Tolerances |
| Part |
Inches |
Millimeters |
| Min. |
Max. |
Min. |
Max. |
Compressor wheel |
| Bore diameter |
0,3736 |
0,3739 |
9,4890 |
9,4970 |
Back plate |
| Piston ring bore diameter |
0,6875 |
0,9885 |
17,4630 |
17,4880 |
| Oil seal ring gap |
0,0030 |
0,0080 |
0,0700 |
0,2000 |
Bearing housing |
| Piston ring bore diameter |
1,0290 |
1,0310 |
26,1400 |
26,1900 |
| Bearing bore diameter |
0,9830 |
0,9835 |
24,9680 |
24,9810 |
| 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 ( all others ) |
0,6250 |
0,6254 |
15,8750 |
15,8850 |
| Journal diameter (T1815,78) |
0,6247 |
0,6250 |
15,8670 |
15,8750 |
| Seal hud diameter |
0,9950 |
0,9970 |
25,2700 |
25,3200 |
| Eccentricity of small diameter |
|
0,0005 |
|
0,0130 |
Thrusth spacer |
| Piston ring groove width |
0,0695 |
0,0715 |
1,7650 |
1,8160 |
| Diameter (I.D.) |
0,3754 |
0,3758 |
9,5350 |
9,5450 |
| Piston ring bore diameter |
0,6040 |
0,6080 |
15,3400 |
15,4400 |
| Diameter (O.D.) |
0,6715 |
0,6725 |
17,2470 |
17,2590 |
| Thickness |
0,4860 |
0,4870 |
12,3400 |
12,3700 |
| Parallelism between faces |
|
0,0002 |
|
0,0050 |
Thrusth collar |
| Diameter (I.D.) |
0,3755 |
0,3759 |
9,5350 |
9,5450 |
| 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 |
0,0090 |
0,1000 |
0,2300 |
| Radial bearing clearance |
0,0040 |
0,0090 |
0,1000 |
0,2300 |
Torques |
| Part |
Pounds per Inch |
Newtons per meter |
| Min. |
Max. |
Min. |
Max. |
Bolts |
| compressor housing |
100,0 |
110,0 |
11,3 |
12,4 |
| turbine housing |
100,0 |
110,0 |
11,3 |
12,4 |
| insert plate |
30,0 |
40,0 |
3,4 |
4,5 |
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 |
|
|
|
|
