ALTERNATOR GP-CHARGING 3N5680 - Caterpillar

Illustration 1 g00597019
(1) Diameter of the shaft at the seat area of the carbon seal assembly ... 44.450 0.020 mm (1.7500 0.0008 inch) (2) Seal assembly
Ring and water seal
Use the 8T-3034 Water Pump Seal Driver and hand pressure in order to install the water seal and the ring together in the pump housing bore. Ensure that the polished face of the ring is toward the groove of the seal assembly.
Seal assembly.
Remove the spring from the seat.
Put clean water on the seal assembly as the only lubrication for assembly. DO NOT get any grease or oil on the seal faces.
DO NOT stretch the rubber of the seal assembly at installation. If the seal is stretched, the service life is shortened.
Use the 8T-3034 Water Pump Seal Driver and hand pressure to install the seal assembly on the pump shaft until the seal face makes light contact with the smooth face of the ring.Note: The seal assembly must rotate with the water pump shaft. DO NOT use any lubricant (except clean water) that will reduce the friction between the seal and the shaft.
Install the carbon seal assembly spring. (3) Diameter of impeller shaft ... 64.850 0.020 mm (2.5531 0.0008 inch)Bore in bearing for impeller shaft ... 65.056 0.020 mm (2.5613 0.0008 inch) (4) Install the impeller shaft bearing to the following dimension from the surface of the pump housing. ... 2.500 0.500 mm (0.0984 0.0197 inch) (5) Install the impeller shaft support bearing to the following dimension from the surface of the support. ... 2.500 0.500 mm (0.0984 0.0197 inch) (6) Thickness of plate ... 11.85 0.05 mm (0.467 0.002 inch)Width of groove in impeller shaft for the plate ... 12.00 0.05 mm (0.472 0.002 inch)End play for impeller shaft ... 0.05 0.25 mm (0.002 0.010 inch) (7) Diameter of impeller shaft at the support end ... 44.880 0.020 mm (1.7669 0.0008 inch)Bore in shaft support bearing ... 45.056 0.020 mm (1.7739 0.0008 inch)