8. TURBOCHARGER 8.2 Service Standards and Tightening Torque 8.2.1 Service standards RHB31/RHB51 type Unit:
mm 82E-5 – 98E-5 SERIES 8-5 Standard dimension Wear limit RHB31 RHB51 RHB31 RHB51 Turbine shaft Turbine shaft journal outside diameter (A) 6.257 – 6.263 7.99 – 8.00 6.25 7.98 Turbine shaft seal ring groove width (E) 1.038 – 1.062 1.25 – 1.28 1.07 1.29 Compressor side seal ring groove width (G ) 1 1.02 – 1.03 1.22 – 1.23 1.04 1.31 Compressor side seal ring groove width (G ) 2 0.82 – 0.83 1.02 – 1.03 0.84 1.11 Turbine shaft run-out 0.002 0.002 0.005 0.011 Bearing Journal bearing inside diameter (C) 6.275 – 6.285 8.01 – 8.03 6.29 8.04 Journal bearing outside diameter (D) 9.940 – 9.946 12.32 – 12.33 9.93 12.31 Bearing housing inside diameter (B) 9.995 – 10.005 12.40 – 12.41 10.01 12.42 Thrust bearing Thrust bearing width (J) 3.59 – 3.61 3.99 – 4.01 3.58 3.98 Thrust bushing groove dimension (K) 3.632 – 3.642 4.04 – 4.05 3.65 4.07 Seal ring fix- ing area Turbine side (bearing housing)(F) 11.00 – 11.018 15.00 – 15.02 11.03 15.05 Compressor side (seal ring)(H ) 1 9.987 – 10.025 12.40 – 12.42 10.04 12.45 Compressor side (seal ring)(H ) 2 7.968 – 8.00 10.00 – 10.02 8.01 10.05 Rotor play in axial direction 0.022 – 0.053 0.03 – 0.06 0.07 0.09 Rotor play in radial direction 0.061 – 0.093 0.08 – 0.13 0.12 0.17