TUBE AS 3450324 - Caterpillar

24. Assemble washer and pinion nut. Torque nut until it requires 1.13 N m (10 lb. in.) to rotate the pinion. Rotate pinion several times before checking pinion position. This is to seat the bearings and assure a more accurate reading pinion depth setting. Tool: In.-Lb. Torque Wrench. The reason for not assembling preload shims and new pinion seal, at this time, is due to the possibility of having to adjust pinion preload or pinion adjustment. It would be necessary to again remove the seal and, as mentioned, whenever seals are removed, they are to be replaced with new ones, due to possible damage. 29. Place arbor and discs into cross bore of carrier. Place pinion height block on button end of pinion. Set dial indicator on step of height block. Set dial indicator at zero "0". Slide scooter gage across or over arbor.Indicator will read a plus (+) or minus (-) at its highest point, depending on the etching of the pinion. Later model pinion height blocks are designed for each individual model axle. Therefore, it is possible to have a height block that does not have a step as pictured and described. Indicator reading within .05 mm (.002") of etching is considered acceptable. If pinion position is found to be within specifications continue with build up. If pinion position is not within specifications change shim pack thickness under inner bearing cup.26. Remove pinion nut, washer, end yoke, slinger, and bearing cone. Assemble preload shims (which were removed during disassembly) onto pinion. Assemble bearing cone, and slinger. 27. Apply a light coat of hypoid lubricant on the lip of pinion seal and assemble into carrier. Tools: (National) Seal Installer, (Chicago Rawhide) Seal Installer, Handle. 28. Assemble end yoke, washer, and new pinion nut. Torque nut to 325-406 N m (240-300 lb. ft.). Tools: Torque Wrench, Yoke Holder. 29. Using an in. lb. torque wrench as shown, rotate pinion. Torque to rotate pinion should read between 2.26-4.53 N m (20-40 lb. in.). To increase preload, remove shims; to decrease preload add shims. 30. The above illustration shows the arrow in the pinion pointing in two directions. The direction pointing towards the end yoke indicates that by removing pinion position shims, the distance from the centerline of the axle to pinion button is increased giving a plus reading. The preload shim pack does not effect the pinion depth setting. Arrows on the ring gear illustrate the method to increase or decrease backlash and differential bearing preload.Assembly of Differential
1. Place differential assembly (with pinion installed) into housing. Differential master bearings should still be assembled to case. 2. Set up dial indicator as shown. Be sure to locate dial indicator on same location as marked on page 17, item 10. 3. Force the differential case (ring gear) away from the pinion gear to obtain an indicator reading. Repeat until the same reading is obtained each time. This reading will be the necessary amount of shims required between the differential case and