ELBOW-EXH 1C4193 - Caterpillar

Start By:a. remove differentials and pinion assemblies. Fluid Spillage ContainmentCare must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to "Tools And Shop Products Guide", NENG2500 for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates. The disassembly procedure is the same for the front and rear pinion assemblies. 1. Remove six bolts (1) and the washers that hold retainer (2) to the pinion housing. Remove the retainer. 2. Remove lip-type seal (3) from retainer (2). 3. Bend crimp (4) away from the slot in the pinion shaft with a hammer and punch.4. Use Tool (A) to remove nut (5) from the pinion shaft. 5. Using a press, remove pinion shaft (6) from the pinion housing. 6. Remove bearing cones (8) and bearing cups (7) from the pinion housing.Assemble Pinion Assemblies (928G & IT28G)
The same assembly is used for both the front and rear pinon assemblies. Fluid Spillage ContainmentCare must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to "Tools And Shop Products Guide", NENG2500 for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates. Cup freezing or cone heating may be used if cups or cones are reset with a driver or press after parts have reached a uniform temperature. Limit cone heating to 135°C (275°F) maximum for a maximum of 4 hours. Lubricate bearings after they have cooled to prevent rusting.1. Install bearing cups (8) and (10) in pinion housing (9). The bearing cups must be seated against the shoulders in pinion housing (9).2. Install bearing cone (7) on pinion (6). Bearing cone (7) must be against (seated) the shoulder on pinion (6). Lubricate bearing cone (7).3. Install pinion (6) in housing (9). Press bearing cone (11) into place leaving a small amount of end play. Lubricate bearing cone (11). Lubricate and install the washer and nut (5).4. Position the assembly vertically in a soft jawed vise. Tighten the vise against the teeth on pinion shaft (6). Install an appropriate size bolt and nut through an outer mounting bolt hole in pinion housing (9).5. Place a 203 mm (8.0 in) torque wrench on this bolt so that it is in line with the center of pinion shaft (6).6. While turning pinion housing (9) with the torque wrench, tighten nut (5) until the torque wrench reading in the following chart is reached.
*When using a 203 mm (8.0 in) torque wrench.Check to be sure that there is zero end play of pinion shaft (6).7. If pinion rolling torque exceeds the specification, back