TA51

Tolerances

Part Inches Millimeters
Min. Max. Min. Max.

Compressor wheel

Bore diameter 0,3124 7,9350

Back plate

Piston ring bore diameter 0,6890 17,5000

Bearing housing

Piston ring bore diameter 0,8220 0,8224 20,8790 20,8890
Bearing bore diameter 0,7943 0,7948 20,1750 20,1880

Shaft and wheel

Piston ring groove witdh 0,0646 0,0665 1,6400 1,6900
Journal diameter 0,5115 0,5118 12,9920 13,0000
Seal hub diameter 0,7860 19,9600
Piston ring groove diameter 0,6860 17,4750

Thrusth collar

Diameter (I.D.) 0,3128 7,9450
Thickness 0,1748 4,4400

Clearances

Part Inches Millimeters
Min. Max. Min. Max.

Rotor

Axial end play 0,0020 0,0032 0,0500 0,0800
Radial bearing clearance 0,0048 0,0065 0,1200 0,1650

Torques

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

Bolts

compressor housing 80,0 100,0 9,0 11,3
thrust bearing 22,0 2,5
backplate 80,0 9,0

Shaft nut

1st - Tighten to 32,0 42,0 3,6 4,7
2nd - Plus additional turn of 120º

V clamp

turbine housing 150,0 170,0 16,9 19,1