CPI494478
Service Bulletin/Repair Instructions
Reman water pump impeller bore ID allows slippage on the water pump shaft causing early hour failures.
Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
CPI494478
Reman water pump impeller bore ID allows slippage on the water pump shaft causing early hour failures.
SEBD-9922-00
CATERPILLAR: INFORMATION REGARDING AVAILABILITY OF NEW LINER O RING SEAL THAT IMPROVES GEOMETRY FOR EASIER INSTALLATION IN CERTAIN ENGINES. MODELS C10, C11, C12, C13. NO YEARS LISTED. *PE
SEBD-9723-00
CATERPILLAR: ON CERTAIN COMMERCIAL ENGINES NEW WATER PUMPS ARE BEING USED. *PE
SL-PI-70310
CATERPILLAR: PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REWORKING OR9749, OR9750, AND 148-2144 CYLINDER HEADS IN DEALER PARTS STOCK. SOME CYLINDER HEADS WERE ASSEMBLED WITH INTAKE AND EXHAUST VALVES IN THE INCORRECT POSITION. NO MODEL YEARS LISTED. *PE
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.