Eaton Axle and Brake Service Manual. 2-Speed and Double ...

ASSEMBLY / ADJUSTMENTDrive AxleFinal Pinion Bearing Preload Test(cont'd)2. Measure Pinion Bearing Preload - Use aspring scale to test the assembly rollingtorque. To use the spring scale, wrap softwire around the bearing cage, attach thescale and pull. Preload is correct whentorque required to rotate the pinion bearingcage is from 15 to 35 LBS.-IN. (1.7-4.0 N.m).This specification is translated into springscale readings in the chart below.3. Adjust Pinion Bearing Preload - Ifnecessary, adjust pinion bearing preload.Disassemble the pinion bearing cage asrecommended in this manual and changethe pinion bearing spacer. A thicker spacerwill decrease preload. A thinner spacer willincrease preload.IMPORTANT: Use the correctly sizedspacer. Do not use shim stock or grindspacers. These practices can lead to loss ofbearing preload and gear or bearing failure.Install Pinion Oil Seal and Yoke1. With pinion bearing preload adjustmentcomplete, install oil seal. Use a press andproperly sized sleeve to prevent distortionor contact with seal lips during installation(see illustration).Section 32. Make sure yoke is clean and dry. Installyoke and nut (or nut and washer on somemodels). Tighten nut to correct torque (see .chart above~.NOTE: After tightening nut, recheck pinionbearing rolling torque, then proceed withpinion installation in carrier.Overhaul24