TO5B

Tolerances
Part Inches Millimeters
Min. Max. Min. Max.

Compressor wheel
Bore diameter 0,3121 0,3124 7,9270 7,9350

Back plate
Piston ring bore diameter 0,6875 0,6885 17,4630 17,4880
Oil seal ring gap 0,0030 0,0080 0,0700 0,2000
Oil seal ring gap 0,0030 0,0080 0,0700 0,2000

Bearing housing
Piston ring bore diameter 0,8220 0,8240 20,8800 20,9300
Bearing bore diameter 0,9827 0,9832 24,9610 24,9730
Oil seal ring gap 0,0080 0,0150 0,2000 0,3800

Shaft and wheel
Piston ring groove width 0,0645 0,0665 1,6380 1,6890
Journal diameter 0,6250 0,6254 15,8750 15,8850
Seal hub diameter 0,7950 0,7970 20,1900 20,2400
Piston ring groove diameter 0,6880 0,6920 17,4800 17,5800
Eccentricity of small diameter 0,0000 0,0005 0,0000 0,0130

Thrusth spacer
Piston ring groove width 0,6850 0,6950 1,7400 1,7650
Diameter (I.D.) 0,3138 0,3141 7,9710 7,9780
Piston ring groove diameter 0,6040 0,6080 15,3400 15,4400
Diameter (O.D.) - Other models 0,6770 0,6780 17,2000 17,2200
Diameter (O.D.) - TO5B10 0,6715 0,6725 17,0560 17,0820
Thickness 0,5160 0,5170 13,1100 13,1300
Parallelism between faces 0,0001 0,0030

Thrusth collar
Diameter (I.D.) 0,3137 0,3141 7,9680 7.978,0000
Thickness 0,2990 0,3000 7,5900 7,6200
Parallelism between faces 0,0003 0,0080

Clearances
Part Inches Millimeters
Min. Max. Min. Max.

Rotor
Axial end play 0,0040 0,0070 0,1000 0,1800
Radial bearing clearance 0,0030 0,0070 0,0800 0,1800

Torques
Part Pounds per Inch Newtons per meter
Min. Max. Min. Max.

Bolts
turbine housing 160,0 190,0 18,1 21,5
backplate 40,0 50,0 4,5 5,7

Shaft nut
1st - Tighten to 125,0 150,0 14,1 17,0
2nd - Loosen the nut
3rd - Retorque to 15,0 25,0 1,7 2,8
4th - Plus additional turn of 130º

V clamp
compressor housing 40,0 80,0 4,5 9,0