AIR/HYDRAULIC CYLINDER GROUP 3Y0666 - Caterpillar

(1) Torque for the bolts and nuts that hold the turbocharger to the exhaust manifold (put 5P3931 Anti-Seize Compound on threads) ... 270 25 N m (200 18 lb.ft.)(2) Torque for the bolts that hold the turbine housing to the cartridge housing ... 48 3 N m (35 2 lb.ft.)(3) Torque for the bolts that hold the compressor housing to the cartridge housing (put 5P3931 Anti-Seize Compound on the threads) ... 25 5 N m (18 4 lb.ft.)(4) Width of oil seal ring at compressor end ... 2.500 0.010 mm (.0984 .0004 in.) Width of oil seal ring groove at compressor end ... 2.635 0.035 mm (.1037 .0014 in.)(5) Turbocharger impeller installation: a. Put impeller on the shaft.b. Put a small amount of 2P2506 Thread Lubricant on the threads and impeller face that will be under the nut.c. Tighten the nut to ... 95 5 N m (70 4 lb.ft.)
Do not bend or add stress to the shaft when the nut is loosened or tightened.
(6) Width of oil seal ring at turbine end ... 2.500 0.010 mm (.0984 .0004 in.) Width of oil seal ring groove at turbine end ... 2.550 + 0.030 - 0.010 mm (.1004 + .0012 - .004 in.)(7) End play for the shaft ... 0.090 to 0.130 mm (.0035 to .0051 mm)(8) Bore in the bearings ... 24.020 + 0.010 - 0.0 mm (.9457 + .0004 - .00 in.) Diameter of the surfaces (journals) on the shaft ... 24.000 + 0.0 - 0.009 mm (.9449 + .00 - .0004 in.)(9) Bore in the housing ... 32.000 + 0.016 - 0.0 mm (1.2598 + .0006 - .00 in.) Outside diameter of the bearings ... 31.890 + 0.0 - 0.010 mm (1.2555 + .00 - .0004 in.)(10) Torque for the three bolts that hold the thrust bearing ... 10 2 N m (7 1 lb.ft.)