Tightening Torque - Komatsu 4D98 Series Shop Manual

%. Turbocharger (for 4TNE106T)
8.2 Service Standards
(1) Service standards
E G,
Gz
Unit ; mm
Turbine
shaft
Turbine shaft journal outside diameter (A) 7.99 to 8.00 7.98
Turbine shaft seal ring groove width (E) 1.25 to 1.28 1.29
Compressor side seal ring groove width (G,) 1.22 to 1.23 1.31
Compessor side seal ring groove width (G,) 1.02 to 1.03 1.11
Turbine shaft runout 0.002
0.011
Bearing Journal bearing inside diameter (C) 8.01 to 8.03 8.04
Journal bearing ouside diameter (D) 12.32 to 12.33 12.31
Bearing housing inside diameter (B) 12.40 to 12.41 12.42
Thrust Thrust bearing width (J) 3.99 to 4.01 3.98
bearing Thrust bushing groove dimension (K) 4.04 to 4.05 4.07
Turbine side (bearing housing) (F) 15.00 to 15.02 15.05 Seal ring
Compressor side (seal ring) (H,) 12.40 to 12.42 12.45
fixing area
Comoressor side (seal ring) (H-1 10.00 to 10.02 10.05
Rotor play in axial direction
I
0.03 to 0.06 1 0.09 I
Rotor play in radial direction
I
0.08 to 0.13
I
0.17
I
(2) Tightening torque
1 Turbine housing set bolt M8 285&l 0 28&l
Compressor housing set bolt M5 48k5 4.7zkO.5
Thrust bearing set screw M3 13*1 1.3LkO.l
Seal elate set screw M3 13*1 1.3kO.l
I I I
Blower impeller set nut (left-handed screw) M5 2Ok2 1 2.0k0.2
8-4