3054 Engine Caterpillar

Turbocharger

Illustration 1	g00295466

(1) Put oil on the threads of the nut and put oil on the seat face.

Tighten the impeller nut to the following torque: ... 2 to 2.3 N·m (18 to 20 lb in)

Tighten the nut again to the following value: ... 110 degrees

Note: Do not bend or add stress to the shaft when the nut is tightened.

(2) Tighten the bolts, which hold the back plate, to the following torque: ... 8.5 to 10.2 N·m (75 to 90 lb in)

(3) Put 5P-3931 Anti-Seize Compound on the threads. Tighten the bolts, which hold the compressor housing to the center section, to the following torque: ... 15.3 to 18.7 N·m (12 to 14 lb ft)

(4) Put 5P-3931 Anti-Seize Compound on the threads. Tighten the bolts, which hold the turbine housing to the center section, to the following torque: ... 18.6 to 20.4 N·m (14 to 15 lb ft)

(5) Turbine wheel assembly

Minimum journal outside diameter ... 10.152 mm (.3997 inch)

Ring groove diameter (minimum) ... 14.401 mm (.5670 inch)

Ring groove width (maximum) ... 1.740 mm (.0685 inch)

Hub outside diameter (minimum) ... 17.323 mm (.6820 inch)

(6) End play for shaft

Minimum permissible end play ... .03 mm (.001 inch)

Maximum permissible end play ... .10 mm (.004 inch)

(7) Compressor wheel

Bore inside diameter (maximum) ... 6.353 mm (.2501 inch)

(8) Backplate assembly

Seal inside diameter (maximum) ... 12.713 mm (.5005 inch)

Flatness from the backplate to the mating surface of the center housing is within the following value: ... .013 mm (.0005 inch)

(9) Thrust collar

Thickness (maximum) ... 18.339 mm (0.7220 inch)

Bore inside diameter (maximum) ... 6.363 mm (.2505 inch)

Thrust bearing groove width (maximum) ... 4.440 mm (.1748 inch)

Thrust bearing groove diameter (minimum) ... 9.398 mm (.3700 inch)

Piston ring groove width (maximum) ... 1.659 mm (.0653 inch)

(10) Thrust bearing

Thickness (minimum) ... 4.359 mm (0.1716 inch)

Bore inside diameter (maximum) ... 10.922 mm (.4300 inch)

(11) Radial play (side to side movement) for shaft

Minimum permissible radial play (side to side movement) ... .08 mm (.003 inch)

Maximum permissible radial play (side to side movement) ... .15 mm (.0059 inch)

(12) Center housing

Bearing inside diameter (maximum) ... 15.806 mm (.6223 inch)

Seal inside diameter (maximum) ... 17.805 mm (.7010 inch)

Put 5P-3931 Anti-Seize Compound on the threads. Tighten the bolts, which hold the turbocharger to the manifold (not shown), to the following torque: ... 55 ± 5 N·m (40 ± 4 lb ft)

Air Inlet Heater

Illustration 2	g00298861
(1) Electrical connection (2) Fuel inlet (3) Ball valve (4) Valve holder (5) Wire coil (6) Ignition coil

Voltage ... 12 volts

Current draw ... 13.5 amperes

Tighten the air inlet heater to the inlet manifold to the following torque: ... 31 ± 8 N·m (23 ± 6 lb ft)