1607-1613), 657E (5YR505-527), 657E (6TR407-411)
OFF-HIGHWAY TRUCKS 769D (BBB94-169), 771D (BCA95-153), 773E (BDA75-181), 775E (BEC76-153), 777D (AGC907-1074), 789C (2BW535-566)
COMPONENT CODES 5457, 5458SUBJECT: SERVICE LETTER, PI10273, "PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE AIR DRYER ON CERTAIN 611, 615C, AND 657E WHEEL TRACTOR SCRAPERS; AND ON CERTAIN 769D, 771D, 773E, 775E, 777D, AND 789C OFF-HIGHWAY TRUCKS", CONTAINS INCORRECT SERIAL NUMBERS
Reference: Technical Information Bulletin, TIBU2653, "Certain Air Dryers Should be Removed From Dealer Inventory"
PROBLEM:
Service Letter, PI10273, "PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE AIR DRYER ON CERTAIN 611, 615C, AND 657E WHEEL TRACTOR SCRAPERS; AND ON CERTAIN 769D, 771D, 773E, 775E, 777D, AND 789C OFF-HIGHWAY TRUCKS" contains several incorrect serial numbers. This service letter does not apply to the 789C (2BW535-566) Off-Highway Trucks, nor to the 773E (BDA75-181) Off-Highway Truck.
SOLUTION:
Before performing PI10273, ensure that the machine uses the 2G-2159 Dryer Gp-Air, or the 184-1614 Dryer Gp-Air. You only need to replace the dryer if it is one of these part numbers and falls within the affected date code range called out in TIBU2653. If the machine uses any other air dryer it is NOT affected.
Note: All other serial numbers are being verified at this time and an update to the service letter is forthcoming.
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