GEAR 1834848 - Caterpillar

(1) Nut for impeller (See TURBOCHARGER IMPELLER INSTALLATION).
Do not bend or add stress to the shaft when the nut is loosened or tightened.
(2) Torque for the bolts that hold the backplate ... 10 1 N m (90 10 lb.in.)(3) Torque for the clamp bolts ... 14.0 1.5 N m (120 13 lb.in.) Lightly hit all around clamp with a soft faced hammer and again tighten to ... 14.0 1.5 N m (120 13 lb.in.)(4) Bore in the bearings ... 15.921 to 1.5931 mm (.6268 to .6272 in.) Diameter for the surfaces (journals) on the shaft for the bearings ... 15.875 to 15.885 mm (.6250 to .6254 in.)(5) Bore in the housing ... 24.961 to 24.973 mm (.9827 to .9832 in.) Outside diameter of the bearings ... 24.846 to 24.859 mm (.9782 to .9787 in.)(6) Clearance between the ends of the oil seal ring (when installed in its bore) ... 0.20 to 0.38 mm (.008 to .015 in.)(7) End play for the shaft ... 0.08 to 0.25 mm (.003 to .010 in.)Torque for bolts and nuts that hold the turbocharger to the exhaust manifold (put 5P3931 Anti-Seize Compound on the threads) ... 54 5 N m (40 4 lb.ft.)