PLUG 4V4853 - Caterpillar

(1) Torque for bolt that holds the impeller ... 39 3 N m (28 2 lb ft)(2) Shaft diameter at carbon seal assembly seat area must be ... 19.10 0.05 mm (.752 .002 in) Use 4C9500 Quick Cure Primer to clean the water pump shaft and the ceramic ring seal counterbore in the pump housing.(3) Ring and water seal.Use a 125-9622 Seal Installation Tool and hand pressure to install the rubber seal and ceramic ring as a unit in the pump housing bore. Make sure the identification mark (holes or groove) on the ceramic ring face is installed inside the rubber seal.(4) Seal assembly.a. Remove the spring from the seal.b. Put clean water on the seal assembly as the only lubrication for assembly. Do not get any grease or oil on the seal faces.c. Do not stretch the rubber seal assembly at installation. If the seal is stretched, the service life is shorted.d. Use a 135-9622 Seal Installation Tool and hand pressure to install the seal assembly on the pump shaft until the carbon face makes light contact with the smooth face of the ceramic ring. The carbon 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.e. Install the carbon seal assembly spring(5) Torque for plug ... 3.5 0.5 N m (30 5 lb ft)(6) Oil seal. Install with lip toward water pump drive gear. Press oil seal flush in counterbore using a press. No hand installation is allowed.(7) Torque for bolt that holds the gear ... 215 40 N m (160 30 lb ft)