PLATE AS 4419377 - Caterpillar

Illustration 1 g01991398
(2) Ring assembly (3) Water pump seal group (1) Do not lubricate the sealing lip of the lip type seal. (4) Lubricate the bore of the O-ring seals with glycerin or an approved equivalent. (5) Lubricate the shaft with a thin film of clean engine oil before pressing the impeller onto the shaft. The end of the shaft must be flush with the face of the impeller within 0.15 mm (0.006 inch). (B) Bore of the impeller for new shaft ... 25.342 0.013 mm (0.9977 0.0005 inch) (C) Width of the groove for thrust washer ... 8.75 0.05 mm (0.344 0.002 inch) (D) Thickness of new thrust washer ... 8.5 mm (0.33 inch) (E) Clearance between the impeller and the cover ... 0.5000 0.4925 mm (0.01968 0.01939 inch) (6) Torque for the taperlock studs ... 35 5 N m (26 4 lb ft) (7) Torque for the full nuts ... 27 4 N m (239 35 lb in)Minimum leakage per minute for the lip type seal at 138 kPa (20 psi) of air pressure is less than 24 cc (1.5 cu in).Minimum leakage per minute for the water pump seal assembly at 138 kPa (20 psi) of air pressure is less than 20 cc (1.2 cu in).